Overview
- The Department of Energy closed the $489.4 million loan on Wednesday, Aug. 5, 2026, with Amanecer/Dawn Puerto Rico, a subsidiary of Pattern Energy.
- The financing will fund 220 megawatts of battery energy storage in Arecibo and Santa Isabel and is expected to provide backup power for more than 100,000 customers.
- DOE projects the batteries will avoid roughly 13 million cumulative customer interruption hours and lower electricity bills by about $312.5 million over 25 years.
- The finalized deal drops the 70 MWac solar plant that was part of a Biden-era conditional package and adds language enabling a potential pathway to future natural-gas generation.
- Officials say the systems will use U.S.-made battery technology, but the loan notice does not disclose MWh capacity, discharge duration, or detailed construction timelines and locations.