Austin, Texas company making modular batteries installed directly on commercial rooftops beside solar panels

Modular batteries kept at temperature by phase-change heat exchangers can live on roofs next to solar panels and win a commercial market

$8 million Series A extension led by Evergy Ventures, with BlueScope, Cricetus Felix Ventures, Copec Wind Ventures, EDP Ventures, Doral Tech Ventures and Swan Impact Fund

Yotta Energy, founded in 2017 in Austin, Texas, makes a modular battery that it installs directly on roofs next to solar panels. Its main innovation is using phase-change heat exchangers to keep the batteries cool or warm on a hot or cold rooftop, rather than housing them in a protected spot at ground level.

In September 2023 it closed the extension of its Series A, led by Evergy Ventures, the VC arm of utility Evergy. New strategic investors BlueScope and Cricetus Felix Ventures joined, along with existing investors including EDP Ventures. CEO Omeed Badkoobeh said the money would grow deployments to 50, or 3 to 5 MWh of storage, and fund a second-generation battery.

Commercial and industrial rooftops had untapped potential for solar plus batteries

Putting batteries on the roof avoids the ground space of a container at the side of the building

Phase-change heat exchangers address temperature extremes on a rooftop

A utility venture arm and other strategic investors backed deployments

Putting batteries where the solar already is saves ground space, but the product must solve the rooftop's thermal extremes; its utility and building-materials backers hint at likely buyers.

As of 2023-09-19, Yotta Energy had closed an $8M Series A extension, targeted 50 deployments and a second-generation battery, and planned a Series B round early the following year.

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  1. Yotta Energy raised $8M from Evergy and EDP for roof batteries axios.com