1103
Solar modules deployed in France in 1992 still provide 75.9% of original output power
(www.pv-magazine.com)
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
this post was submitted on 07 Jun 2024
1103 points (99.6% liked)
Technology
60105 readers
2127 users here now
This is a most excellent place for technology news and articles.
Our Rules
- Follow the lemmy.world rules.
- Only tech related content.
- Be excellent to each another!
- Mod approved content bots can post up to 10 articles per day.
- Threads asking for personal tech support may be deleted.
- Politics threads may be removed.
- No memes allowed as posts, OK to post as comments.
- Only approved bots from the list below, to ask if your bot can be added please contact us.
- Check for duplicates before posting, duplicates may be removed
Approved Bots
founded 2 years ago
MODERATORS
To give you an idea, my 12-panel PV system installed in 2011 has put out 3.5 MWh per year at its peak and now produces between 3.1 and 3.3 MWh yearly, depending on the weather.
It's hard to attribute that just to panel degradation, though. It could be differences in weather (cloudier or snowier this year) for example.
To measure degradation, you'd need to track the peak output of each panel. Enphase microinverters let you get per-panel metrics but I'm not sure which other brands do.
I'm pulling data from my panels into Home Assistant via Enphase's local API (directly from the device), then into VictoriaMetrics (which is similar to Prometheus but with a more efficient file format). I've got per-panel production data at 5 minute granularity from when I installed them until now.
Dan you sound like a rad dude ad I'd love to have a beer with you
Hah, thanks (if you're serious)! Feel free to DM me if you're ever in the San Francisco Bay Area.
We’re getting solar installed very soon, with Enphase micro-inverters. This gets me all kinds of excited. I’m stoked to be getting per-panel metrics, and real keen to shove even more metrics into my Home Assistant.
It's an official integration and works really well. https://www.home-assistant.io/integrations/enphase_envoy/
The inverters all use their serial number as their name by default, but I renamed mine based on array and location to be more useful:
If your installer installs the consumption CTs (optional but the good installers usually include them for free), you'll also have data on total power consumption for your house. It works really well with Home Assistant's built-in energy dashboard.