Spearmint Energy develops and operates large-scale battery storage projects aimed at delivering stable, resilient and affordable power to the grid. The company’s operating portfolio includes projects such as Tierra Seca, Seven Flags and Revolution, and it maintains a broader development pipeline across the United States. Spearmint recently strengthened its balance sheet via a $325 million expanded debt facility to advance operating assets and fund strategic growth initiatives. Leadership highlights include founder, president and CEO Andrew Waranch, who framed the financing as growth capital to accelerate deployment and optimization of battery storage. Lenders participating in the facility cited the growing importance of battery storage within the nation’s energy infrastructure and their support for Spearmint’s asset quality and growth strategy.

Total raised

$665M

Funding rounds

5

Latest round

Debt Financing

Latest activity

Jun 2026