The increasingly competitive dynamic duo of solar photovoltaic plus battery storage is taking energy markets by storm

The energy dynamic around renewables is changing so quickly in Colorado that Zach Pierce, a senior campaign representative for the Sierra Club, can hardly keep up with it. “I feel like we’re having to rewrite the talking points on the drawing board every month in Colorado,” he says.

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In December, the state’s largest utility — Xcel Energy — released a short report summarizing the responses to the solicitation it had issued to power suppliers for bids to bring new sources of electricity to the grid. The utility received 430 bids, and 350 of those were for renewable energy projects.

That was remarkable on its own, but what surprised people even more were the bids for projects that added battery storage to the mix. They were cheaper than anyone expected.

“It’s a testament to how quickly the market is changing,” Pierce says.

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