The Data Center Divide
A policy snapshot ahead of the 2026 midterms. Mapping data center incentives, restrictions, and bans through legislation, regulations, and executive actions across all 50 states and 1,462 local jurisdictions.
Solano County
Slightly Anti-Data Center Policies
California’s enacted statewide action concerns consolidating two state data centers. Upcoming rules would add water and energy reporting, environmental review, and potential utility costs for some facilities, without generally banning data-center development.
Rating and summary from California statewide as there are no scored current or future laws outside temporary restrictions for Solano County.
current law · Unincorporated areasSets no data-center-specific rules; the available information only describes general county planning and land-use services.Solano County Code Chapter 28 Zoning Regulations
Specific to Solano County only.
pending · Unincorporated areasTaxes data centers in unincorporated Solano County $0.12 per square foot annually, with inflation adjustments starting in 2028.Solano County Measure E (2026)
What this means
The measure would add a recurring tax on data centers, with annual inflation adjustments, increasing the cost of operating them; the proposal says the tax would apply only if data centers become allowed in unincorporated areas. The sources disagree on the rate—12 cents per square foot versus $5 per square foot—so the size of the added cost is unclear, but the measure offers no direct development benefit.
People behind it
- Department of Resource Management
Proposed the measure and recommended that the Board of Supervisors adopt the resolution placing it on the ballot.
- Solano County Board of Supervisors
Responsible for calling the election and submitting the proposed ordinance to County voters.
- County Administrator
Delegated authority, together with County Counsel, to take actions necessary to place the measure on the ballot.
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- County Counsel
Delegated authority, together with the County Administrator, to take actions necessary to place the measure on the ballot.
- Registrar of Voters
Responsible for providing election services and administering the ballot process.
- Director of Resource Management
Responsible for calculating and publishing annual inflation-based tax-rate adjustments under the measure.
Restrictions & requirementsHide restrictions & requirements2
Imposes an annual business-license tax on data centers located in unincorporated Solano County, calculated per square foot of facility area; the County materials list the rate as $5.00 per square foot, while the resolution summary lists $0.12 per square foot.
Requires the data-center tax rate to be adjusted annually for inflation beginning January 1, 2028; the rate may increase but may not decrease.
Sources
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