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Operator
Good day everyone, and welcome to MasTec's Third Quarter 2017 Earnings Conference Call, initially broadcast on November 3, 2017. Let me remind participants that today's call is being recorded.
At this time, I'd like to turn the call over to Marc Lewis, MasTec's Vice President of Investor Relations. Marc, please go ahead.
J. Marc Lewis - VP of IR
Thank you, Dana. And good morning, everyone. Welcome to MasTec's Third Quarter 2017 Earnings Conference Call. The following statement is made pursuant to the safe harbor for forward-looking statements described in the Private Securities Litigation Reform Act of 1995. In these communications, we may make certain statements that are forward-looking, such as statements regarding MasTec's future results, plans and anticipated trends in the industries where we operate. These forward-looking statements are the company's expectations on the day of the initial broadcast of this conference call, and the company does not undertake to update these expectations based on subsequent events or knowledge. Various risks, uncertainties and assumptions are detailed in our press releases and filings with the SEC. Should one or more of these risks or uncertainties materialize or should any of our underlying assumptions prove incorrect, actual results may differ significantly from results expressed or implied in today's call.
In today's remarks by management, we will be discussing adjusted financial metrics as discussed and reconciled in yesterday's press release and supporting schedules. In addition, we may use certain non-GAAP financial measures in this call. A reconciliation of any non-GAAP financial measures not reconciled in these comments to the most comparable GAAP financial measure can be found in our earnings press release, our 10-Q, our 10-K or in the Investor Relations and News sections of our website located at mastec.com.
With us today, we have Jose Maas, our CEO; and George Pita, our Executive Vice President and CFO. The format of the call will be opening remarks and announcements by Jose, followed by a financial review from George. These discussions will be followed by a Q&A period, and we expect the call to last about 60 minutes. We had another great quarter and have a lot of important things to talk about today so I'll now turn the call over to Jose so we can get going. Jose?
Jose Ramon Mas - CEO and Director
Thanks, Marc. Good morning, and welcome to MasTec's 2017 third quarter call. Today, I'll be reviewing our third quarter results as well as providing my outlook for the markets we serve.
First, some third quarter highlights. Revenue for the quarter was $1,956,000,000, an increase of 23% over last year's third quarter. Adjusted EBITDA was $180 million, adjusted earnings per share were $0.82, and cash flow from operations for the third quarter was $267 million. In summary, we had an excellent quarter. In fact, this was the best third quarter in the company's history.
More importantly, I'm very encouraged by the number and diversity of the opportunities we are currently experiencing. For example, I am pleased to announce that over the last few months, we have been awarded multiple large projects, including our previously announced large pipeline project with an expected contract value of over $1.5 billion; fiber awards with an expected contract value exceeding $1 billion; wind farm projects with expected contract values exceeding $350 million; 2 biomass projects, which represent approximately $250 million of contract value; transmission projects with one particular customer exceeding $250 million of contract value; and an electric distribution agreement with a utility that will significantly expand our electric distribution business. Again, I'm encouraged by the activity levels across all of our segments. We are seeing a number of other opportunities similar in size and scale to the ones I just mentioned, and strongly believe we will continue to see increasing level of activity and demand across all of our segments.
We expect 2018 to be another record year for MasTec, and we're very excited about the accelerating opportunities for '19 and beyond.
We also announced yesterday that we expect to end 2017 with record backlog, exceeding $6 billion with year-over-year growth across all segments.
Before I get into industry specifics, I'd like to make one last comment about our third quarter earnings. Earnings were better than expected. Our $180 million of adjusted EBITDA beat our guidance of $167 million. On the revenue side, we significantly beat expectations. It's important to understand where this came from and why we didn't get more margin flow-through. Our revenue beat was primarily associated with an increase in value and cost on one particular project that was cost reimbursable in nature. Thus, as the contract value increases, margin dollars stay relatively equal, creating margin pressure on both the job and the segment. This contract structure is somewhat unique, and we don't anticipate the similar contract structure in 2018. I'd like to note that Oil & Gas margins in the third quarter are not representative of the earnings power of our business as we have previously demonstrated.
Now I would like to cover some industry specifics. Our Communications revenue for the quarter was $611 million. Revenues in our wireline and wireless business were up, offset by a decline in home fulfillment services. The decline in fulfillment services was driven by the slowdown in our Security business, the exit of our Cellular Delivery businesses and some softness in our DIRECTV installation business.
Our Wireless business was up slightly year-over-year and sequentially. More importantly, we are more optimistic and have better visibility to the long-term investments that will be made in the coming years. We expect significant investments in Wireless Infrastructure related to the densification associated with 5G deployment. Every major carrier has publicly disclosed plans and initiatives for 5G.
We're also encouraged by the progress made by FirstNet. Currently, 28 states have opted into FirstNet. While both 5G and FirstNet will have an impact on 2018 revenues, we expect that impact to accelerate throughout the year with significant ramp in 2019. Wireline revenues for the quarter were up 20% year-over-year, and we continue to see strong demand. We continue to see an increase in nationwide fiber deployment projects from both telephone companies and cable TV operators, and I'm confident this will provide us with significant opportunities for years to come.
Backlog was up sequentially in our Communications segment driven by future fiber project growth. In fact, as I previously stated, we have now been awarded over $1 billion of fiber projects, most of which is not in our 18-month backlog, and all of which we expect to perform in the coming years. The pace of opportunities continues to grow, and we expect future awards to continue to be a driver of long-term growth for us.
