Rankings

Best California Counties for Solar Potential

A sourced county-centroid solar resource ranking from NASA POWER climatology.

Ranking boundary

Rankings Are Discovery Leads

A high ranking means a county is worth researching first. It is not legal advice, a recommendation to buy land, or proof that any parcel will qualify for a specific use.

Read disclaimer

sourced

Solar potential uses county-centroid irradiance as a broad planning proxy.

Source confidence

Ranking Confidence Strip

A quick trust check for the top-ranked counties: verified profiles, major source coverage, citation depth, and the number of source inputs behind this ranking.

top 10 covered

Top 10 profilesverified

10/10

Sourced county profiles

Source coverageverified

10/10

Major sourced layers present

Citation depthsourced

150

Top 10 county citation URLs

Ranking inputssourced

Source groups used by this ranking

Methodology Data status Source glossary

#1Alpine CountyPartially sourced10

Official California county-rule source anchors added for Alpine County; direct office confirmation remains pending before verified status.

#2Amador CountyPartially sourced10

Official California county-rule source anchors added for Amador County; direct office confirmation remains pending before verified status.

#3Calaveras CountyPartially sourced10

Official California county-rule source anchors added for Calaveras County; direct office confirmation remains pending before verified status.

#4El Dorado CountyPartially sourced10

Official California county-rule source anchors added for El Dorado County; direct office confirmation remains pending before verified status.

#5Fresno CountyPartially sourced10

Official California county-rule source anchors added for Fresno County; direct office confirmation remains pending before verified status.

#6Imperial CountyPartially sourced10

Official California county-rule source anchors added for Imperial County; direct office confirmation remains pending before verified status.

#7Inyo CountyPartially sourced10

Official California county-rule source anchors added for Inyo County; direct office confirmation remains pending before verified status.

#8Kern CountyPartially sourced10

Official California county-rule source anchors added for Kern County; direct office confirmation remains pending before verified status.

#9Kings CountyPartially sourced10

Official California county-rule source anchors added for Kings County; direct office confirmation remains pending before verified status.

#10Madera CountyPartially sourced10

Official California county-rule source anchors added for Madera County; direct office confirmation remains pending before verified status.

#11Mariposa CountyPartially sourced10

Official California county-rule source anchors added for Mariposa County; direct office confirmation remains pending before verified status.

#12Merced CountyPartially sourced10

Official California county-rule source anchors added for Merced County; direct office confirmation remains pending before verified status.

#13Mono CountyPartially sourced10

Official California county-rule source anchors added for Mono County; direct office confirmation remains pending before verified status.

#14Monterey CountyPartially sourced10

Official California county-rule source anchors added for Monterey County; direct office confirmation remains pending before verified status.

#15Orange CountyPartially sourced10

Official California county-rule source anchors added for Orange County; direct office confirmation remains pending before verified status.

#16Riverside CountyPartially sourced10

Official California county-rule source anchors added for Riverside County; direct office confirmation remains pending before verified status.

#17Sacramento CountyPartially sourced10

Official California county-rule source anchors added for Sacramento County; direct office confirmation remains pending before verified status.

#18San Benito CountyPartially sourced10

Official California county-rule source anchors added for San Benito County; direct office confirmation remains pending before verified status.

#19San Bernardino CountyPartially sourced10

Official California county-rule source anchors added for San Bernardino County; direct office confirmation remains pending before verified status.

#20San Joaquin CountyPartially sourced10

Official California county-rule source anchors added for San Joaquin County; direct office confirmation remains pending before verified status.

#21San Luis Obispo CountyPartially sourced10

Official California county-rule source anchors added for San Luis Obispo County; direct office confirmation remains pending before verified status.

#22Santa Clara CountyPartially sourced10

Official California county-rule source anchors added for Santa Clara County; direct office confirmation remains pending before verified status.

#23Santa Cruz CountyPartially sourced10

Official California county-rule source anchors added for Santa Cruz County; direct office confirmation remains pending before verified status.

#24Solano CountyPartially sourced10

Official California county-rule source anchors added for Solano County; direct office confirmation remains pending before verified status.

#25Stanislaus CountyPartially sourced10

Official California county-rule source anchors added for Stanislaus County; direct office confirmation remains pending before verified status.

#26Sutter CountyPartially sourced10

Official California county-rule source anchors added for Sutter County; direct office confirmation remains pending before verified status.

#27Tulare CountyPartially sourced10

Official California county-rule source anchors added for Tulare County; direct office confirmation remains pending before verified status.

