alt Hacker NewsI put 7.2kw on my roof in Canada. Tight valley, tons of snow.
You know what I learned about all the projections and estimates?
It’s a complete waste of time . Panels are so cheap now just slap up as many as will physically fit and get on with it. Everything else is a waste of time.
Over their 25+ year lifespan I’ll profit $25k-$30k.
It’s the no brainer of all time.
As soon as my garage build is done I’ll cover that roof in another 8kw of panels too.
I am just astonished, I haven't been following the cost evolution of solar panels, but, as I have quite some tree canopy for our house, I left the the installation of panels to "later", I ran the calculations today for a city in Germany.
- Took the cost of a complete system from a big provider + 30% for the installation.
- Ran the calculations using the JRC tool[0] recommended in the previous comment.
- Added 75% loss because of the tree canopy.
I am still 2 to 3 times cheaper per kWh than my current provider. I would have no trees etc., I would be about 10 times cheaper!
[0]: https://re.jrc.ec.europa.eu/pvg_tools/en/#api_5.3