Moving to our Power Generation and Industrial segment. Revenue was $97 million for the third quarter, up sequentially from $61 million in the second quarter. More importantly, we are encouraged by the operational and financial improvements we've made. We have seen significant improvements in margins, and we now expect to see considerable revenue growth in this segment over the coming years.
Backlog was up sequentially from $85 million to $331 million, and we expect backlog to grow again before year end. As I mentioned earlier, we have been awarded a number of projects in this segment, and bidding activity continues to be very strong.
Revenue in our electrical transmission business was $82 million versus $102 million in last year's third quarter. More importantly, margins were much improved, and we continue to build off of our recent momentum. While we're not satisfied with our margins in transmission, we've now had 3 consistent quarters in what we expect to be a transition year as we build backlog into the future. While backlog was down slightly sequentially, we are in the midst of a very active bidding cycle. We have a significant number of opportunities and feel we are well positioned to grow backlog and get back to, or exceed, historical revenue levels.
Our Oil & Gas pipeline segment had revenues of $1,161,000,000 for the third quarter compared to revenues of $736 million in last year's third quarter. Our Oil & Gas segment had another solid quarter but as I mentioned earlier, margins were impacted by cost reimbursable work.
Looking into 2018, we are excited about our recent announced award as well as a number of other smaller projects we have been awarded. We expect to finish 2017 with backlog levels exceeding 2016.
It's important to remember that going into 2017, our revenue expectation for Oil & Gas was roughly $2.5 billion. We now expect to generate nearly $3.3 billion in segment revenues in 2017. As we look into 2018, we again expect to generate over $3 billion in segment revenues.
Our pipeline business is being driven by the level of demands in domestic U.S. work. Our Canadian business has continued to struggle as we've faced challenges in growing revenues. We are, however, now seeing a considerable increase in the level of active bids and RFPs. While not yet certain this will have a material impact in 2018, we believe we will see significant growth in years to come in Canada. We also remain bullish about opportunities in Mexico. While commodity prices have had a significant impact in the project development time cycle, the long-term needs remain, and we view this as an attractive market in the coming years.
To recap, we're having an excellent year. We increased 2017 revenue guidance to $6.3 billion, 2017 adjusted EBITDA to $630 million and adjusted EPS to $2.80, all record levels. To compare, we started the year with revenue guidance of $5.5 billion and $550 million of adjusted EBITDA. We have now increased revenue guidance by $800 million and adjusted EBITDA by $80 million during calendar year 2017. More importantly, we're optimistic 2018 will be even better.
I'd like to take this opportunity to thank the men and women of MasTec for their commitment to safety, their hard work and their sacrifices. Our people are our most important asset, and it's because of their performance that we can produce the numbers like the ones we've talked about today.
I will now turn the call over to George for our financial review. George?
George L. Pita - CFO and EVP
Thanks, Jose, and good morning, everyone. Today, I'll cover the third quarter financial results, including cash flow, liquidity and capital structure, as well as our updated and increased full year 2017 guidance expectations. As Marc indicated at the beginning of the call, our discussion of financial results and guidance will include non-GAAP adjusted earnings and adjusted EBITDA. Reconciliation and details of all non-GAAP measures can be found in our press release, on our website and in our SEC filings.
Here are some summary comments regarding third quarter 2017 performance, which by virtually all financial measures represented the best quarterly performance in MasTec history. Third quarter revenue grew 23% to a record $1.96 billion. Revenue growth over both last year's level and our quarterly expectation was driven by increased large Oil & Gas project activity.
Third quarter 2017 GAAP net income was $64.2 million or $0.77 per diluted share, with both metrics representing record third quarter performance levels. These numbers compare with $56.5 million and $0.69, respectively, last year.
Third quarter 2017 adjusted EBITDA was approximately $180 million. This level compares to $165 million for the third quarter of 2016, representing a 9% increase. On a rate basis, third quarter 2017 adjusted EBITDA was 9.2% of revenue.
Third quarter 2017 adjusted diluted earnings were $0.82 per share compared to adjusted diluted earnings of $0.81 per share for the third quarter of 2016. We had strong cash flow performance, generating $267 million in cash flow from operations during the 2017 third quarter despite the working capital requirements associated with record levels of third quarter revenue. Our liquidity and capital structure are in excellent shape as we end 2017.
In summary, we had strong third quarter 2017 revenue, earnings and cash flow performance, and are increasing our full year guidance expectations to new record levels with annual 2017 revenue now expected at $6.3 billion, adjusted EBITDA at $630 million and adjusted diluted earnings at $2.80 per share.
Now I will cover some segment detail regarding third quarter 2017 results. Oil & Gas segment revenue increased approximately $425 million or 58% compared to the same period last year to approximately $1.16 billion. This level was higher than our quarterly expectation due to increased large project activity.
Third quarter 2017 Oil & Gas segment adjusted EBITDA margin was 9.3% of revenue compared to 16% of revenue in the same period of the prior year. During the third quarter of 2017, we experienced increased project activity on a large project that was primarily on a cost reimbursable basis, and this reduced our adjusted EBITDA margin rate performance. As expected, Communications segment revenue was $611 million, slightly below last year's level of $624 million.
