Rankings
Best Iowa 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.
Default view: verified county profiles only.
Include sourced discovery in FinderThis leaderboard shows 0 verified Iowa county profiles. The top 0 verified profiles anchor the quick-read shortlist. 99 sourced-discovery profiles are excluded from the default ranking because they require deeper county-rule review.
Table first
Filter Counties By The Data You Care About
Use the table below as the main ranking experience. Sort any column, filter each field, export the view, and open county profiles for deeper source review.
sourced
Solar potential uses county-centroid irradiance as a broad planning proxy.
Data confidence
Confidence labels describe source support. They do not approve a parcel, project, permit, well, septic system, RV stay, or dwelling.
County-level profile has stronger official source coverage, but parcel-level approval is still not confirmed.
County-level sourced discovery profile has useful official or public sources, but parcel decisions still require local due diligence.
Draft profile should be treated as early screening only until more source review is complete.
What this ranking means
Use this to compare broad county-level solar resource signals before parcel-level shading, slope, storage, grid, and backup-power design.
What it does not prove
A top-ranked county does not mean a specific parcel allows a tiny home, RV, container home, ADU, off-grid dwelling, well, septic system, driveway, utility plan, or full-time occupancy. Always verify the exact parcel and local jurisdiction.
Recommended reading
Guides To Use With This Ranking
Use these guides to turn the ranking into a practical research file. The goal is to compare counties faster, then verify parcel-level facts before making decisions.
Solar
Solar And Off-Grid Guides For Iowa
Compare solar potential with batteries, backup power, snow, shade, slope, access, and water pumping needs.
UtilitiesPower Planning Beyond The Solar Score
Use utility and off-grid guides to think through grid distance, backup power, delivery access, and maintenance.
Local rule verification checklistPlanning Questions For Iowa Land Research
Find state-specific local-rule checklists before relying on a county ranking.
Research context
How To Read This Ranking
Ranking Source Trail
Solar potential rankings use county-centroid solar climatology as a broad planning proxy.