VPhase voltage optimisation, the Green Deal and the Energy Company Obligation What is the Green Deal? The Green Deal is the new government initiative aimed at supporting wider introduction of energy efficiency and renewable energy technologies into the home. It’s officially due to start on the 1st October 2012, but DECC has now confirmed that it not only expects the Green Deal to take up to 18 months to gain traction, but that Green Deal finance for consumers won’t be in place unti...