Third quarter 2017 Communications segment adjusted EBITDA margin was 10.7% of revenue compared to 10.1% last year. On a sequential basis, adjusted EBITDA margin improved 60 basis points when compared to the second quarter of 2017, and this performance is consistent with our previously indicated expectation that Communications segment margin performance would improve during the second half of 2017 and approximate last year's second half levels.
Electrical transmission segment results again improved sequentially with third quarter 2017 adjusted EBITDA at approximately $5 million or 5.5% of revenue. On a year-to-date basis, electrical transmission segment results have improved $47 million when compared to last year. Year-to-date improvement aside, we continue to see 2017 as a transitional year for this segment, with expected improvement in end-market large project opportunities in 2018 and beyond.
Third quarter 2017 power generation and industrial segment revenue was $97 million compared with $124 million last year. Adjusted EBITDA was approximately $9 million or 9.6% of revenue compared with 4.9% last year. Once again, the group had strong project performance and execution during the quarter. We are excited to report a $250 million increase in sequential backlog in this segment and have also secured additional project awards during the fourth quarter, giving us confidence in sizable 2018 growth in this segment.
In our other segment during the third quarter of 2017, we recorded approximately $7 million in earnings related to the proportionate equity ownership in the 2 Waha pipelines which are now both in service and generating income. This income is included in the equity and earnings of unconsolidated affiliates line item on our income statement. On a go-forward basis, we anticipate that this equity investment will generate approximately $20 million in annual income.
To summarize, we had strong third quarter 2017 performance and have increased our annual 2017 guidance expectation to yet another new record level. Our top 10 largest customers for the third quarter as a percentage of revenue were: energy transfer affiliates was 49%, reflecting the record level of third quarter Oil & Gas project activity on multiple projects; AT&T revenue derived from wireless and wireline services was approximately 13%; and install-to-home services were approximately 8%. On a combined basis, these 3 separate service offerings totaled approximately 21% of our total revenue. And it is important to note that these offerings, while falling under the AT&T corporate umbrella, are managed and budgeted independently within that organization, giving us diversification within that corporate universe.
Enterprise products partners was 3%, NextEra Energy, Duke Energy and Comcast were each at 2%, and Diamond Pipeline, Iberdrola Group, American Electric Power and Apache Corporation were each at 1%.
Individual construction projects comprised approximately 68% of our third quarter 2017 revenue, with the master service agreements comprising 32%, and this mix reflects the current level of large Oil & Gas project activity.
We ended the quarter with backlog at approximately $5 billion compared to $4.7 billion in the same period last year. As expected, total backlog was sequentially lower due to the burn off of large Oil & Gas project activity. And as we have said for years, it's important to consider that quarterly backlog amounts tend to be lumpy as large contracts burn off each quarter and new large contract awards only come into backlog at a single point in time.
Continuing the theme of large project award timing, we announced last month that we were awarded a $1.5 billion large Oil & Gas project, which will be reflected in our backlog at year-end, and we remain highly confident that our year-end 2017 Oil & Gas segment backlog will exceed our year-end 2016 level. As we've indicated repeatedly, we believe we are in the midst of a multiyear cycle of long-haul project activity in the U.S. that will drive significant demand for our future Oil & Gas services for several years. And as a testament to that thesis, our expected 2017 year-end backlog will mark the third consecutive year with Oil & Gas segment backlog exceeding $2 billion.
Backlog highlights during the 2017 third quarter include sequential increases in our Power Generation and Communications segments. In our Communications segment, in recent quarters, we have secured over $1 billion in awards in the fiber deployment area with less than half of this amount currently reflected in our 2017 third quarter backlog as project activity will continue to ramp beyond our current 18-month backlog amount.
Lastly, as we indicated in our release yesterday, we have experienced significant project award activity during the 2017 fourth quarter across multiple segments and anticipate that our 2017 year-end backlog will grow by over $1 billion from the current third quarter 2017 level to a new record level exceeding $6 billion, with expected year-over-year backlog growth across all of our segments.
Regarding other income -- other areas of the income statement below the EBITDA line, third quarter 2017 depreciation and amortization expense was approximately $50 million or 2.6% of revenue compared to 2.7% of revenue for the same period last year with the decrease primarily due to higher revenue levels.
Interest expense for the third quarter of 2017 was $17.6 million or 0.9% of revenue compared to 0.8% of revenue for the same period last year. This level was slightly higher than last year due to interest rate increases and working capital usage related to financing our record level of third quarter revenue.
Now I will cover our cash flow, liquidity and capital structure. As we have previously noted, our long-term capital structure is solid, with low interest rates and no significant near-term maturities, and we have an excellent and supportive bank group. As we enter the third quarter -- we exit the third quarter with ample liquidity defined as cash plus availability under our senior secured credit facility of approximately $650 million.
During the third quarter, we sequentially decreased our net debt, defined as total debt less cash, by $136 million or approximately 10% with our third quarter 2017 accounts receivable days sales outstanding or DSOs, in excellent shape at 67 days. We achieved these levels despite the working capital requirements associated with record levels of third quarter 2017 revenue, including a $58 million sequential increase in change orders related to a large Oil & Gas project activity, which we expect to resolve in the ordinary course of business during our fourth quarter.
As a reminder, consistent with our previous views, quarterly DSOs typically fluctuate based on project timing and retainage payments, and our DSO target range remains in the mid- to high 70s.
Our third quarter 2017 book leverage ratio, defined as net debt levels divided by trailing 12-month adjusted EBITDA, was 1.8x, affording us sizable financial flexibility. We anticipate a fourth quarter 2017 net debt reduction similar to the amount experienced during the third quarter, and expect that our year end 2017 book leverage ratio will remain at under 2x.