#28Tuolumne CountyPartially sourced10

Official California county-rule source anchors added for Tuolumne County; direct office confirmation remains pending before verified status.

#29Ventura CountyPartially sourced10

Official California county-rule source anchors added for Ventura County; direct office confirmation remains pending before verified status.

#30Yolo CountyPartially sourced10

Official California county-rule source anchors added for Yolo County; direct office confirmation remains pending before verified status.

#31Butte CountyPartially sourced9

Official California county-rule source anchors added for Butte County; direct office confirmation remains pending before verified status.

#32Colusa CountyPartially sourced9

Official California county-rule source anchors added for Colusa County; direct office confirmation remains pending before verified status.

#33Glenn CountyPartially sourced9

Official California county-rule source anchors added for Glenn County; direct office confirmation remains pending before verified status.

#34Lake CountyPartially sourced9

Official California county-rule source anchors added for Lake County; direct office confirmation remains pending before verified status.

#35Lassen CountyPartially sourced9

Official California county-rule source anchors added for Lassen County; direct office confirmation remains pending before verified status.

#36Los Angeles CountyPartially sourced9

Official California county-rule source anchors added for Los Angeles County; direct office confirmation remains pending before verified status.

#37Marin CountyPartially sourced9

Official California county-rule source anchors added for Marin County; direct office confirmation remains pending before verified status.

#38Napa CountyPartially sourced9

Official California county-rule source anchors added for Napa County; direct office confirmation remains pending before verified status.

#39Nevada CountyPartially sourced9

Official California county-rule source anchors added for Nevada County; direct office confirmation remains pending before verified status.

#40Placer CountyPartially sourced9

Official California county-rule source anchors added for Placer County; direct office confirmation remains pending before verified status.

#41Plumas CountyPartially sourced9

Official California county-rule source anchors added for Plumas County; direct office confirmation remains pending before verified status.

#42Santa Barbara CountyPartially sourced9

Official California county-rule source anchors added for Santa Barbara County; direct office confirmation remains pending before verified status.

#43Sierra CountyPartially sourced9

Official California county-rule source anchors added for Sierra County; direct office confirmation remains pending before verified status.

#44Sonoma CountyPartially sourced9

Official California county-rule source anchors added for Sonoma County; direct office confirmation remains pending before verified status.

#45Yuba CountyPartially sourced9

Official California county-rule source anchors added for Yuba County; direct office confirmation remains pending before verified status.

#46Mendocino CountyPartially sourced8

Official California county-rule source anchors added for Mendocino County; direct office confirmation remains pending before verified status.

#47Modoc CountyPartially sourced8

Official California county-rule source anchors added for Modoc County; direct office confirmation remains pending before verified status.

#48San Diego CountyPartially sourced8

Official California county-rule source anchors added for San Diego County; direct office confirmation remains pending before verified status.

#49Shasta CountyPartially sourced8

Official California county-rule source anchors added for Shasta County; direct office confirmation remains pending before verified status.

#50Siskiyou CountyPartially sourced8

Official California county-rule source anchors added for Siskiyou County; direct office confirmation remains pending before verified status.

#51Tehama CountyPartially sourced8

Official California county-rule source anchors added for Tehama County; direct office confirmation remains pending before verified status.

#52Trinity CountyPartially sourced8

Official California county-rule source anchors added for Trinity County; direct office confirmation remains pending before verified status.

#53Alameda CountyPartially sourced7

Official California county-rule source anchors added for Alameda County; direct office confirmation remains pending before verified status.

#54Contra Costa CountyPartially sourced7

Official California county-rule source anchors added for Contra Costa County; direct office confirmation remains pending before verified status.

#55San Francisco CountyPartially sourced7

Official California county-rule source anchors added for San Francisco County; direct office confirmation remains pending before verified status.

#56San Mateo CountyPartially sourced7

Official California county-rule source anchors added for San Mateo County; direct office confirmation remains pending before verified status.

#57Humboldt CountyPartially sourced5

Official California county-rule source anchors added for Humboldt County; direct office confirmation remains pending before verified status.

#58Del Norte CountyPartially sourced4

Official California county-rule source anchors added for Del Norte County; direct office confirmation remains pending before verified status.

Ranking Source Trail

Solar potential rankings use county-centroid solar climatology as a broad planning proxy.

Source glossary

Primary Solar Layer

NASA POWER solar climatologyCounty-centroid solar irradiance proxy used for solar potential rankings and score inputs.

Context

Climate and snowfall layersCounty-level climate context used for off-grid and homesteading discovery, not parcel design.Dataset coverage reportLayer-by-layer coverage status for live county datasets.