Leeward Renewable Energy Signs Long-Term Resource Adequacy Agreement with Pacific Gas & Electric Company for Sierra Pinta Energy Storage Project

112.5 MW self-storage battery project in Arizona to provide power during peak load periods

Supports investment in Arizona and brings tax benefits to Yuma County

DALLAS, June 4, 2024–(BUSINESS WIRE)–Leeward Renewable Energy (LRE), a leading renewable energy company, has signed a 15-year long-term resource adequacy agreement with Pacific Gas & Electric Company (PG&E) for the 112.5 LRE Power Plant megawatt (MW) Sierra Pinta energy storage project in Yuma County, Arizona. Sierra Pinta, a stand-alone battery energy storage (BESS) facility, is adjacent to LRE’s 179-MW White Wing Ranch Solar project currently under construction.

The Sierra Pinta energy storage facility supports the continued deployment of renewable energy and is designed to meet the most stringent safety requirements. It will have a capacity of 450 MWh of clean energy that can be dispatched during peak load hours to meet demand. This storage capacity is equivalent to the energy needed to power over 90,100 US homes¹ for four hours. Given the interconnected nature of the electric systems in Arizona and California, the Sierra Pinta project will contribute to achieving energy and grid resiliency goals in both states.

“We are proud to partner with PG&E on this revolutionary project, supporting the transition to a cleaner and more reliable grid while providing significant fiscal benefits to the community,” said Eran Mahrer, LRE chief commercial officer. “Sierra Pinta Energy Storage expands the reach of our project and further strengthens our commitment to the region. We look forward to continuing our long-term partnership with Yuma County and the local community as we develop and operate the project.”

At the peak of construction, Sierra Pinta Energy Storage is expected to create approximately 98 well-paying union jobs and generate significant economic and fiscal benefits for Yuma County. Construction of the Sierra Pinta Energy Storage Facility is scheduled to begin in September 2024, and the project will be commissioned in the first half of 2025.

About renewable energy Leeward

Leeward Renewable Energy (LRE) is a rapidly growing renewable energy company building a sustainable future for all. The company owns and operates a portfolio of 32 wind, solar and energy storage facilities across the United States with a combined generating capacity of approximately 3 gigawatts, and is actively developing and contracting for a wide range of new renewable energy projects. LRE adopts a tailored, full-lifecycle approach to its projects, which is based on a long-term ownership model and a purpose-driven culture that aims to benefit social partners while protecting and enhancing the environment. LRE is a portfolio company of OMERS Infrastructure, the investment arm of OMERS, one of the largest defined benefit pension plans in Canada, with net assets of C$127.4 billion as of June 30, 2023. More information can be found at www.leewardenergy.com.

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¹ This figure is calculated by taking actual or projected total net energy generated or stored (MWh) data, obtaining the appropriate state-level average monthly residential energy consumption data from the US EIA, making the necessary unit conversions, dividing the total net energy data thus, the year based on the energy consumption of residential buildings to find a calculation of equivalent houses powered by a given facility and aggregating all data for the facility over the appropriate time period. For these calculations, LRE assumes energy use is constant across the state.

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