Regarding our outlook for full year 2017 spending on capital equipment, we continued to anticipate cash CapEx, defined as CapEx net of asset disposals, to approximate $90 million, and $155 million of equipment procured under capital leases. This 2017 CapEx levels reflects our confidence based on our visibility of a continued multi-year cycle of large Oil & Gas project activity.
With regard to our full year 2017 guidance expectation, we're increasing our annual revenue expectation by $300 million to $6.3 billion. We are also increasing our annual adjusted EBITDA expectation by $10 million to $630 million or 10% of annual revenue, and our expectation of adjusted diluted earnings per share by $0.07 to $2.80.
We currently, estimate that 2017 annual interest expense will approximate $61 million or 1% of annual revenue and that depreciation and amortization expense will approximate $188 million or 3% of annual revenue. We currently estimate that our annual 2017 net income attributable to noncontrolling interest will approximate $1.5 million.
We anticipate our full year 2017 GAAP income tax rate will approximate 40%, and our full year 2017 adjusted income tax rate will approximate 39%, with this difference due to the estimated tax effect of all adjusted items, including the impact of share-based compensation. This expectation does not reflect any potential actions that may be taken by the U.S. government related to potential tax reform.
Based on our initial review of yesterday's House tax reform bill proposal, we believe we would generate significant incremental cash flow, net income and earnings per share benefits if this bill were enacted.
Lastly, our share count for diluted earnings is about 82.5 million shares for the fourth quarter and 82.3 million shares for the annual 2017 period. And this guidance expectation assumes no 2017 share repurchase activity.
Turning to fourth quarter 2017 guidance. We currently estimate that fourth quarter 2017 revenue will approximate $1.3 billion. Fourth quarter adjusted EBITDA is estimated to approximate $113 million or 8.7% of revenue. Lastly, adjusted diluted earnings per share is estimated to approximate $0.36 per share. Fourth quarter guidance incorporates the normal fourth quarter seasonality trends, which due to the combination of winter weather and holidays tends to reduce revenue levels and productivity.
In summary, we are proud of our third quarter 2017 results and pleased to increase our full year 2017 guidance expectation to yet another record level. We have strong and visible opportunities across our end markets that support optimism for multiple years, and our capital structure is in excellent shape, leaving us well positioned to take advantage of the various opportunities our markets afford us.
This concludes our prepared remarks. And now, I'll turn it back to the operator for the Q&A portion.
Operator
(Operator Instructions) And we'll go first to Noelle Dilts with Stifel.
Noelle C. Dilts - VP and Analyst
It sounds like there are a lot of exciting things going on. So just starting with Oil & Gas, just given the sort of [almost mix issue] in the quarter, and that it looks like the pipeline construction industry will be approaching full capacity utilization in '18, can you just kind of give us some thoughts on what you're seeing in terms of pricing, contract structure, the overall return profile of these larger jobs that are on the horizon? And if I'm not mistaken, most of these jobs tend not to be cost reimbursable. So could you also perhaps touch on how to think about the margin profile of this new $1.5 billion job relative to Rover?
Jose Ramon Mas - CEO and Director
Sure. We've been talking a long time about what we've been seeing in the industry, the improvements that we've seen both from a contract structure perspective and a pricing perspective that I think we've seen now for well over a year. Obviously, the market's very healthy. I think that's been demonstrated in our results over the course of the last few quarters, especially in our Oil & Gas business. Again, I think when you look at the third quarter for us, it's somewhat of an anomaly. We had one particular issue where we had one contract in particular. A lot of cost reimbursable work brought down our margins. Again, we don't think that, that sticks. So as we exit that job and move on to our next slew of projects, we expect to get back to what we would consider a more normalized margin base in our Oil & Gas business. If you back out kind of that reimbursable work for the quarter, we were probably in that mid-12% margin range, maybe a little bit closer to 13%, and that's kind of the guidance that we've given around our business over the last year or so without any favorable closeouts. We think that's the right margin to think about and then the margin can get better relative to how projects perform and how projects close out.
Noelle C. Dilts - VP and Analyst
Got it. And then on the telecom side, obviously, really impressive award activity particularly on wireline. Can you help us with how to think about the timing of construction activity both in wireless and wireline in '18? Is this going to be more of a back half weighted year? Could we see a strong ramp earlier? And then also how -- does the backlog or the recent awards include any work on FirstNet?
Jose Ramon Mas - CEO and Director
Yes. So it's incredibly exciting. We've -- I don't ever remember seeing the kind of activity levels that we're seeing today across that entire sector. We do think that the business will ramp, so it's not -- we don't get out of the gates in '18 at a full level. A lot of these awards have happened recently and by the way are still happening so there is still a lot of opportunity for further growth. So as I think about the Wireline business in particular, I think it ramps as 2018 goes. I do think it's heavier in the back end than it is in the first half. And then I think it really starts to peak during '19 and '20, it's got tremendous legs and I think it's going to be an incredible run for a long time. On the wireless side, I think it's somewhat similar. When you think about 5G, a lot of the 5G plans are still being somewhat implemented. I do think we'll see activity associated with both 5G and FirstNet in 2018. But at the same time, I also think it will be heavier in the back end of the year and then much stronger in '19 than it will be in '18, just on how that business is progressing and the plans are being laid out.
