Waste of time & money
With China's & India's economies growing at 8-10%, it wouldn't make a crap of difference if the UK cut it's CO2 to zero or doubled it's output.
This £250 a year tax we're all going to paying should be to embrace & deal with climate change, not Canute-like try and stop it. I'm sure the JET laboratory could use the £100bn better than subsidising bloody windmills. We could be world leaders in fusion power - we can't even keep the one windmill factory open on the IoW - now have to import them from China!
The 1.2m jobs are to be civil servants - one department collecting carbon taxes, another handing out carbon credits - just like the existing big government bloat we have now.