How many solar & energy upgrades contractors are in WALNUT CREEK, 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 WALNUT CREEK, CA

4 listings

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

There are 4 solar & energy upgrades contractors in WALNUT CREEK, California with a current state license as of 2026-08-31. The earliest license expiry among them is 2027-06-30; 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
ECOTERIUM SOLAR	1140982	C-46	2027-07-31	WALNUT CREEK	94596	Set up workspace
H C I SOLAR	1024165	C-10, C-46	2027-08-31	WALNUT CREEK	94596	Set up workspace
ILLUMINATE SOLAR COMPANY	937645	B, C-39, C-46	2027-06-30	WALNUT CREEK	94598	Set up workspace
VERNOUS INC	1039437	B, C-10, C-46	2028-05-31	WALNUT CREEK	94596	Set up workspace

Quick answers

How many solar & energy upgrades contractors are in WALNUT CREEK?: 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.