One of the most significant contributors to an organisation’s energy consumption is IT, and the data centre in particular. The Carbon Reduction Commitment (or CRC Energy Scheme) has made it more important than ever that data centres are built to a high specification for maximum energy efficiency. The UK’s first mandatory carbon trading scheme, it affects around 5,000 organisations, and is compulsory for large organisations using more than 6,000 MWh/year of half-hourly metered electricity—or around £500,000 in electricity bills.