Energy Storage Market: Ørsted Activates 250 MW Texas BESS

Ørsted Energizes 250 MW/500 MWh Battery Storage System in Texas, Strengthening ERCOT Grid 

NEEDVILLE, Texas, United States — August 6, 2026 — Global renewable energy developer Ørsted has commenced commercial operations at its Old 300 Storage project, a 250 MW/500 MWh battery energy storage system (BESS) in Needville, Texas — marking a significant operational milestone for the Energy Storage Infrastructure Market as utility-scale deployments accelerate across the United States. 

The Old 300 Storage facility, situated in Fort Bend County and fully integrated into the Electric Reliability Council of Texas (ERCOT) grid, was constructed using Tesla Megapacks manufactured at Tesla's Lathrop, California Megafactory. Ørsted confirmed the storage system will operate independently from the adjacent 430 MW Old 300 Solar project already active on the same site, with its primary function being to provide dedicated grid stability services during periods of peak electricity demand. 

The completion of Old 300 Storage brings Ørsted's total operating onshore energy portfolio in the United States to 6 GW. The combined solar and storage installations at the Fort Bend County site are projected to generate approximately $110 million in property tax revenue, directly benefiting local infrastructure, public schools, and emergency services. 

The project's development traces back to 2018 under Lincoln Clean Energy, which was subsequently acquired by Ørsted. Construction on the storage component commenced in 2025, with the system now achieving full commercial operation. 

Key Highlights: 

• The 250 MW/500 MWh Old 300 Storage project is now fully operational and integrated into the ERCOT grid in Fort Bend County, Texas, one of the most dynamic electricity markets in the United States. 

• The BESS was constructed using Tesla Megapacks produced at Tesla's Lathrop, California Megafactory, reflecting the growing role of domestically manufactured battery technology in large-scale grid deployments. 

• The storage facility will operate independently from the co-located 430 MW Old 300 Solar project, providing dedicated dispatchable capacity to Texas grid operators during supply-demand stress periods. 

• The combined solar and storage installations are projected to contribute approximately $110 million in property tax revenue to local communities in Fort Bend County over the project's operational lifespan. 

Analyst Insight: 

According to analysts at Next Move Strategy Consulting, the commissioning of large-scale battery energy storage systems such as Ørsted's Old 300 Storage project reflects the accelerating deployment trend across North America, where rising electricity demand and expanding renewable energy capacity are compelling utilities and independent power producers to invest in grid-scale storage infrastructure. NMSC analysts note that the increasing adoption of proven lithium-ion battery technologies — including utility-grade Tesla Megapacks — is enabling faster project timelines and greater operational reliability, positioning the energy storage infrastructure sector for sustained expansion through 2030, driven by frequency regulation, grid arbitrage, and renewable energy integration applications. 

Industry Outlook: 

The operationalization of the Old 300 Storage project underscores the critical and growing role that utility-scale battery energy storage systems play in stabilizing power grids as renewable energy capacity scales. With ERCOT managing one of the most volatile electricity markets in the United States — subject to extreme weather events and rapid demand fluctuations — the addition of 500 MWh of dispatchable storage capacity is expected to materially enhance grid resilience. As global energy transition targets intensify and electricity demand continues to rise, large-scale BESS deployments are anticipated to become an increasingly standard component of grid infrastructure planning across North America and other high-growth regions, including Asia-Pacific and Europe. 

Source: pv magazine USA 

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Prepared By: Sanyukta Deb