7 year ROI

>7 year ROI
>provides further insulation for the roof from sun rays
>lasts at least 20 years, with more years at lower efficiency
Yeah I'm thinking it's based

Attached: Roof.jpg (1024x685, 187K)

Other urls found in this thread:

phys.org/news/2019-07-carbon-nanotube-device-channels.html
en.wikipedia.org/wiki/Small_modular_reactor
youtube.com/watch?v=5WPB2u8EzL8
en.wikipedia.org/wiki/List_of_photovoltaic_power_stations
tesla.com/blog/introducing-megapack-utility-scale-energy-storage
twitter.com/SFWRedditGifs

>7 year ROI
absolute piece of shit

this
bait thread

>7 year ROI
what is this, the next LINK?

please do the math for the 7 years

Not buying until 1 year roi

DR;NS

If there was a 7 year ROI on panels, every hedge fund would be using them, and making billions.

No, because it is like saying I invest in a stock and 7 years later they give me the same money I started with back. There is no return.

what about the other 15 years of free electricity?