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Posted inLocal News

Solano County supervisors advance taxes on wind, gas, solar and battery projects

by Griffin Jones, Bay City News June 10, 2026June 10, 2026

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Wind turbines generate electricity in the hills of southern Solano County near Rio Vista Junction on July 21, 2024. The county has 421 commercial turbines. Voters on Nov. 3, 2026, rejected Measure E, which would have imposed new taxes on wind energy production, battery energy storage systems, and data centers. (Glenn Gehlke/Local News Matters)

Solano County is a lure for the energy sector. The county’s windswept hills are dotted with 421 commercial wind turbines, 63 natural gas wells, a handful of solar projects, and at least one proposed battery energy storage system, or BESS.

On Tuesday, Solano supervisors voted unanimously to catch up to the rapidly growing industry by advancing a measure to increase taxes on commercial wind energy and place new taxes on natural gas, solar and BESS companies, helping out with the county’s financial hardships in the process.

“Those entities come to our county and pillage our resources,” said District 5 Supervisor Mitch Mashburn after a presentation on the taxes from Solano County’s Department of Resource Management staffers.

“The ability to create a tax that does not impact families and those communities, that does impact those entities coming to our county to pillage our county’s resources for the betterment of their residents — I’m totally into that.”

A vintage streetcar waits near a wind farm in Southern Solano County near Birds Landing on July 24, 2024. The county has 421 commercial turbines. County supervisors are considering a tax measure that could bring an additional $300,000 annually to the general fund.(Glenn Gehlke/Local News Matters)

Funds from the measure could bring up to $300,000 in additional revenue to the county’s general fund. Supervisors have until Aug. 4 to vote on placing the measure on the November ballot for all Solano County voters.

Broken down: Taxes for BESS would be $1 per megawatt-hour of battery storage each month. The natural gas tax would be 25¢ per 1,000 cubic feet — with 63 wells active, that could pull in $150,509 each year. And, the proposed increase for wind energy would bring the taxes from $0.00003 to $0.00007 per kilowatt-hour, which could amount to $313.12 in county revenue per turbine each year.

Catching up after 30 years

Taxes on wind turbines haven’t gone up since 1994. For the past 30-plus years, the county has lost out on hundreds of thousands in potential revenue. The increase accounts for those 30 years of inflation.

More than 100 turbines operated by Sacramento Municipal Utilities District (SMUD) aren’t taxable by the county — a contentious topic, considering years of litigation between SMUD and Solano County.

“All those turbines out there that we aren’t allowed to tax that supply electricity for the Sacramento region, and our residents get no benefit — at a time when we have programs and citizens who are incredibly impacted … that low to middle-income group that are taxed into oblivion.

“Data centers, they’re looking to come our way. We need to be prepared if data centers come. They need to know this is how much its going to cost.”
Supervisor Wanda Williams

For Mashburn, the measure didn’t go far enough in taxing energy companies.

“Y’all brought this modest amount here? I don’t want modest,” he said, ultimately voting to move the staff’s presentation into a formal proposal.

District 3 Supervisor Wanda Williams brought up the need to consider data centers eyeing property in Solano County.

“Data centers, they’re looking to come our way,” said Williams. “We need to be prepared if data centers come. They need to know this is how much its going to cost.”

Williams approved the staff’s next step to draft the tax proposal, but added a recommendation to include data centers in the plan.

Solano County supervisors will review the proposal at their June 23 meeting.

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Tagged: battery energy storage systems, BESS, data centers, energy policy, Featured, Featured News, government, Mitch Mashburn, natural gas, renewable energy, Sacramento Municipal Utility District, SMUD, Solano County, Solano County Board of Supervisors, solar energy, taxes, Wanda Williams, wind energy
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