Guam — December 24, 2025 — In a major step for Pacific Island energy resilience, the Export-Import Bank of Korea has committed financing to support a 132 MW solar photovoltaic plant paired with a 325 MWh battery energy storage system (BESS) on Guam. The project is being developed by a consortium of Korean firms and is expected to become the largest solar-plus-storage installation on the U.S. territory.
The 325 MWh BESS will store daytime solar generation for discharge during peak hours and cloudy periods, enhancing power reliability on the island.
The deployment reflects a broader trend of combining utility-scale solar with storage to reduce dependency on imported fossil fuels and improve energy security in island and remote grids.
Korean financial backing underscores growing regional cooperation on clean energy infrastructure, especially in strategically important regions like the Pacific.
Guam’s solar-plus-storage project highlights how BESS projects are moving beyond mainland markets into island nations and territories, where energy costs are high and diesel fuel imports dominate. Paired renewables and storage can dramatically cut costs and make power systems more resilient.
Across both stories, we see two major international storage trends in 2025:
Battery storage is scaling globally alongside renewable energy expansion and grid modernization policies. industries and utilities alike are deploying more capacity than ever before.
Solar-plus-storage projects are spreading worldwide, from U.S. territories like Guam to major national markets — a sign that storage is now central to energy security planning.
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