Essex Property Trust (ESS) announced the successful commissioning of its long‑duration iron‑flow battery systems at the Turlock Irrigation District Solar‑Over‑Canal Project in California. The battery installation, which was completed in August 2025, consists of two 75 kW iron‑flow units—totaling 150 kW—integrated with the project’s solar arrays as part of the broader Project Nexus initiative.
The deployment is a key element of ESS’s strategy to broaden its renewable energy portfolio and provide grid‑scale storage for agricultural and municipal customers. It demonstrates the company’s iron‑flow technology in a real‑world infrastructure application, following earlier commercial deployments with Sacramento Municipal Utility District and Portland General Electric.
Project Nexus is a $20 million state‑funded program that brings together the Turlock Irrigation District, the California Department of Water Resources, UC Merced, and Solar AquaGrid. The solar‑over‑canal design reduces water evaporation, improves water quality, and adds power generation while the battery system enhances grid resilience and enables demand‑response participation.
For ESS, the commissioning signals a shift toward diversified renewable assets and positions the REIT to capture growing demand for storage solutions in the West Coast market. The milestone may open opportunities for similar projects across its portfolio, potentially enhancing long‑term shareholder value.
For the TID, the battery system improves grid resilience, smooths solar output, and supports water‑conservation goals. The integration of storage allows the district to participate in grid services and generate additional revenue streams.
The battery deployment showcases the safety and long‑duration characteristics of iron‑flow technology, which uses iron, salt, and water. The system offers non‑flammable, long‑life storage with no capacity fade, reinforcing the viability of this technology for large‑scale infrastructure projects.
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