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The falling cost of lithium-ion batteries has prompted a “shift in the conversation” around energy storage at Exelon Corp., as the U.S. power generation giant and electricity supplier explores “a wide range of applications on both sides of the meter,” a company official said.

“We haven’t revealed much of our plans yet…but we are definitely looking to expand,” said Lara Pierpoint, senior manager of corporate strategy, innovation and sustainability at Exelon, speaking on the sidelines of the recent ees North America conference and expo in San Francisco, a sister event of Intersolar North America.

Among the key areas Exelon is exploring is “how to enhance the long-term value of our nuclear plants, and really our generation fleet in general, so storage could be a part of that picture,” Pierpoint said. Considering that the company’s power generation portfolio includes more than 32,700 MW of capacity—over half of which is nuclear—the potential opportunity is massive. But the company has just started trying to determine the value proposition of adding flexibility to baseload thermal generation, she added.

Pierpoint’s comments come as America’s nuclear power fleet is under increasing economic pressure and as the Trump administration considers proposals to prop up at-risk facilities.

Exelon is involved in roughly 20 MW of battery storage projects that have come online so far, Pierpoint said. In addition to investigating hybrid opportunities with power plants, Exelon has a strategic investment in distributed energy storage startup Stem Inc., through its Constellation Technology Ventures subsidiary.

More ($): Exelon eyes energy storage additions at nuclear power plants