battery-optimization
(5)
Stem and the Art of Selling Less
The clean energy company made its name helping batteries choose their moment. Its own turning point came when it decided that selling more batteries was the wrong ambition.
The House That Became a Power Plant
Lunar Energy wants the household battery to do three jobs: keep the lights on, trim the bill, and lend a hand to the grid. The clever part is that its software can work even when the battery belongs to someone else.
Michael Baker Is Teaching Batteries to Wait for the Right Five Minutes
A grid battery can make a fifth of its annual revenue in a single five-minute interval. Michael Baker built Tyba around the quiet, difficult art of being ready when that interval arrives.
Emulate Energy
Emulate Energy is a Lund, Sweden cleantech company that builds white-label software turning everyday household devices - EV chargers, heat pumps, home batteries and solar inverters - into a coordinated, grid-ready fleet. Its platform lets utilities, retailers and grid operators connect, control and monetize distributed energy resources: cutting household bills, shaving grid peaks and unlocking flexibility-market revenue without asking customers to change tariffs or behaviour. Founded in 2020 on control-theory research from MIT and Lund University, Emulate runs live programs across Europe and the US.
Plentify
Plentify is a South African climate-tech company that builds AI-driven hardware and software to intelligently manage home energy use. Its flagship device, HotBot, is a smart controller for electric water heaters (geysers) that shifts heating to when power is cheaper and cleaner, while its SolarBot companion maximizes solar self-consumption. Founded in 2017 by Jon Kornik and Kailas Nair, Plentify links water heaters, batteries and solar inverters into a coordinated energy platform that cuts household electricity costs and eases pressure on strained grids. The company raised a roughly $15M Series A in 2025 to expand from South Africa into the UK, Australia and Brazil.