Thing is with CCS on a rankine supercritcial coal station linked to the vast empty space under the north sea you are looking at close to 0g/km. Use combined heat and power to make use of the heat dumped by the stations and coal doesn't really cause a big concern.
Plus it gives you the benefit of being able to run a car on coal. You can't do that yet.
Problem is cost. Retrofitting CCS to current plant is going to make Electricity prices sky rocket, and they're already high enough. I work at a Coal fired station, and to retrofit the plant at our stations the company will likely want to see a huge rise in profits before considering it, both the coal stations we own were both built in the 1960s and only originally intened to have a 25 year life span. Both have been generating over 40 years and thats very similar to a lot of the coal stations about. Drax is one of the newer ones and is more efficient than any of the ones from the 60s as it was only built 20 years ago, rather than 30 or 40. Heavy investment in supercritical boilers + CCS technology would be needed, and this will make it likeley that electricity prices will go up to provide the investment needed.
New nuclear stations will cover baseloading for the UK, but the problem with them is they're not flexible. For example, a peak in demand at dinner time when people cook, boil the kettle etc can be met by increasing production at a coal station, or even bringing a unit on from a coal station. Nuclear stations aren't as flexible from what i've been led to believe by people at work.
Fitting CCS to new supercritical boilers is also expensive, and they're then still only 60% efficient, using Gas (from Googling it). Googling brought up about 38% efficient for Coal at the moment in America, only a quick google though. CHP is a good idea as most of the efficiency losses are from heat as you have to condense the steam to pump it back to the boilers. Supercritical technology has been about for a while, not many people have taken advantage of it in the UK so far, I'm presuming that the cost of replacement outweighs the reductions in costs from increased efficieny. Also the loss of money while the plant is modified. Takes a while to sort as the boilers are hung from the roof and are 160ft-ish tall
ON TOPIC: Until technology increases the capacity of batteries, or decreases the weight and charging time it doesn't look viable for most day to day uses. I'd be fine for my job but there are many people who travel and it would be impossible for them to use them.
