As I wrote last week, Britain now has a green tax exemption for shared (colocation) data centers. To qualify for a break that effectively cuts energy cost by ten percent, organisations have to promise to increase energy efficiency.
Unlike other business sectors, data centers don’t have a measurable output, so industry group TechUK convinced the Department of Energy and Climate Change to determine efficiency by cutting wasted energy. They agree to measure efficiency using the industry standard: PUE (power usage effectiveness).
Or did they?
The details are still being worked out, but PUE-rists got a small surprise at the meeting where TechUK explained the deal, which is known as a Climate Change Agreement. As it turns out, the mechanics of the deal means it doesn’t exactly use PUE.
To qualify for the tax break, an organisation has to use almost all its energy in the data center. That ...