IID A century (ism/ice. Since 1911 March 27, 2018 Coachella Energy Storage Partners, LLC 750 West Main Street El Centro, CA 92243 Attention: Mike Abatti, Managing Partner Re: BESS Operations and Maintenance Contract I Continuing Parts and Services Warranties Dear Mr. Abatti: In your letter to the IID general manager dated January 10, 2018, you point out that the Battery Energy Storage System operations and maintenance contract between IID and CESP (SA 8100002196) will expire March 31, 2018. Your letter invites MD to consider extending the term of that contract. Please be advised IID has determined it will seek a new contract with GE Grid Solutions to commence after the expiration of the contract with CESP on March 31, 2018. Although the contract with CESP will expire on March 31, 2018, the EPC agreement between IID and CESP for the BESS contains warranty provisions for parts and services that run for 18 months from the date of ?final completion? of the BESS project (See pars. 8.1.1, 8.1.2 and 8.2). As final completion of the BESS project was not achieved until June 29, 2017, the parts and services warranties run through December 29, 2018. Please be advised IID will hold CESP to the terms of those warranties until they expire. Sincerely. OZTL Vance M. Taylor Assistant Counsel IMPERIAL IRRIGATION DISTRIC I GENERAL OFFICE - 333E BARIONI BLVD. - PO. BOX 937 - IMPERIAL, CA 92251 TELEPI IONE (760) 3399564 FAX (760) 339-9062