The Department for Transport has launched a consultation on fitting different number plates to EVs and other zero-emissions vehicles as part of its £1.5 billion Road to Zero strategy, which aims to cut the country’s CO2 emissions by 2040
Consultation document on the introduction of green number plates for ULEV's
See what people have to say on twitter about green number plates
Clearly the idea is to give more incentives to drivers and help rapidly increase the sales of Electric vehicles which can often be more expensive to purchase than the petrol versions of the same vehicle. Ideas include discounted or even free parking in towns and cities and also usage of dedicated lanes and "clean air zones" which are being planned to be introduced in some parts of the country.
Here at CarReg, having looked at the 3 designs we feel the 2nd design with the green band is probably the best (similar to the blue banded number plates for the regional flags which are permitted on UK plates). These would then look more alike traditional existing designs (Yellow on Rear, White on Front) of other vehicles but would also stand out enough to show the vehicle was electric. 
However we are not sure that just green "private number plates" are the answer to the climate crisis. We feel the material that the actual number plate is made from needs addressing also, from the current acrylic/plastic material they are made from to a more environmentally friendly recyclable material.
Ideas for Private Number plates to enhance the EV (Electric Vehicle), ULEV (Ultra Low Emissions Vehicle) ZRO (Zero emmission) terminology would be: MY__ZRO or MY__ZER
