Utility Adds 2.5 MW Of Demand Response Capabilities With Very Unusual "Batteries"

Hawaiian Electric (HECO) recently added 2.5MW of grid services to its grid, allowing it to store energy during peak solar and wind production periods, and did so without any traditional batteries, flywheels, or pumped hydro. Even better, the hardware required is very minimal, and in fact, most of it already exists in every residential grid in the world.

Demand response grid services are important because the times when renewable energy is flowing do not always match up with when people are using electricity. In the below graph, you can see that if we can shift the energy use from the peak demand time (red) to times when peak renewable generation is happening (yellow), you can use more clean energy. Pretty simple, right? As always, the devil’s in the details…

Meet Shifted Energy

Hawaii’s startup ecosystem is not well known, but the confluence of high costs (of everything), being 3000 miles from the nearest landmass, and a steady influx of capital from military and tourism create an interesting space for innovation. Given that Hawaii, like many islands, is largely powered by diesel generators, the cost of electricity is insanely high, making Hawaii a great laboratory for cleantech startups.

One of these startups, Shifted Energy, a developer of software and controllers that retrofit electric water heaters, has partnered with Open Access Technology International (OATI) to outfit up to 2,400 water heaters with smart controls through Hawaiian Electric’s Grid Services Purchase Agreement. Shifted Energy installs

Read More At CleanTechnica

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