so...that was the secret all along?
this post was submitted on 20 Dec 2025
119 points (100.0% liked)
Comradeship // Freechat
2641 readers
154 users here now
Talk about whatever, respecting the rules established by Lemmygrad. Failing to comply with the rules will grant you a few warnings, insisting on breaking them will grant you a beautiful shiny banwall.
A community for comrades to chat and talk about whatever doesn't fit other communities
founded 4 years ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
it's somewhat dependent on the angle and rotation of the roof relative to the sun whether solar would be effective at all. it can also take several decades to make your money back in electricity savings and there's a lot of reasons not to commit to that.
Germany paid early and bandwagon adopters of rooftop solar almost €0.10/kWh to sell back to the grid for fifteen plus years. There is so much residential solar here it actually causes problems for grid operators.
That buyback subsidy has ended but with some of the highest electricity prices in the world and a political environment which is pushing electric heating, new solar installs are still popular.
Several decades? Is this hypothetical house inside a cave? Sounds more like anti-renewable energy propaganda.
In Australia, it takes between about 3-7 years to break even on the total cost of a system. Not close to several decades.
not propaganda, just southern canada and a decade out of date.
Still plenty of sun in southern Canada to make enough power for your house. The payback isn't based on latitude so much as it is local power cost. Granted, latitude matters eventually, like in northern Canada. But wind would be an excellent alternative in that case.
Still sounds questionable. E.g. the chart here for Canadian solar (https://kuby.ca/solar/solar-information/articles/the-cost-of-solar-panels) shows that you hit a relative break even point at 9-10 years on a $15k system. And a complete break even at under 20 years.
That sounds well under several decades to me.