Rondo Energy’s 100 MWh heat battery powered by 20 MW of onsite solar
Rondo Energy’s 100 MWh heat battery, powered by 20 MW of onsite solar, could store industrial heat by using low-cost grid electricity generated during sunny and windy hours, the company said. October 21, 2025 William Driscoll From pv magazine USA Rondo Energy has announced that a 100 MWh heat battery it installed in California, powered solely by 20 MW of onsite, off-grid solar, has entered daily automatic operation. The heat battery provides continuous high-pressure heat and steam to a Holmes...













