May 14, 2021: Tucson Electric Power announced on May 3 that its new solar generating facility with battery energy storage had gone live at its new Wilmot Energy Center. This includes a 100MW solar array and 30MW BESS. Each is the largest of their kind on TEP’s local energy grid. TEP will buy power from the WEC under a long-term agreement with an affiliate of NextEra Energy Resources, its owner and operator.
The batteries will be charged by 314,000 solar panels. On most days, TEP will charge the battery in the morning and early afternoon when solar resources are most productive, then deliver stored energy during peak usage periods.
The WEC will produce enough energy over a year to serve the annual electric needs of about 26,000 homes.
This month, TEP will also start delivering power from its new 250MW Oso Grande Wind project in New Mexico. With the addition of the two systems, TEP has the ability to produce nearly 26% of its power from renewable resources.