Fundraise

Spearmint Energy secures $325M expanded debt facility to scale battery storage

What's the deal? Spearmint EnergyDealroom has a profile for this one. Try Dealroom → has secured a $325 million expanded debt facility to fund its large-scale battery storage projects.

The financing comes from NuveenDealroom has a profile for this one. Try Dealroom → Energy Infrastructure Credit, Elda River Capital Management, Harrison Street Asset Management, and Aiga Capital PartnersDealroom has a profile for this one. Try Dealroom →.

Spearmint builds battery systems that store power and feed it back into the grid, aiming to deliver stable, affordable energy.

Why now? Demand for grid storage is surging as renewables expand and power needs climb.

Batteries help balance supply and demand, smoothing out the gaps left by intermittent solar and wind. The new facility strengthens Spearmint's capital base to push these projects forward.

The signal: Spearmint, a breakout-stage company tackling the intermittency problem that drives real-time power and price volatility, is leaning on debt rather than equity to scale — a sign that its battery storage projects are mature enough to attract institutional credit. Backing from multiple investment funds at this size suggests grid storage is increasingly treated as financeable infrastructure rather than venture-stage risk.

Read more: Business Wire

Image credit: "Desert Sunlight Battery Energy Storage System" by blmcalifornia is marked with Public Domain Mark 1.0. To view the terms, visit https://creativecommons.org/publicdomain/mark/1.0/.

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