National Solar Capacity Ranking: 38th
National Energy Storage Capacity Ranking: 24th
Updated September 2026
SEIA’s Major Solar and Storage Projects List is a database of all U.S. ground-mounted solar projects, 1 MW and above, that are either operating, under construction or under development.
1,237 MWdc
419 MWh
38th (41th in 2025 additions)
160,312 homes
2.53%
892
70 (10 Manufacturers, 30 Installers/ Developers, 30 Others)
$1.9 billion
1,831 MW over the next 5 years (ranks 35th)
22,301
Iowa’s energy storage market remains limited but is expected to grow alongside increasing solar deployment.
While dedicated storage policies are still developing, continued solar growth and broader clean energy expansion are expected to drive future storage deployment. As Iowa works to integrate more renewable generation, energy storage will play a key role in improving grid flexibility and reducing curtailment.