It's not efficient to store energy as electricity. Electricity is a second or third generation power source, so significant efficiency losses have already occurred. Then you have further losses in the storage and distribution of electricity. It's just not practical to ship electricity over long distances as it is fossil fuels. Last time I looked gas was three times cheaper per KWhr than electricity. Fossil fuels are hard to beat, if we can just stop this obsession with CO2 emissions, we might get a sensible debate on future energy supply without being lambasted distorted stats from either side.
I'd love for us to wean ourselves off fossil fuels as it would mean we wouldn't becoming more reliant on unpleasant countries and regimes for our future energy supply, and force us to be hypocrites as we have to suck up to these people cause they've got us over a barrel. But I don't want to see our countryside festooned with windmills and other hair rained schemes. Yes, let's all be more energy efficient, I'm all for that, but having spent time in the Middle East and looking at their grotesque energy consumption (they have air conditioned streets), and combine that with China and South America, we really can't even hope to make a dent in the global carbon footprint, even if we shut our whole country down tomorrow. It's quite depressing really.
The Earth is 4.6 billion years old. Our detailed weather and climate records only go back a couple of hundred years at the most. Beyond that we've only got the odd snapshot of what the climate was like at a few points interspersed over millions of years, and they clearly show our climate has always been dynamic and volatile, so we've hardly got alot of data to base our conclusions of impending environmental catastrophe. We really haven't got a clue about the highly complex nature of our weather and climate. And while we're so focused on this red herring, we're not focussing on the real issues threatening us in the relative immediate future.