Solar & energy

Building permit datafor solar & energy

Solar, battery, EV-charger, heat-pump and service-upgrade permits by county and month, with installer, work description and job value.

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Two installers in hard hats fit solar panels onto a shingled roof — Rooftop PV installation, Massachusetts · Photo: Lindsey Dillon, U.S. Department of Energy

Building permits: 4.9M
Building departments: 591
Permit history: Since 1963
Update cadence: Monthly

Track installations market by market

Every residential system goes through the building department, so permits count the market installer by installer.

Adoption curves

Installations by county and month.

Installer share

Who is installing where, and how fast they are growing.

Electrification signals

Heat pumps, panel upgrades and EV chargers alongside solar.

Permits that count the market

Rooftop solar

Residential and commercial PV.

Battery storage

Home batteries, with and without solar.

EV chargers

Charger circuits and service work.

Heat pumps

Replacements and new installations.

Service upgrades

100A-to-200A upgrades ahead of electrification.

Installers

Contractor names on every permit.

What every file holds

4.9M permits from 591 building departments, in one schema.

Data dictionary Pricing

The same columns for every department: Permit number, type, work description, status, application, issue and completion dates, job value, contractor, site address and parcel ID.
Full history, or the past 12 months monthly: A county’s full history is $250–$500 once; a fresh 12-month file every month is $45–$75/mo. Statewide files and nationwide licensing too.
Joins to parcels: 99% of permits carry the county’s parcel ID, for joins to assessor rolls and parcel boundaries.
CSV, Excel or Parquet: Chosen per order, one file per county or state.

Common questions

Do permits include system size?

Where the department records it in the work description (“Installation of 16 solar panels”); descriptions are delivered as published.

Can I follow a market monthly?

Yes. A monthly subscription delivers a fresh file of the trailing 12 months for each county or state.

What formats do files come in?

CSV, Excel or Parquet, chosen per order.

How is it priced?

Counties are $250–$500 for the full history or $45–$75/mo for monthly updates, by county size. Statewide files are priced on permit count and never cost more than their counties combined. Every county and state page shows its exact price.

Every installation in your territory

Subscribe by county or state, or license nationwide.

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