[rainbowzootsuit]

Aircraft contrails have a measurable effect on surface temperature so you might don't need as much as one might think.

https://globalnews.ca/news/2934513/empty-skies-after-911-set...

https://www.forbes.com/sites/arielcohen/2021/01/11/bill-gate...

I'm sure he won't be a Mr. Burns trying to sell more power when reducing the effect of solar panels.