How many solar & energy upgrades contractors are in OAKLAND, 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 OAKLAND, CA

4 listings

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

There are 4 solar & energy upgrades contractors in OAKLAND, California with a current state license as of 2026-08-31. The earliest license expiry among them is 2027-05-31; 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
DAVID THE SOLAR PRO	1143968	C-10, C-46	2027-09-30	OAKLAND	94602	Set up workspace
FIDELITY ROOF COMPANY	156017	ASB, B, C-39, C-43, C-46	2027-05-31	OAKLAND	94608	Set up workspace
GRID ALTERNATIVES	867533	B, C-10, C-46	2027-11-30	OAKLAND	94608	Set up workspace
INTERSTATE ROOFING AND SOLAR	522166	C-39, C-46	2027-12-31	OAKLAND	94603	Set up workspace

Quick answers

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