The study by Jonathan G. Koomey, published in 2008, examines the electricity consumption of data centers worldwide, focusing on historical trends and regional variations. The research estimates the electricity used by data centers from 2000 to 2005, using detailed data on server types, communications, and storage equipment. Key findings include: - **Growth in Electricity Use**: The total electricity used by data centers doubled from 2000 to 2005, with a 16.7% annual growth rate globally. This growth was primarily driven by the increase in the number of volume servers, contributing about 80% of the growth. - **Regional Analysis**: The US and Europe accounted for about two-thirds of the total electricity use, while the Asia Pacific region (excluding Japan) saw the highest growth, increasing by 23% annually. - **Power Consumption**: In 2005, direct electricity use by IT equipment in data centers represented about 0.5% of global electricity consumption, rising to 1% when cooling and power distribution are included. - **Future Projections**: The study forecasts that if current trends continue, data center electricity use will grow by 76% by 2010, with an average annual growth rate of about 12%. The research highlights the significant impact of data centers on global electricity consumption and underscores the need for more efficient practices and infrastructure improvements to address this growing energy demand.The study by Jonathan G. Koomey, published in 2008, examines the electricity consumption of data centers worldwide, focusing on historical trends and regional variations. The research estimates the electricity used by data centers from 2000 to 2005, using detailed data on server types, communications, and storage equipment. Key findings include: - **Growth in Electricity Use**: The total electricity used by data centers doubled from 2000 to 2005, with a 16.7% annual growth rate globally. This growth was primarily driven by the increase in the number of volume servers, contributing about 80% of the growth. - **Regional Analysis**: The US and Europe accounted for about two-thirds of the total electricity use, while the Asia Pacific region (excluding Japan) saw the highest growth, increasing by 23% annually. - **Power Consumption**: In 2005, direct electricity use by IT equipment in data centers represented about 0.5% of global electricity consumption, rising to 1% when cooling and power distribution are included. - **Future Projections**: The study forecasts that if current trends continue, data center electricity use will grow by 76% by 2010, with an average annual growth rate of about 12%. The research highlights the significant impact of data centers on global electricity consumption and underscores the need for more efficient practices and infrastructure improvements to address this growing energy demand.