Swiss-built Solar Impulse 2 takes off from Abu Dhabi on 35,000km journey powered only by the sun

Regulator to consult on three interconnectors that could provide 3.4GW of capacity by 2020, but will also consider ditching plans for Irish link

Series of delivery challenges still have to be address ahead of nationwide roll out of 53 million devices

Leader Natalie Bennett tells party conference 'continuing as we are is not an option'

Company signs deal with utility Endesa to deliver low-cost, mass-market vehicle-to-grid system

RenewableUK says feed-in tariff that supports industry must be shaken up to prevent installations tailing off

World's second largest flag-state for ships offering $53m of discounts to vessels undertaking energy efficiency improvements

Party's Nature Bill would extend the charge on plastic bags, starting in October, to all single-use bags

Yorkshire power giant acquires Billington Bioenergy to supply pellets as a green alternative to fossil fuel heating systems

Party rejects Lib Dem Energy and Climate Change Secretary's claim that nationalisation plans would harm progress of burgeoning green economy