IT

Pioneering technology could cost as little as £4 and can be fitted into existing iPhone 6 models

Open Energi's David Hill makes the case for turning the capital's massive Old Oak Common and Park Royal redevelopment into an exemplar of smart city thinking

New Project Sunroof aims to help homeowners calculate potential savings from fitting solar PV

Designed for finding lost items, people and pets, the LightBug tag could also reduce your energy usage

Swedish app developer partners with bank to help mortgage customers slash up to 10 per cent off energy bills

Its "energy as a service" platform helps utilities add demand response, smart metering quickly without minimal upfront investment

BusinessGreen talks to eBay's global director of social innovation about the growing voice of businesses calling for action on climate change

Billionaire argues both carbon pricing policies and increased clean tech R&D spending will help tackle escalating climate risks

Google partners with tech start-up Aclima to deliver hyper-local air quality information