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Mayors of cities from London to Melbourne are seeking to reduce the burden of data centres on electricity and water

City leaders have announced that mayors of 40 cities, including London and Phoenix, have agreed to collaborate to reduce the strain on the electricity grids and water supplies, as well as the local communities. The 'global' surge in computing power is driving billions of dollars of investment into new sites. This has sparked protests from countries like the United States, South Africa, and Britain. The Global Urban Data Centres Pact is set to be unveiled on Tuesday during London Climate Action Week. It aims to establish standards that will ensure data centres are more efficient and use all resources efficiently.

The rules will be tailored to the local conditions - cooling requirements in Iceland are different from those in Manila - but the mayors say the framework should guide planning and permitting decisions as well as negotiations between companies and governments.

Melbourne Lord Mayor Nicholas Reece stated that around 50 major data centers already operate in the City and are projected to account for approximately 10% of local energy demand by 2030, and up to 20% by 2040.

Reece stated that "data centres are the largest thing to hit the energy grid since air conditioners in the 1950s... Where the rollout of the air conditioners took decades, this happens in just a few years."

He said that the centres could use up to 20 billion litres a year. This is equivalent to about 4% of the water supply in the city.

"Race to the Bottom"

Reece stated that investment in data centres is happening at a "breakneck pace", which outpaces regulation. This puts cities at risk of "a race to the bottom", as governments compete for investment and sometimes ignore environmental scrutiny.

Phoenix Mayor Kate Gallego stated that the city and its surrounding area had 225 data centres planned or existing, with plans to double electricity consumption.

Gallego stated that utilities which experienced decades of steady growth are now experiencing growth comparable to the last century in just a few years, driven by AI-related computing requirements.

She said that the demand for electricity was unprecedented.

She said that this has led to disputes centered on noise, land usage and safety risks associated with battery storage. There are also broader concerns regarding the installation of infrastructure in residential areas.

London Mayor Sadiq khan, on the other hand, stated in a statement, that AI and digital infrastructure will play "a significant role in the future success?of cities across the globe... Residents are entitled to expect growth be managed responsibly".

According to the World Economic Forum, data centres are responsible for 2.5% - 3.7% of greenhouse gas emissions globally. This is more than aviation. Their electricity consumption has been increasing faster than global power consumption.

Barcelona, Chennai, and Boise, in the U.S. State of Idaho, are among the cities that have signed up. C40 Cities coordinates the initiative, which is a network of more than 100 of the largest cities around the world working together to combat climate change.

Reece stated, "We don't want the smart city race to destroy the planet." (Reporting and editing by Emelia Sithole Matarise; reporting by Simon Jessop)

(source: Reuters)