United States › California › Alameda County

Alameda County, CA solar installation & market data

Updated May 18, 2026 By The SolarDNA Data Team

Alameda County has 86,492 solar installations across 53 zip codes at a median installed cost of $4.45/W, installations up 15.6% over the trailing twelve months, and an installs-weighted Market Score of 50.

See Alameda County on the map California market

Active installations

86,492

Zip markets

Median cost

$4.45/W

12-mo growth

▲ 15.6%

Installers active

1,499

County Market Score

Great · installs-weighted across 53 zips

Best zip in Alameda County scores higher than 99% of U.S. zip markets.

Versus California

How Alameda County compares with the state

Installed cost

$0.18/W above

state median $4.26/W

Market score

50 vs 53

California scores 53

Share of state installs

3.83%

of 2.3M tracked statewide

Battery attach

10.7%

state 12.7%

Statewide momentum

▲ 1.1%

residential solar added in California, 12 months through Jul 2026

Statewide market

2.3M systems

30.9% of homes · utility-reported through Jul 2026

Next-12-month outlook: 5,490–6,710 installs (midpoint 6,100)

Trailing-12-month installs carried forward at half the observed growth rate (capped at ±30%), with a ±10% band. Not a forecast of permits or policy.

Growth & pricing

Alameda County by year

5,659 installs in the trailing twelve months vs 4,896 before

Installations by year

Median installed cost, $/W DC by year

Installer comp set

Who installs in Alameda County

Summed across every zip in the county

Export CSV

#	Installer	Installs	12-mo	Zips	$/W
1	TESLA	15,985	596	47	$4.98
2	SUNRUN	9,770	908	45	$4.35
3	SUNPOWER	6,711	59	46	$4.55
4	PETERSENDEAN	2,130	0	44	$3.80
5	YOUR ENERGY SOLUTIONS	2,037	151	44	$3.72
6	SEMPER SOLARIS	1,761	94	43	$4.31
7	SUNGEVITY	1,683	0	44	$4.29
8	CITADEL ROOFING AND SOLAR	1,422	220	40	$3.10
9	BRIGHT OPS	1,377	522	42	$5.56
10	INFINITY ENERGY	1,285	13	42	$4.04
11	BETTER EARTH	1,200	0	44	$4.46
12	FREEDOM FOREVER	1,036	147	43	$5.00
13	KOTA CONSTRUCTION	1,031	7	42	$5.14
14	A1 SUN	896	78	23	$4.92
15	HOOKED ON SOLAR	882	38	44	$4.42
16	SYNERGY POWER CA	862	0	40	$3.75
17	SOLAR TECHNOLOGIES	809	65	41	$4.53
18	SAVE A LOT SOLAR	724	28	41	$3.92
19	LEONARD ROOFING	720	10	4	$3.11
20	NRG CLEAN ENERGY	710	0	43	$3.74
21	CLEAN SOLAR	659	23	40	$4.42
22	THE SOLAR COMPANY	617	0	44	$5.82
23	SOLAR OPTIMUM DESIGN ELECTRIC	590	0	41	$3.09
24	SUNLIGHT POWER	590	0	43	$7.08
25	HIGH DEFINITION SOLAR	588	0	43	$7.25

Zip markets

Zips in Alameda County

Ranked by installations · click for the zip market

Zip	Installs	$/W	Score
94568	7,436	$4.19	47 B
94550	5,794	$4.29	56 A
94539	4,723	$4.21	56 A
94566	4,647	$4.25	57 A
94536	3,909	$4.25	52 A
94560	3,567	$3.99	45 C
94551	3,516	$4.28	61 A
94544	3,341	$4.25	46 B
94611	3,149	$4.82	50 A
94538	3,113	$4.00	44 C
94587	3,106	$4.34	53 A
94546	2,887	$4.54	56 A
94588	2,752	$4.20	61 A
94605	2,182	$4.86	53 A
94541	1,929	$4.64	47 B
94602	1,877	$4.80	49 B
94555	1,801	$3.92	53 A
94619	1,686	$4.94	47 B
94545	1,650	$4.50	43 C
94577	1,648	$4.69	57 A
94618	1,623	$4.93	49 B
94707	1,599	$5.10	54 A
94542	1,520	$4.38	42 C
94552	1,477	$4.54	43 C
94708	1,366	$5.10	49 B
94610	1,203	$4.77	52 A
94705	1,130	$5.12	39 C
94703	1,050	$4.67	42 C
94702	1,047	$4.71	47 B
94706	1,014	$4.87	44 C
94580	929	$4.73	36 D
94578	914	$4.91	49 B
94608	875	$4.57	47 B
94607	851	$4.50	41 C
94609	795	$4.50	41 C
94601	795	$4.77	50 B
94579	729	$4.54	41 C
94603	726	$5.12	50 A
94621	449	$5.12	37 D
94606	447	$4.59	39 C
94710	427	$4.72	38 D
94709	317	$5.13	36 D
94704	223	$4.97	36 D
94586	116	$4.06	40 C
94612	70	$4.99	35 D
94660	57	$2.36	48 B
94701	11	$7.72	28 F
94540	7	$7.42	28 F
94604	3	$3.54	42 C
94543	3	$7.53	28 F
94502	2	$6.00	30 F
94537	2	$7.08	28 F
94720	2	$5.03	35 D