The hidden environmental cost of AI data centers
As data centers multiply to meet AI demand, they're straining power grids, draining water supplies and reshaping the land and air around them.
The environmental impact of AI data centers is often overlooked, yet these facilities consume vast amounts of energy, water and land to support the growing demand for digital services. With over 2.5 billion queries daily for just ChatGPT, it's clear that data centers have a significant physical footprint. If data centers were a country, they would rank as the 11th largest electricity consumer globally, according to UN researchers.
Data centers are expanding rapidly, consuming increasing amounts of electricity and water. In Frankfurt, Germany, data centers consume nearly half of the city's electricity, while in Dublin, the figure is even higher at double the average. Projections suggest that data center electricity consumption will double by 2030, reaching about 945 terawatt-hours, comparable to Japan's annual consumption.
This surge in energy use is largely due to the continuous operation of servers, routers and internet-connected devices within these warehouses. Cooling systems must work around the clock to prevent overheating, consuming substantial amounts of water. In northern Virginia, for instance, over 300 data centers use nearly 2 billion gallons of water annually, enough to supply a town of 10,000 to 50,000 people.
However, data centers are not without sustainable solutions. Some facilities are powered by renewable energy, such as on-site solar or wind, which can reduce their reliance on fossil fuels. Others employ innovative cooling methods, like immersion or closed-loop systems, which can cut freshwater usage by up to 70%. Furthermore, some data centers are capturing waste heat from their operations to heat nearby homes and businesses, a process known as thermal energy networks, potentially reducing power demand by up to 30%.
Despite these efforts, data centers still pose environmental challenges. The majority of data centers worldwide still rely on fossil fuels for power, emitting large quantities of CO2. In the US, over 50% of data centers are powered by fossil fuels, contributing over 105 million tons of CO2 annually. Moreover, the construction of new data centers can delay the retirement of older coal plants, prolonging their emissions.
Additionally, the expansion of data centers often involves converting natural or agricultural lands into industrial zones, threatening local biodiversity and disrupting ecosystems. In Hattersheim, Germany, a green space reserved for agriculture was converted into a data center campus, causing ecological damage. Lastly, the construction of data centers may also lead to increased air pollution due to the use of backup diesel generators, which release harmful pollutants like nitrogen oxides, contributing to health issues and economic costs for nearby communities.
Written by urgent.news from DW English (Top Stories)'s reporting — not their text. Machine-written — may contain errors; check the original before relying on it.
