Andrew Wright, Ofgem's former interim chief executive said that richer customers would be able to "pay for a higher level of reliability," while other, less well-off households would be left without power.
"At the moment everyone has the same network — with some difference between rural and urban — but this is changing and these changes will produce some choices for society," Mr. Wright told a conference.
"There will be some new features in the market which may see some choose to pay for a higher level of reliability. One household may be sitting with their lights on, charging their Tesla electric car, while someone else will be sitting in the dark."
View the world from a Tesla with self-driving hardware https://t.co/ytXoF1P6Aa— Tesla (@TeslaMotors) November 19, 2016
Following reports of Mr. Wright's comments in the press, energy regulator Ofgem, insisted he was speaking in his personal capacity and not as an Ofgem representative.
"Ofgem is fully committed to delivering secure supplies for all consumers now and in the future. This is our number one priority. This is why we have driven up network reliability standards and worked closely with Government to ensure secure energy supplies," a spokesperson said.
"Mr. Wright was talking at a university conference in a personal capacity and looking at possible issues that might or might not arise in 10-15 years."
Speaking in his personal capacity, Mr. Wright blamed the closure of British coal mines for the country's lack of "flexibility" and limited fuel capacity.