Dries Buytaert

Solar panel, Boston

64%
Last update: ago
Battery: 64%

I have a solar-powered website at solar.dri.es (mirror). It runs on a Raspberry Pi with a solar panel on our roof deck.

Every 10 minutes, the Raspberry Pi updates this status page. This page is hosted separately, so if my solar-powered website goes offline due to an extended lack of sunlight, cold preventing the battery from recharging, or a system crash, you should be able to see that here.

Metric Status
Last update 5 min 1 sec ago
Day or night Night
Battery capacity 64%
Battery charging Not charging - no sunlight
Charge type Not charging
Outdoor temperature 4°C
Solar system uptime 277 days
Raspberry Pi uptime 6 days
CPU usage 9%
Memory usage 44%
Disk usage 4%
WiFi strength Good
Power source Stable

Hourly battery charge

May 5th May 4th May 3rd May 2nd May 1st April 30th April 29th April 28th April 27th April 26th April 25th April 24th April 23rd April 22nd 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23

A green square means the battery is well-charged and can power the Raspberry Pi for several days. A red square indicates the battery charge is low and requires solar charging soon. A grey square means the Raspberry Pi was offline.

Daily battery levels

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 2025-03-06 2025-03-12 2025-03-18 2025-03-24 2025-03-30 2025-04-05 2025-04-11 2025-04-17 2025-04-23 2025-04-29 2025-05-05

This graph displays the battery's highest (green solid line) and lowest (red dotted line) charge levels each day. It helps track trends and assess the risk of the Raspberry Pi shutting down due to insufficient sunlight or extreme temperatures, which prevent the battery from charging.