Half of our *electicity* can at times be provided by renewables, but not reliably and sustainably so, and also that doesn't account for the still vast amounts of fossil fuels being burnt on transport and for heating. We are nowhere near 50% of energy needs being met by renewables.
Our total electricity generation was 86.9 Terawatt hours in Q1 2019 of which some 31.1 came from renewables.
However, our total gas demand was 283 TWh - some of which went into the 86.9 above, but only a small part of it. Most of our gas consumption goes on heating.
To get anywhere near zero carbon, at a guess we'd need something like 10 to 15x the current renewables capacity. What percentage of cars still rely on petrol or diesel for most or all of their miles?
It wasn’t an accurate comment and more of an overview but you’ve proven my point that we drastically need to do more and quickly.