Open-source energy software

30 open-source libraries, tools and applications tagged energy, ranked by how closely energy is their primary purpose, then by adoption and maintenance health. Each entry links to a page with sources, use cases and when to choose or avoid it.

30 products, primary matches first, then adoption-weighted; health v2 shown.

Product	Health v2	Stars	Maturity
evcc evcc is an open-source EV charge controller and home energy management system written in Go, designed to run locally without cloud dependen…	95	7356	active
dalathegreat/Battery-Emulator Battery-Emulator is firmware that lets second-life EV battery packs be reused as stationary home energy storage by translating communicatio…	94	2959	active
tbnobody/OpenDTU OpenDTU is ESP32 firmware that replaces the proprietary Hoymiles DTU cloud gateway for solar micro-inverters, communicating directly over t…	93	2192	active
ARC-MX/sgcc_electricity_new A Home Assistant integration (deployed via Docker) that scrapes China State Grid (SGCC) accounts to fetch electricity billing and usage dat…	83	1892	active
pybamm-team/PyBaMM PyBaMM (Python Battery Mathematical Modelling) is an open-source Python package for fast, flexible physics-based battery simulation. It pro…	100	1701	active
Akkudoktor-EOS/EOS AkkudoktorEOS is a self-hosted Python application that simulates and optimizes home energy systems, generating optimized plans for photovol…	77	1699	active
pvlib/pvlib-python pvlib-python is a community-developed Python toolbox providing documented functions and classes for simulating the performance of photovolt…	87	1672	stable
KEV0143/Adaptive-forecasting-of-electricity-consumption-24-168-720-h-with-load-regime-conditioning An open-source tool for adaptive forecasting of hourly electricity consumption over 24, 168, and 720 hour horizons, using load regime condi…	56	1627	active
bramstroker/homeassistant-powercalc PowerCalc is a Home Assistant custom component (installable via HACS) that creates virtual power and energy sensors to estimate the consump…	94	1604	active
NatLabRockies/EnergyPlus EnergyPlus is a whole-building energy simulation program that models energy consumption and water use in buildings. It is developed in C++ …	91	1602	active
OpenEMS/openems OpenEMS is an open-source, modular Energy Management System for monitoring and controlling energy storage, photovoltaics, EV chargers, heat…	96	1562	active
3dg1luk43/ha_washdata A Home Assistant custom integration that monitors smart-plug-connected appliances like washing machines, dryers, and dishwashers. It learns…	82	1345	active
e2nIEE/pandapower pandapower is an open-source Python library for power system modeling, analysis, and optimization, built on pandas and PYPOWER. It provides…	99	1297	stable
klaasnicolaas/home-assistant-glow Home Assistant Glow is an open-source project that turns an ESP32/ESP8266 microcontroller with a photodiode into an energy meter reader for…	93	1272	active
mz-automation/libiec61850 libiec61850 is an open-source (GPLv3) C library implementing the IEC 61850 client and server protocols MMS, GOOSE, Sampled Values, and R-Se…	82	1226	stable
Versatile Thermostat Versatile Thermostat is a feature-rich custom component for Home Assistant that turns any heating or cooling equipment (radiators, AC units…	95	1205	active
flixlix/power-flow-card-plus Power Flow Card Plus is a highly customizable Home Assistant Lovelace card that visualizes live (instantaneous) power flow between grid, so…	76	1195	active
diyBMS v4 Version 4 of a do-it-yourself battery management system (BMS) for lithium-ion battery packs and cells, including ESP32-based controller boa…	44	1136	active
steve-community/steve SteVe is an open-source OCPP server implementation in Java for managing EV charging stations, charge points, user data, and RFID card authe…	91	1128	active
Anker Solix Home Assistant Integration A Home Assistant custom integration for Anker Solix power devices such as Solarbank, smart meters, and portable power stations, built on th…	92	1103	active
cloud-carbon-footprint/cloud-carbon-footprint Cloud Carbon Footprint is an open-source application that estimates energy consumption (kWh) and carbon emissions (metric tons CO2e) from p…	66	1052	active
David00/rpi-power-monitor A Raspberry Pi-based power monitoring application combining custom hardware and Python software to measure home electricity consumption, so…	64	1034	active
BottlecapDave/HomeAssistant-OctopusEnergy An unofficial Home Assistant custom integration for Octopus Energy UK accounts. It brings electricity and gas meter data, tariffs, intellig…	98	1022	active
lumapu/ahoy AhoyDTU is open-source firmware for ESP32/ESP8266 that communicates with Hoymiles microinverters via radio (NRF24/CMT2300A), providing a lo…	38	1019	active
AidLux (AidLearning) AidLux (originally AidLearning) is an AIoT development platform that runs a native Ubuntu Linux environment with GUI, deep learning tooling…	63	5812	active
mlco2/codecarbon CodeCarbon is a lightweight Python library and CLI that estimates and tracks CO2 emissions from local computing hardware (CPU, GPU, RAM) by…	96	1921	active
openremote/openremote OpenRemote is a 100% open-source (AGPLv3) IoT platform for device management, automation, and data visualization, built on a Java backend w…	93	1909	active
ONEARMY/community-platform An open-source community platform built by One Army to help global communities connect, collaborate, and share knowledge around social and …	93	1403	active
emoncms/emoncms Emoncms is an open-source PHP web application for processing, logging and visualising energy, temperature and other environmental sensor da…	99	1323	active
google/makani The open-sourced software stack from Google X's Makani project, which developed a commercial-scale airborne wind turbine (energy kite). It …	10	1202	maintenance