Exhibit 99.1

TerraForm Power Reports Third Quarter 2017 Results

BETHESDA, Md., Nov. 9, 2017 (GLOBENEWSWIRE) -- TerraForm Power, Inc. (Nasdaq: TERP) (“
TerraForm Power”) today reported financial results for the three months ended September 30, 2017.

“We are very excited about the prospects for TerraForm Power,” said John Stinebaugh, CEO of TerraForm Power. “With our high-quality fleet of solar and wind assets and the support of our sponsor, we are confident that we can deliver an attractive total return to our shareholders comprised of a dividend backed by the stable cash flow from our assets and growth that is sustainable over the long term.”

Q3 2017 Results

3Q 2017
3Q 2016
YTD 2017
YTD 2016
Generation (GWh) 1
Net Loss ($M)
per Share 2
CAFD ($M) 1
per Share 2
1 Adjusted for sale of our UK and Residential portfolios. See discussion regarding use of non-GAAP measures at the end of this press release
2 Calculated on a fully diluted basis

Financial Results and Operations

During the third quarter, our portfolio performed slightly below expectations, delivering adjusted EBITDA and CAFD of $109 million and $25 million, respectively. This represents a decrease of $10 million and $9 million, respectively, compared to the same period last year when we delivered adjusted EBITDA and CAFD of $119 million and $34 million, respectively. The decrease was largely due to unusually weak wind resource, which was ~20% below average for the quarter, resulting in a 13% decrease in total generation compared to the prior year. Wind resource was particularly low at our Hawaii projects, which have a higher than average contract price. Solar resource was also ~5% below normal levels. During the quarter, our fleet availability of 96% continued to show improvement and has further room to increase as we complete the transition to stand alone operations.
After quarter end, we signed an EPC contract to upgrade the batteries at one of our Hawaii wind projects where we are replacing lead acid batteries with lithium ion batteries. Due to lower maintenance expense associated with these new batteries, we expect to earn ~20% unlevered return on the investment of $11 million. In addition, we believe there may be opportunities in the future to expand our battery farm in order to provide further ancillary services for the local utility.
During the quarter, we revised our definition of CAFD to adjusted EBITDA minus cash distributions to non-controlling interest, annualized interest and project-level amortization payments and average annualized long-term sustaining capital expenditures required to maintain reliability and efficiency of our assets, plus any operating items that are representative of our core business operations. We revised our definition as we believe it provides a more meaningful measure for investors to evaluate our financial and operating performance and ability to pay dividends.   We encourage you to review the discussion regarding the use of non-GAAP measures at the end of this press release for more detail.
TerraForm Power’s Value Proposition
Our goal is to deliver a total return of approximately 12% to shareholders that is sustainable over the long term. We expect this total return will be comprised of an attractive dividend yield, supported by a payout ratio of 80-85% of CAFD, plus dividend per share growth of 5-8%. Over the next five years, we see multiple paths to achieving this growth plan and delivering compelling returns to our investors.
Margin Enhancements


The following information was filed by Terraform Power, Inc. (TERP) on Thursday, November 9, 2017 as an 8K 2.02 statement, which is an earnings press release pertaining to results of operations and financial condition. It may be helpful to assess the quality of management by comparing the information in the press release to the information in the accompanying 10-Q Quarterly Report statement of earnings and operation as management may choose to highlight particular information in the press release.

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