How many solar & energy upgrades contractors are in NAPA, CA?

4 with a current California license, as of 2026-08-31.

How do I check a California contractor license is current?

Every listing shows its state license number and expiry date. Verify any of them directly against the California CSLB licensee database.

Solar & Energy Upgrades contractors in NAPA, CA

4 listings

Source: California CSLB license records. Last verified 2026-08-31.

There are 4 solar & energy upgrades contractors in NAPA, California with a current state license as of 2026-08-31. The earliest license expiry among them is 2026-10-31; every listing shows its own number and expiry date. All are drawn from the California CSLB register; expired and inactive licenses are excluded.

Business	License	Type	Expires	City	Zip
CROSS VALLEY CONSTRUCTION	584644	B, C-10, C-36, C-46	2028-01-31	NAPA	94558	Set up workspace
J R CONSTRUCTION - SOL SOLUTIONS INC	953923	B, C-46	2026-10-31	NAPA	94558	Set up workspace
PETERSON & SONS INC DBA GREEN STOCK SOLAR	961800	C-46	2027-07-31	NAPA	94558	Set up workspace
SMARTBUILT INC	1141919	B, C-10, C-27, C-46	2027-08-31	NAPA	94558	Set up workspace

Quick answers

How many solar & energy upgrades contractors are in NAPA?: 4 with a current California license, as of 2026-08-31.
How do I check a license is current?: Every listing shows its state license number and expiry. Verify any of them directly against the California CSLB licensee database.