Operator
And we'll take our next question from Matt Duncan with Stephens.
Charles Matthew Duncan - MD
So Jose, you ran through a number of large wins in your prepared comments. I'm just curious of all the stuff that you ran through, what in backlog and what's not so far?
Jose Ramon Mas - CEO and Director
So I would say that most of it is not in backlog and some of it -- part of the anomaly that we have is rerun an 18-month backlog. So as we talk about our backlog, it's only 18 months. A number of those projects that we talked about there, some will go beyond 18 months, like the fiber awards, so we're only going to include in backlog the 18 months on a go-forward basis. So all of it will not enter backlog at the same time. But with the exception of some fiber awards that we already had in backlog, not all but some, and a little bit on the transmission side, pretty much everything else is not in backlog as of the end of the third quarter.
Charles Matthew Duncan - MD
Okay. So is it fair to say that when you say $6 billion-plus in backlog at year-end, I mean, it feels like given where 3Q backlog levels were and the larger award in Oil & Gas, that's pointing me to a number more like $6.5 million, is that a reasonable number, sort of where you think you're going to be with the wins that you've had here in the fourth quarter?
Jose Ramon Mas - CEO and Director
It's going to depend on how much we view being performed in the next 18 months. I think it's -- it'll definitely be above $6 million, I think it could be approaching $6.5 million, depending on where it ends up around how much of that activity actually happens over the next 18 months, and that's probably why we didn't give a more specific number.
Charles Matthew Duncan - MD
Okay. And the last thing, can you give us a little perspective on the $1.5 billion Oil & Gas project that you did win? Is there anything you can say about the timing of that project, maybe relative to Rover as we look at '18? Is the timing of that project similar to what you had on Rover? Is that just an '18 project? Could it carry into '19? Just anything else you can tell us to help there would be great.
Jose Ramon Mas - CEO and Director
It would be very similar. So Rover is predominately a 2017 project. We would expect that project to be predominantly an '18 project. We'll probably have some spillover into '18 early on, on Rover, especially on cleanup and things like that, and we would expect the same thing on our 2018 project.
Operator
And we'll take our next question from Tahira Afzal with KeyBanc Capital Markets.
Tahira Afzal - MD, Associate Director of Equity Research, and Equity Research Analyst
So Jose, when I look back to the whole 4G buildout, you saw for 4 years and a compounded annual growth rate basis, 20% type of growth rates. When you say this is -- if you look at the fiber and the 5G side, is that the kind of rates you could potentially see into 2019 plus?
Jose Ramon Mas - CEO and Director
Yes.
Tahira Afzal - MD, Associate Director of Equity Research, and Equity Research Analyst
Okay. That is great and clear.
Jose Ramon Mas - CEO and Director
I don't think we see it in '18 because I think, again, a lot of it is really ramping in '18, but we definitely see growth in '18. I would expect our Communications business to grow close to double digits next year. And you're taking the impact of -- we do see some slowdown in the installation side of that business. So all in, it should be a very strong growth year. And I think that growth significantly accelerates in 2019 and beyond.
Tahira Afzal - MD, Associate Director of Equity Research, and Equity Research Analyst
Got it. Okay? And Jose, based on the backlog guidance you provided for this year, you'll be ending with your backlog up in the double digit. How should we think about the top line? Does it all extrapolate into something similar? Or should we just be a little more conservative in how we build out the top line into 2018?
Jose Ramon Mas - CEO and Director
The way we're think about it now is we're probably going to be a little bit more conservative. We look at our pipeline business and again, we came into this year thinking we'd do about $2.5 billion. We're going to end up doing $3.3 billion. Again, some of that, we would -- some of that we consider pass-through. So I think our revenue levels on pipeline are somewhat accelerated this year, and as we think about 2018, we know we can do over $3 billion. Whether we can beat the $3.3 billion, time will tell. So I think we're not going to see significant growth in that business so it's kind of tempers the overall growth of the company for 2018, although everything else is growing nicely. So I think we're going to be up somewhere in that mid-single digits probably, is if we we're taking conservative view today of next year is probably what we would be thinking.
Operator
And we'll take our next question from Alex Rygiel with B. Riley FBR.
Alexander John Rygiel - Director of Research
First, could you address the backlog that you see inside the FERC, and how you think some of these projects could proceed through approvals?
Jose Ramon Mas - CEO and Director
We've said for a long time, we're not very concerned. We knew that ultimately, FERC would appoint its new members. I think now FERC has full quorum. So as of yesterday, FERC is now completely active. We think it's a favorable FERC environment, and we think that projects will make it out, which is going to create an enormous amount of activity over the next few years.
Alexander John Rygiel - Director of Research
And then secondly, great cash generation in the third quarter. Can you provide us a little bit of guidance on cash generation in the fourth quarter? And then tie that in with your comments about share repurchased interest at this level? Obviously, you've got a buyback of about $100 million in place, is it time to expand that and get more aggressive?
George L. Pita - CFO and EVP
Alex, it's George. In terms of fourth quarter view, we indicate that we thought we'd reduce debt levels at a similar rate that we did in the third quarter. We reduced our debt in the third quarter by $130-plus million -- close to $140 million, so we'll see some kind of -- we'll see a similar debt reduction in the fourth quarter. That puts us significant sizable growth in cash flow from operations over the years, should be in the $350 million range, and that's going to have the normal seasonality you have in the fourth quarter with lower revenue, and then retainage payments and all that stuff built in.
