SEIA 251: Solar and Energy Storage Installation Requirements Standard: Large Commercial and Industrial Systems

SEIA 251 is open for public comments until June 9, 2025. SEIA is accepting public comments, please access the draft standard to review and comment. Proposals may include the development, revision, reaffirmation or withdrawal of a SEIA American National Standard. For each comment you must identify the location in the document to which your comment applies, a description of the suggested change and justification. Comments lacking a justification may be ignored; simply saying “this is wrong” is not useful. Please ignore editorial issues as the proposed SEIA American National Standard will be edited prior to publication.

Updates on the standard’s development process will be posted here.

The following standards have been developed in accordance with the ANSI Essential Requirements under the Solar Energy Industries Association’s (SEIA) Standards Development Policy and Procedures. SEIA publications, including without limitation all editorial materials, informational text, photographs, illustrations, artwork and other graphic materials, and names, logos, trademarks, and service marks, are the property of the Solar Energy Industries Association, Inc® (SEIA®) and are protected by copyright, trademark and other intellectual property laws.