Royals' Sandringham House and Anmer Hall could save on bills according to energyhelpline.com who release report to coincide with The Crown on Netflix

According to new research by an energy comparison website royal residences Sandringham House and Anmer Hall could save tens of thousands of pounds in fuel bills if they switched to a new deal.

Prince William and Kate’s home at Anmer Hall and The Queen’s Sandringham House costs a combined £162,390 a year in energy bills, says energyhelpline.com

The energy switching and comparison site estimates the two estates could save up to £45,095 a year just by simply switching from a Standard Value Tariff.

Its findings on UK royal residences have been published in The Crown Fuels Report, released to coincide with the latest season of The Crown on Netflix, which provides a dramatic look into the life of the Royal Family, from behind-the-scenes conversations to the grandeur of their homes.

Unsurprisingly Buckingham Palace and Windsor Castle cost the most to run, racking up to an estimated £1,708,880 in energy bills between them each year.

Despite the age and size of the royal properties featured in the new series of The Crown, the royal household has implemented a decade-long energy management strategy, set to improve its energy efficiency by 40 per cent, achieving a 24 per cent reduction in heating and lighting last year.

Tom Lyon, director of energy at energyhelpline.com, said: “It’s fair to say that we all love watching The Crown and getting a look inside these grand homes and, considering the size and age of these impressive buildings, it’s perhaps little wonder that their energy bills will be equally grand.

“For example, some of Buckingham Palace’s radiators are over sixty years old, and the electrical cabling and heating date from the 1950s. But with measures like installing LED lighting which uses up to 86 per cent less electricity across the estate, it’s incredible to see the environmental and cost-savings being made.

“While the energy bills for these historic and large buildings will be eye-wateringly high, moving to a fixed rate deal in our own homes is one of the easiest ways to cut bills, with the average person saving a sizeable £289 per year by switching.”