Jose Ramon Mas - CEO and Director
So Alex, I'll address the share repurchase. When we think about 2017, we knew we would have a significant growth during the year. We knew that, that would affect working capital, which it did earlier in the year. I think we saw a big turnaround of that in the third quarter, and we expect it to continue. We're obviously disappointed with where our stock price is relative to the performance that we've had. Our stock prices has been somewhat flattish, even though we've significantly increased both revenue and EBITDA guidance over the year. So it's something we're looking a lot harder on now, and I think it'll be for interesting discussion over the coming months to see how our stock price reacts.
Operator
And we'll take our next question from Alan Fleming with Citi.
Alan Matthew Fleming - VP
Jose, you're guiding to about 10% EBITDA margin on the highest revenue that the company has seen, so I think in the past, you've talked about potentially being a 12% type EBITDA business over time. So maybe you could talk about your confidence that 10% is not the peak in EBITDA margin. And do you think that higher than 10% is a good starting point for 2018, if you can get 3 or maybe all 4 of your business lines kind of operating more towards normative levels next year?
Jose Ramon Mas - CEO and Director
Sure. A couple of things. If you look at where we started the year relative to where we thought we would be and where we are today, with the exception of pipeline, we're pretty consistent across all the other areas. We continue to believe that in those markets, we're going to see growth. We've had solid margin improvements in both our transmission and Power Gen business this year. We expect that to continue and to accelerate over time, which obviously, helps the whole margin mix and profile of the business, especially as those businesses grow. Our Communications business, we definitely think will significantly improve over the coming years. And on the pipeline side, quite frankly, for lots of reasons, right, I think margins look weaker now than what they did last year and what we expected them to be this year. And I think some of that reverse its course in 2018 as well. So we definitely don't think 10% is the peak of our margins. With where we are today going into '18, we probably wouldn't guide much differently than that, but the opportunity exists for us to do a lot better than that, and as these different businesses continue to grow and improve, it'll definitely help our mix. So again, we're really excited about where we are as a business, what the future holds for us, and our ability to continue to overperform and outperform.
Alan Matthew Fleming - VP
That's helpful. And maybe switching gears a little bit. Can you assess the future of the installation business for you? Obviously there was a lot of noise in the quarter about subscriber losses in the traditional DTV business. You guys have been in this business for quite a long time. I know it's a good cash generative business for you. But what's the future of this for MasTec? The diversification has kind of been mixed, your efforts there has been mixed. How do you think about this for some of the secular headwinds facing things like DTV?
Jose Ramon Mas - CEO and Director
Sure. I think I love the business. I think it's an excellent business. If you think about DIRECTV, in particular, we had a lot of growth from '15 to '16. A lot of that had to do with the AT&T acquisition at the time and what was happening with U-Verse customers. So from '15 to 16, revenues were up north of 20%. If you look at where we are for 2017, we're actually slightly above where we were in 2015. So as the business is kind of giving back the gains we made in '16, we're relatively flat with where we were in 2015. We do expect to see a little bit of softness in that business on a go-forward basis, but like we've said for a long time, we think we have an amazing business and an amazing business potential with the amount of fulfillment, just the number of visits we make to homes, the ability to have trucks and warehouses across the country and the value that, that brings significant amount of customer touching products. So we continue to work hard at diversification in that space. Unfortunately, some of the diversification efforts that we made, they went really well for a while and then they kind of slowed down, and a lot of it had to do with who owned the assets we were working for. But we continue to be very bullish on the ability to expand into security and what we can offer customers in doing that, and we continue to believe that there's a lot of other products we can help sell into that home and fulfill at the home, and we'll continue to do that as well. So we think we've got a good model, which obviously has grown over the years with DIRECTV and you're absolutely right in saying, we've had mixed success on diversification, but we think over time, we'll have a lot of success in diversification.
Operator
And we'll take our next session from Jamie Cook with Crédit Suisse.
Jamie Lyn Cook - MD, Sector Head of United States Capital Goods Research, and Analyst
I guess, a couple of questions, Jose. One, on the Oil & Gas business, given the strength of the awards and the bookings that you just secured, how do we think about capacity constraints or your potential like potential to book more work just given where we sit today? My second question is on the communication margins going into '18. I know you talked about some utilization issues over this past year. How do we think about margins and utilization improving in 2018 on the Communications side? And then my last question is how would you characterize the bookings potential this year in Communications versus Oil & Gas? Because I still feel like when I talk to investors, there's still -- like while you proved them wrong on Oil & Gas, they're still somewhat hesitant on your ability to really book work in '18 on the Communications side and they feel like it's more of a 2019, 2020 story?
