# klaasnicolaas/home-assistant-glow

⚡ The power of energy measurements in your house

Repository: https://github.com/klaasnicolaas/home-assistant-glow
Canonical: https://ross.abutalabs.com/products/home-assistant-glow
Homepage: https://glow-energy.io/
License: MIT
License Family: permissive
Topics: energy, home-assistant, esphome, hacktoberfest, iot, electricity, esp32, glow, smartmeter, esp8266
Last push: 2026-09-02T05:10:35+00:00

## Health v2 (maintenance only)
Score: 95/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 100, release rhythm 87, longevity 100
- inputs: {"age_days": 1863, "days_push": 0, "days_rel": 87, "gap_med": 30, "n_releases_24m": 8}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1268, forks 182 (observed 2026-09-03T02:15:14.087276+00:00)

## What it is
Home Assistant Glow is an open-source project that turns an ESP32/ESP8266 microcontroller with a photodiode into an energy meter reader for utility meters that lack a P1 port, by detecting the meter's pulse LED. It provides ESPHome-based firmware installable via ESP Web Tools and integrates the measurements into the Home Assistant Energy dashboard.

## Use cases
- read energy consumption from a meter without a P1 port
- track household electricity usage in Home Assistant
- measure kWh and watt usage via a meter's pulse LED
- build a DIY smart meter with ESP32 and a photodiode
- feed the Home Assistant Energy dashboard with real consumption data
- monitor energy usage hidden in a meter cupboard with a 3D-printed case

## When to choose
- your utility meter has an imp/kWh pulse LED but no P1 port
- you already use Home Assistant and want native energy dashboard integration
- you want a cheap DIY hardware solution with ESPHome firmware
- you prefer browser-based firmware flashing with ESP Web Tools

## When to avoid
- your meter has a P1 port or native smart meter integration available
- you need gas or water metering rather than electricity pulses
- you don't use Home Assistant and want a standalone energy monitor
- you are unwilling to assemble simple hardware (photodiode, jumpers, ESP board)

## Facets
- artifact type: application
- maturity: active
- function: iot, monitoring, analytics
- domain: iot, energy
- platform: iot
- tags: energy-monitoring, smart-meter, pulse-led, esphome, home-assistant, esp32, esp8266, 3d-printed-case, firmware, self-hosted, home-automation

## Member repositories
- klaasnicolaas/home-assistant-glow (main) score 95

## Provenance
- Observed fields: from GitHub, fetched 2026-09-03T02:15:14.087276+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T05:03:51.931144+00:00, confidence not recorded.
  - readme: https://github.com/klaasnicolaas/home-assistant-glow (fetched 2026-09-03T02:15:14.087276+00:00, sha 9d5f8405b593)
  - homepage: https://glow-energy.io/ (fetched 2026-08-29T12:16:13.306030+00:00, sha 46abf053448c)
  - site_page: https://glow-energy.io/docs/introduction (fetched 2026-08-29T12:16:13.315041+00:00, sha 09747d72d0bb)
  - site_page: https://glow-energy.io/docs/faq (fetched 2026-08-29T12:16:13.317011+00:00, sha 226e8e72d621)
  - site_page: https://glow-energy.io/docs/getting-started (fetched 2026-08-29T12:16:13.319359+00:00, sha 80dca12d815b)
- Data as of 2026-08-30T08:39:29.467469+00:00.