To enhance system reliability and support the integration of economical resources, SPS filed an application seeking approval of six power purchase agreements with NextEra Energy for battery energy storage systems totaling 570 megawatts of capacity Dec. 9, 2025. The agreements are expected to cost about $99.3 million per year for the entire company in 2028, which will be the first full year all the battery facilities are running. Of that total, roughly $45.2 million will apply to Texas customers.
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