Jose Ramon Mas - CEO and Director
Okay. So lots of questions there on the Oil & Gas side. We definitely -- we'll continue to try to book and win work throughout the year. As we said in our prepared comments, we came into the year thinking we'd be $2.5 billion in Oil & Gas revenues. We ended up doing $3.3 billion or we'll end up doing $3.3 billion. So we still have a huge component of our businesses that's book-and-burn. We'll always be there. The market on the book-and-burn side and the shale side has significantly improved throughout 2017. We don't see that shifting, so there's a lot of opportunities for us there. And what we're going to have to manage through is where are we in terms of available resources and what can we stretch and what can we do effectively. So we feel really good about that and where we sit going into 2018 in our ability to improve on that. On the Communications side, we're in 2 awesome businesses, right. One is wireless construction, which, over time, is going to -- I think it's proven itself over time. 5G is real, 5G is coming, the need for speed is there, and it's going to have a significant impact to Wireless Infrastructure build-outs throughout the country for multiple carriers. That's not necessarily a 2018 event, but I think anything you can think about in the wireless market, there's no way you can get to the point to believe that there's not going to be considerable spend on infrastructure, be it in small cells, be it in densification, be it in macros, and we're going to be a big beneficiary of that. So if you believe that wireless speeds are going to continue to improve, MasTec will benefit from that, and we'll benefit in a big way again. So I think that growth story is intact in there. On the Wireline side, I don't know how anybody can question our ability to book work. We won -- over $1 billion of fiber awards, primarily for customers that we hadn't worked for in the past, for work that's going to happen over the course of the next few years. So that -- those awards by themselves are going to create significant growth in our business versus vis-à-vis where we are today. So again, we're super excited. And again, we think we're just touching at the beginning phases of that. There's a lot of work that's going to continue to come out, and we think we'll continue to win our share, and be a big beneficiary of that. So as it relates to those 2 businesses, we're in great shape and feel great about them.
Jamie Lyn Cook - MD, Sector Head of United States Capital Goods Research, and Analyst
Sorry, the margins on the Communication side? Just utilization (inaudible).
Jose Ramon Mas - CEO and Director
Yes. So it's all going to be about ramp, right? So we know that next year, we're going to be ramping. The quicker we ramp, I think the better the margins get over time. I don't know that we would be talking about a significant improvement in margins relative to where we are today, but I do think they get better as the year goes on because that's when the ramp stars. We'll probably have some expenses as we wrap up. And then I think the business will be humming by the end of the year? And I think it will be a really strong '19.
Operator
And we'll go next to Chad Dillard with Deutsche Bank.
Chad Dillard - Research Associate
Can you speak to how your margin in the Oil & Gas backlog, and that's including the $2 billion that you won after the third quarter, compares to your margins for 2017? It sounds like you might have a higher mix of fixed-price work, and I just wanted to understand whether you could actually see some margin improvement here in '18?
Jose Ramon Mas - CEO and Director
Sure. So it depends how we look at it, right? We went into '17 very confident on the margins in our Oil & Gas business. Obviously, we had a contract structure that limited the upside on particular projects on what we could make. That doesn't really exist for 2018, so we feel like our work for 2018 is priced really well, and our ability to generate good market is going to be solid, as I said earlier. I think we've consistently said that 12% to 13% range is a really good base range to start with then it gets a lot better based on execution and project closeout. So that's how we would look at it. So if I'm thinking about 2018, I would probably start around those numbers and know that we're going to hopefully, do better than that-based and project execution over the course of the year.
Chad Dillard - Research Associate
Got it. And then just looking a year ahead in Oil & Gas, can you compare the level of bidding activity you see ahead in 2018 for pipelines that are starting construction in 2019 with the level of bidding activity that you saw in 2017 for pipeline or starting infrastructure in 2018?
Jose Ramon Mas - CEO and Director
I'd say the better, but the caveat I would throw into that is we're over a year out. And up until last year, you wouldn't even be thinking about a year out in this business. So this was again, predominantly a book-and-burn business. So I think the business has changed a lot in the last 2 years relative to the larger projects. We saw a lot of visibility without maybe knowing about a single particular project 2 years ago. We continue to see that there are a number of projects that are slated to go in '19 or '20, we feel great about it. We think we've got the ability to continue to fill in our backlog over time, and we don't see a drop-off in the business like some suggest we think. It's a very strong market, both in long haul and in the shale plays, and we continued to think that, that will play out. We also talked about on the call, which I think is really important as it relates to us, we do see significant opportunities in both Canada and Mexico, they're not '18 opportunities but as we started thinking about '19, '20 and beyond, we think those will be much bigger plays than they are today and help us to further grow that business.
Operator
And we'll go next of Brent Thielman with D.A. Davidson.
Brent Edward Thielman - Senior VP & Senior Research Analyst
Maybe on some on the other segments. Jose, the Power Gen business looks like it's going to take a big turn in the next year with the work you're picking up. What's the expectations for margin in that business? And this 9% to 10% indicative where that business should be?
Jose Ramon Mas - CEO and Director
This was obviously a good quarter. I don't know that we would probably be guiding to those levels on a go-forward basis until we can consistently do that over time. Very positive trends in the business, I think we've had those trends now consecutively for the last few quarters. We're going to see a big jump in revenues in that business, and we're really excited. We've always been a big believer in that business. The business has somewhat over performed in the last couple of years. Market is really hot right now and we're -- we feel great about where we sit in that business and our ability to get better than historical averages and margins versus where we've been over the last few years.
Brent Edward Thielman - Senior VP & Senior Research Analyst
Okay. And then this utility distribution agreement, any flavor for what that means for the segment? What kind of incremental revenue might be attached to that?
Jose Ramon Mas - CEO and Director
We're not going to give more details about it now. Big opportunity for us, we'll significantly enhance our distribution capabilities and hopefully, something that will start to ramp in 2018, and really take off in the '19, '20 time frame.
Operator
And we'll take our next question from Adam Thalhimer with Thompson Davis.
Adam Robert Thalhimer - Director of Research
Jose, the Power Gen business on the top line, similar question to the last question, 2016, you did a little over $400 million of revenue. I guess, you see the potential to get back there, maybe even higher?
