&gt; over around 30 years before it&#x27;s really worth it<p>That is ANCIENT Solar Technology. If you care to read this it actually is<p>Energy payback estimates for rooftop PV systems are 4, 3, 2,
and 1 years: 4 years for systems using current multicrystalline-silicon
PV modules, 3 years for current thin-film modules,
2 years for anticipated multicrystalline modules, and
1 year for anticipated thin-film modules<p><a href="http:&#x2F;&#x2F;www.nrel.gov&#x2F;docs&#x2F;fy04osti&#x2F;35489.pdf" rel="nofollow">http:&#x2F;&#x2F;www.nrel.gov&#x2F;docs&#x2F;fy04osti&#x2F;35489.pdf</a><p>I think you need to re-research solar technology.