<ul><li>Stealth startup Base Power has raised $200 million in a Series B funding round led by Addition, Andreessen Horowitz, Lightspeed Venture Partners, and Valor Equity Partners.</li><li>Base Power offers massive backup batteries, 25 or 50 kilowatt-hours, at significantly lower upfront costs compared to competitors like Tesla's Powerwall.</li><li>Customers agree to purchase electricity from Base Power for three years, plus an annual fee, and can benefit from grid-balancing operations where excess electricity can be sent back to the grid.</li><li>The funding will accelerate installations, expansion to new states, and the construction of a battery factory to further support the company's growth.</li></ul>

a16z backs Base Power in $200M round for home backup batteries

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