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Cake day: March 19th, 2025

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  • One use-case is people with dynamic energy contracts. You don’t want your solar panels to return power to the grid if the energy price is negative, because you’d pay for every watt returned. This way the energy provider can remotely stop the inverters if prices are negative.

    Though afaik the on-board connectivity is usually exclusively for the API the manufacturer’s app uses. There’s some energy providers in the Netherlands that use this API as well, but this is slow and sometimes unreliable. My employer also installs these panels+inverters, but we control them using modbus via a device we manufacture that you plug in to the modbus/control port. It connects to us via mobile 4g, because we don’t want to rely on the customer’s network (even when wired).