Energy wasted by the City of London’s offices could power over 65,000 homes


ENERGY being wasted every year by a few thousand office buildings across five UK cities could power over 100,000 homes and is costing businesses £60 million in unnecessary energy bills, says Green Alliance.

The scale is largest in the capital, where wasted energy is equivalent to the amount used to power over 65,000 homes, similar to the housing stock of the London Borough of Kingston upon Thames, costing the City’s businesses £35 million a year.

It also generates the same level of carbon emissions as 46,000 cars every year.

Caterina Brandmayr, senior policy analyst at Green Alliance, commented on the findings: “We all work for or know businesses that waste energy, whether it’s leaving lights on at night or wasting heat.

“It’s hard to see why dealing with this problem isn’t yet a priority, for companies in terms of cost savings or for the government in reaching its carbon targets.

“Digital technology is an obvious and inexpensive way to track and control energy use, cutting business costs and carbon emissions.

“Cities will play a leading role in cutting emissions and would be a great place to start the UK’s business energy efficiency revolution.”

The problem is widespread across other UK cities, with energy currently wasted by less than 3,300 office buildings in the cities of Manchester, Bristol, Leeds and Birmingham.

This could power over 42,000 homes while costing businesses across the four cities £25 million a year in unnecessary bills.

Most of the UK’s commercial buildings are energy inefficient and overall, energy consumption per square metre has flatlined since 2002.

A new report from the think tank Green Alliance, written for its Tech Task Force, highlights that better use of digital technology is one obvious solution, to save both money and carbon.

Examples of how it can help reduce energy use include smart sensors and algorithms, to track and modulate energy use in different parts a building.

Evidence shows that these technologies can vastly improve the energy performance of commercial buildings, with ‘substantial opportunities for immediate and easy gains.’

Steve Brambley, chief executive of GAMBICA, the Trade Association for Instrumentation, Control, Automation and Laboratory Technology, added: “There is no doubt that digital technology can be transformational in cutting the energy use in commercial buildings.

“We have the technology now to achieve this, what is missing is policy to make investment in energy efficiency a strategic priority for businesses.”

Artificial intelligence energy optimisation systems already on the market could cut energy use by as much as 14 per cent in commercial buildings with pay back in just a few months.

For the City of London, for example, businesses could save £13 million on their collective energy bill within a year.

Used alongside better business incentives, these technologies would lead to further energy efficiency, as already seen in Australia.

Over the past 13 years, the National Australian Built Environment Rating System has brought down energy use across Australia’s office buildings by nearly 40 per cent.

It requires annual disclosure of the energy performance of buildings and encourages the use of digital technologies, leading to year on year improvements.

If this level of progress was achieved in the City of London, its business energy bills would come down by a total of £367 million over the next decade.

The government’s adviser, the Committee on Climate Change, says cutting energy waste is vital to reach the UK’s net zero emissions by 2050 goal.

Although the government has committed to cut business energy use by 2030 by at least a fifth, existing policies ‘will not achieve it.’

Rodney Turtle, VP for public policy and government affairs at Schneider Electric, said: “Much greater ambition is needed to improve the energy performance of UK buildings, ensuring that new buildings are much more efficient and promoting extensive refurbishment of existing ones.

“Digital solutions to accelerate progress are already available and other countries are already racing ahead in making the most of these new opportunities.”

View the research here