OpenEMS - Open Source Energy Management System
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Updated
May 22, 2026 - Java
OpenEMS - Open Source Energy Management System
time-of-use (tou) tariff based solar and grid energy management platform
Home Assistant integration for HVAC energy optimization
Compare Ontario electricity plans (Tiered, TOU, ULO) — editable rates, kWh calculator, Docker + Traefik PWA.
Autonomous Sigen inverter controller for home solar and battery systems. Very lightweight (can run on RPi), making mode decisions every 5 minutes based on solar forecasts and live battery SOC — optimising between, self-consumption, grid export, and overnight TOU charging. Using Irish ESB Solar forecasts but portable to other providers.
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