Dries Buytaert

Solar panel, Boston

99%
Last update: ago
Battery: 99%

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 1 min 27 sec ago
Day or night Day
Battery capacity 99%
Battery charging Charging - very slowly
Charge type Boost charge
Outdoor temperature 28°C
Solar system uptime 430 days
Raspberry Pi uptime 3 days
CPU usage 9%
CPU temperature 52°C (normal)
Memory usage 44%
Disk usage 4%
WiFi strength Good
Power supply 1.26V (normal)

Hourly battery charge

October 6th October 5th October 4th October 3rd October 2nd October 1st September 30th September 29th September 28th September 27th September 26th September 25th September 24th September 23rd 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% 2025-08-07 2025-08-13 2025-08-19 2025-08-25 2025-08-31 2025-09-06 2025-09-12 2025-09-18 2025-09-24 2025-09-30 2025-10-06

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.