Jose Ramon Mas - CEO and Director
Yes, the potential there is to get a lot higher than what it was in 2016.
Adam Robert Thalhimer - Director of Research
In '18 or further down the road?
Jose Ramon Mas - CEO and Director
Well, definitely further down the road but even potentially in '18.
Adam Robert Thalhimer - Director of Research
Got it. And then this active transmission bidding environment, when do you think that could hit backlog for the Electrical segment?
Jose Ramon Mas - CEO and Director
It's a good question. We're very hopeful that it could happen before year-end, but I think going into Q1 and Q2, there's just so much work that I think in the next 9 months, for sure, there's going to be a big change, I think everybody's backlogged in the industry. I think there's project that will happen earlier and projects that will delay a little bit, but it's a very active market right now and one that I think is going to be really, really strong for years to come.
Operator
And we'll go next to Bobby Burleson with Canaccord.
Robert Joseph Burleson - MD and Analyst
Just following up on the Electrical Transmission. Curious -- it sounds like a lot of larger projects outstanding. Curious what the margins could look like on some of these awards in 2018 and beyond.
Jose Ramon Mas - CEO and Director
We've historically said that our goal, and we think the market's there to get back to historical levels, we used to be in the low double-digit EBITDA range. We think there's no reason why we shouldn't at least, return to those levels. Whether we get there fully in '18 or not, I'm not sure. I think '18 is better. But I think obviously, it depends on the revenue ramp, and as the revenue ramp improves, the opportunity to get there gets quicker.
Robert Joseph Burleson - MD and Analyst
Okay. Great. And then just curious on wind farm projects, there's a lot more activity, it sounds like there. Curious the size of the average project that you think is coming, total revenue size for you guys in the construction side.
Jose Ramon Mas - CEO and Director
It's an interesting question and one that we're kind of seeing the change in the market. Historically, a lot of these contracts were bid on a single wind farm, by a single wind farm basis. Today, we're seeing customers put packages of wind farms together and put them out and try to sign for contracting services over a longer period of time, which I think bodes really well for companies like ours. We're also seeing a difference between, obviously, the Tier 1 developers and smaller developers who are more dependent on tax credits. We're seeing Tier 1 developers be a lot more active in the business. In many cases, not even using the available tax credits and trying to find other ways to fund it. So it's actually, the business is really solid. We see significant improvements in the size of that business and the size of the opportunities, going out over the last -- over the next few years versus the last few years. So again, a very positive trend for us.
Operator
And we'll take our final question today from Andy Wittmann with Baird.
Andrew John Wittmann - Senior Research Analyst
Given the materiality of the $1.5 billion win, I was just wondering what permitting or regulatory hurdles you have for the need to come to fruition for that project to move ahead? And when you think those will be met to get to full notice to proceed?
Jose Ramon Mas - CEO and Director
We think they've made great progress. We expect to start on that job early in 2018. Nothing's changed relative to the expectation on time frame. And I think everything is trending really well so far. So no concerns from our side.
Andrew John Wittmann - Senior Research Analyst
And then -- okay. And then on the pipeline job and the reimbursable portion. I guess, I wanted to kind of just understand a little bit more about the terms and conditions that are in marketplace. Was this entire job reimbursable, or was there a portion of it that was applicable to be reimbursable? And what does it say? You said it was unusual, but are you seeing a broader trend towards reimbursable pipeline construction?
Jose Ramon Mas - CEO and Director
So I'd say, it was a unique situation. I would say that it was a portion of it, more so than not, that fell under this category. And again, I think it was a very unique structure based on the time of the award, the relationship with that customer, the expectations that, that customer had and the need that they had at the time and our willingness to do it. So at the end of the day, quite frankly, it's an excellent deal for us, despite having some revenue that flows through without a lot of margin. The overall deal is an excellent deal for us, and we do it again if we had the chance to do it again with customers. Again, it's unique so it's not something that we typically do or see. We don't have it in any of the projects that we've got going on in 2018 at this point, but something we would happily entertain with customers in the future.
Andrew John Wittmann - Senior Research Analyst
Yes, that makes sense. A final question is just in the biomass plant that you talked about at the outset of the call here. I was just hoping if you could give a little bit more sense about what the risk terms are in that one specifically. Is that one a full EPC? Or are you a sub? Are you prime on that one? Get some conversation on that, because we haven't seen you guys do a lot of biomass, maybe I'm wrong and that, but I don't...
Jose Ramon Mas - CEO and Director
Yes. We've done some historically and we've done -- we've also done some gas power generation with success. So we've got a nice offering in that. Obviously, we've been working hard and it was part of our diversification efforts in our Power Gen business over a long period of time. This is a project we've been working on for a while. We think the risk profile of this project is really good, it's -- I think we're taken -- this is not a full fix price EPC, so I think the risk that we're taking is very moderate based on the returns. And again, we're excited to work on it, excited to add it to our resume and hopefully, we'll demonstrate solid performance on that job throughout the following year.
Operator
And at this time, I'd like to turn things back to Jose Mas for any additional or closing remarks.
Jose Ramon Mas - CEO and Director
Just like to thank everybody for participating today on our third quarter call, and we look forward to updating you on our year-end call in a couple of months. Thank you.
Operator
Thank you. And that does conclude today's conference. Thank you for your participation. You may now disconnect.