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

13 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 CONCORD, CA

13 listings

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

There are 13 solar & energy upgrades contractors in CONCORD, California with a current state license as of 2026-08-31. The earliest license expiry among them is 2027-03-31; 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
ALCOR ENTERPRISES	559721	B, C-46	2027-03-31	CONCORD	94518	Set up workspace
DANNY B MEINECKE DBA REFRESHED HEATING & COOLING	697406	C-20, C-46	2027-09-30	CONCORD	94520	Set up workspace
DIABLO SOLAR SERVICES INC	454228	C-10, C-46	2028-03-31	CONCORD	94520	Set up workspace
ECO SOLAR	899476	C-46, D35	2027-06-30	CONCORD	94521	Set up workspace
FREDERICK VON STIEFF	1079483	C-46	2027-08-31	CONCORD	94521	Set up workspace
FRESCHI AIR SYSTEMS LLC	1077999	B, C-20, C-36, C-46	2027-07-31	CONCORD	94520	Set up workspace
GREEN AIR HEATING AND AIR CONDITIONING INC	916517	B, C-10, C-20, C-46	2028-06-30	CONCORD	94520	Set up workspace
HIGH DEFINITION SOLAR INC DBA HIGH DEFINITION SOLAR CONSTRUCTION	949189	B, C-39, C-46	2028-06-30	CONCORD	94520	Set up workspace
HOMEXPERTS INC	1053003	B, C-39, C-46	2027-04-30	CONCORD	94520	Set up workspace
N V HEATHORN CO	761659	A, B, C-2, C-4, C-7, C-10, C-16, C-20, C-21, C-34, C-36, C-38, C-39, C-42, C-43, C-46	2027-04-30	CONCORD	94520	Set up workspace
SWIFT CERTIFIED MECHANICAL	717212	C-20, C-36, C-38, C-46	2028-03-31	CONCORD	94521	Set up workspace
UPKEEP INDUSTRIES INC	993919	B, C-10, C-15, C-36, C-46	2028-06-30	CONCORD	94520	Set up workspace
WEST COAST SOLAR INC	908549	C-10, C-39, C-46	2027-12-31	CONCORD	94520	Set up workspace

Quick answers

How many solar & energy upgrades contractors are in CONCORD?: 13 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.