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Houston solar energy company names new C-level leadership

Eric Williams has been appointed executive vice president and CFO of Sunnova. Photo via sunnova.com/

Houston’s Sunnova Energy has named a new member to its C suite.

Eric Williams has been appointed executive vice president and CFO of Sunnova, an industry-leading adaptive energy services company. He brings 20 years of experience with 13 years in the energy industry to the company.

Williams replaces Robert Lane. Lane served as Sunnova's executive vice president and CFO from May 2019 to June 2024.

“I was drawn to Sunnova by its commitment to power energy independence and make clean energy more accessible, reliable, and affordable for homeowners and businesses,” Williams says in a news release. “Building on its unique accomplishments and strong history as an industry leader, I am confident in Sunnova’s ability to create value for all stakeholders and realize its vision for a clean energy future.

"I also count it a privilege to succeed Rob Lane, whose leadership and contributions have been invaluable," he continues. "I am grateful for his help ensuring a seamless and effective transition, and I am eager to begin working with his talented team.”

Prior to taking this position, Williams served as CEO and executive vice president of Diversified Energy Company where he helped establish the company’s asset backed securitization structure and led the issuance of approximately $2 billion in securitized debt.

"Eric’s extensive background in the energy sector and impressive track record in finance and accounting will be invaluable to Sunnova, and we are confident he will be a key driver in our growth and success going forward," William J. (John) Berger, CEO at Sunnova adds. "As a seasoned financial leader with deep experience in leveraging the capital markets, we believe Eric is uniquely positioned to continue building Sunnova’s strong financial framework and create more long-term value for our shareholders.”

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A View From HETI

A new report from the U.S. Energy Information Administration shows that wind and solar supplied more than 30 percent of ERCOT’s electricity in the first nine months of 2025. Photo via Unsplash.

Since 2023, wind and solar power have been the fastest-growing sources of electricity for the Electric Reliability Council of Texas (ERCOT) and increasingly are meeting stepped-up demand, according to a new report from the U.S. Energy Information Administration (EIA).

The report says utility-scale solar generated 50 percent more electricity for ERCOT in the first nine months this year compared with the same period in 2024. Meanwhile, electricity generated by wind power rose 4 percent in the first nine months of this year versus the same period in 2024.

Together, wind and solar supplied 36 percent of ERCOT’s electricity in the first nine months of 2025.

Heavier reliance on wind and solar power comes amid greater demand for ERCOT electricity. In the first nine months of 2025, ERCOT recorded the fastest growth in electricity demand (5 percent) among U.S. power grids compared with the same period last year, according to the report.

“ERCOT’s electricity demand is forecast to grow faster than that of any other grid operator in the United States through at least 2026,” the report says.

EIA forecasts demand for ERCOT electricity will climb 14 percent in the first nine months of 2026 compared with the same period this year. This anticipated jump coincides with a number of large data centers and cryptocurrency mining facilities coming online next year.

The ERCOT grid covers about 90 percent of Texas’ electrical load.

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