Austin Energy has finalized a new battery storage agreement with Jupiter Power for up to 200 megawatts of electrical power capacity, a utility-scale project that is expected to begin commercial operation in 2030.

The utility announced the agreement on October 28, 2026, saying the deal will significantly expand its local energy storage portfolio and strengthen reliability and price stability for customers.

Portfolio Grows to 340 MW

With the addition of the new project, Austin Energy's battery storage portfolio will grow to 340 MW of capacity. That total exceeds the target set in the utility's Resource, Generation, and Climate Protection Plan, which called for studying the feasibility of installing 300 MW of battery storage by 2030.

The new agreement follows an existing arrangement between the two parties. Jupiter Power already holds a contract with Austin Energy for 100 MW of utility-scale battery storage that is scheduled to come online by the end of 2027.

In response to a recent solicitation, Jupiter Power submitted proposals to add further battery facilities at its Austin site.

Details of the New System

The new agreement covers a 200 MW, two-hour battery system. According to Austin Energy, the system will help protect against and mitigate local wholesale energy price risk and will provide flexible, dispatchable power once it begins commercial operation in 2030.

Under the terms of the arrangement, Austin Energy will not be required to invest in the construction or ongoing maintenance of the project. The utility said the deal reinforces its commitment to building a cleaner, smarter, and more reliable energy future for the Austin community.

Origins in an All-Resource RFP

The agreement grew out of a procurement process that began in November 2025, when Austin Energy issued an All-Resource Request for Proposals seeking local energy resources across all technology types.

Jupiter Power's proposals to add battery capacity at its Austin site were submitted as part of that effort.

Utility Perspective

Stuart Reilly, Austin Energy General Manager, described the agreement as another major step in the utility's strategy. "This new agreement with Jupiter Power represents another major step forward in our strategy to enhance reliability, manage risk, and support Austin's energy goals," Reilly said.

"Battery storage is a crucial tool for balancing our grid, and this expanded partnership allows us to deliver economic value and operational flexibility while keeping customer bills stable."

Developer Perspective

Jack Godshall, Chief Operating Officer of Jupiter Power, said the company was proud to expand its work with Austin Energy and to support the utility's commitment to providing reliable, affordable power to the community.

"Our company's deep roots in Austin make these projects especially meaningful," Godshall said. "We're excited to bring more battery storage to the city and help meet the energy needs of our neighbors."

Timeline at a Glance

The two Jupiter Power projects are set to come online on different schedules. The earlier 100 MW contract is slated to reach operation by the end of 2027, while the newly finalized 200 MW system is expected to begin commercial operation in 2030.

Together with Austin Energy's other storage resources, the projects bring the utility's planned battery storage capacity to 340 MW, ahead of the 300 MW feasibility target in its resource and climate protection plan.

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