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Gaming PC on solar panels: how many panels for your rig

An RTX 4090 alone pulls 450 W. Add the rest of the PC, monitor and peripherals: 700-900 W steady. Solar can do it, but sizing matters.

Published on 2026-05-154 min read

Gaming 4 hours daily on a top PC consumes as much as a fridge per month. Covering it with solar is 100% viable and saves $250-350/year on the bill.

Consumption by component

GPU RTX 4090: 350-450 W. RTX 4070: 200 W. CPU i9/Ryzen 9 gaming: 150 W. RAM, SSD, fans: 50 W. 4K 144Hz monitor: 60-90 W. RGB peripherals: 20 W. Typical total: 700-900 W gaming, 200-300 W idle.

How many panels

Gaming 4 h/day = 3 kWh/day = 1100 kWh/year. Three 410 W panels (1.2 kWp) cover it. Gaming at night on battery: add 5 kWh of battery for autonomy.

Hidden draw: streaming + editing

If streaming on Twitch + recording with OBS + Adobe Premiere editing: the PC stays at max for hours. Multiply gaming-only estimate by 1.5.

Tricks to cut consumption

1) Cap FPS at monitor refresh (don't render 300 FPS for a 144 Hz panel). 2) GPU undervolt (-15% draw, 0% perf loss). 3) BIOS eco mode for CPU. 4) Turn off RGB when not needed.

Competitive mode: when it doesn't pay

Only playing competitive (CS2, Valorant, LoL) on 1080p monitor: you don't need a 4090. An RX 6700 / RTX 4060 hits the same FPS with 150 W less. Saves a whole solar panel.