Companies should stop scrambling for PUE and concentrate on extending the lifespan of their facilities, according to Charles-Antoine Beyney, president of the first “sustainable” data centre in France

The IT industry believes that smart technology can reduce CO2 emissions, but Peter Judge wants to know: did they ask the CIOs whether they actually have the time and influence to do the job?

Critics are trying to use hacked emails to discredit climate change scientists - but however that campaign plays out, UK companies will still have to deal with carbon credits next year, says Peter Judge

New data centres are more efficient than their predecessors, but they have to be reliable too. Peter Judge asks - what happens when the need for reliability clashes with the demand for efficiency?

The age-old debate over whether DC versus AC power is best looks set to continue, thanks to the potential green benefits of DC in data centres, says Chris Gonsalves

A year after the EU issued its Code of Conduct for data centres, lack of participation could damage the autonomy of the industry, says TelecityGroup’s Rob Coupland

Is it reasonable to ask IT companies to compare their carbon emissions against a 1990 baseline? Green campaigners want to see it, but Peter Judge is not so sure

You can argue whether to replace your IT every three years or ever five years. But, says Peter Judge, if you dispose of your kit in the developing world, maybe you shouldn’t replace it at all!

Are solar-powered phones just the latest consumer gadget - or are they a lifeline for communications in the developing world? Both at once, says Peter Judge

There’s plenty of competition for VMware in making virtualised data centres, despite its strong lead. Is now the time to switch to Hyper-V or XenServer, asks Cameron Sturdevant?