evcc is an open-source Go application that manages electric vehicle charging based on your home solar generation and grid tariffs. It runs locally without cloud dependencies and integrates with dozens of inverters, meters, home automation switches, and vehicle APIs. Instead of relying on vendor apps, it reads your live grid export and dynamically adjusts charging current to maximize self-consumption.
If you have solar panels and a supported charger, it is worth the afternoon required to write the YAML configuration file. The catch is hardware fragmentation; while the list of supported devices is massive, tracking down undocumented Modbus registers or flaky vehicle API tokens can stall your setup. It is a utility for people who want local control, not a plug-and-play consumer appliance.
more: https://github.com/evcc-io/evcc
my other side: ivo.blogspot.com
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