I see the cost of [solar] photovoltaics going down and down. Right now it\’s about $4 per watt for full installation. In 10 years\’ time, it will certainly be less than $2. If it\’s $1 or $1.25 then everyone will put it up without subsidy.
That\’s Steven Chu, US Energy Sexcretary.
And he\’s absolutely right. As soon as non fossil energy generation is cheaper than fossil energy generation then the problem goes away.
Yes, even things like cars….if electricty is cheap enough then cracking water to make hydrogen for fuel cells, or battery powered cars, these work.
Essentially, whatever it was that we needed to do we\’ve already done. Sure, getting the manufacturing cost of the necessary technologies takes time but we did start doing this a couple of decades ago.