Power Monitoring with Home Assistant: Tracking What Your Home Lab Actually Costs

Fri, 15 May 2026 07:00:00 +0000

I used to wave away questions about what my home lab cost to run with a confident “oh, not much”. Then I put a meter on it. The rack idles at 140 watts, which doesn’t sound like a lot until you do the maths: 140W is roughly 1,226 kWh a year, and at my tariff that’s about £370 just to keep the lights blinking. Measuring it didn’t make it cheaper, but it stopped me lying to myself, and it surfaced a couple of genuine surprises.

Power-Monitoring - Tag - vo.rs

Power Monitoring with Home Assistant: Tracking What Your Home Lab Actually Costs