Chinese engineers hope to beam solar power all the way from space back to Earth - but is the plan feasible?

Solar power trade-offs are a classic problem for clean energy solutions — the cheapest solar panels are usually the least efficient, because they don’t use complicated manufacturing processes.

Fluttering flags could be used to generate enough electricity to power the sensors of our future smart cities.

The USA currently ranks fourth in the world for solar power generation. But just how many solar panels is that? And who is using them?

Swedish researchers have developed a new breed of molecule which could make storing solar energy all the more efficient.

How to help hospitals with unreliable electricity supplies deliver life-saving treatment? A portable solar power system - that fits into a suitcase - has been doing just that.Lack of electricity and hospitals don't go well together: equipment cannot be operated, hospital communications are hindered, health workers are unable to provide appropriate and timely medical care.

Refugee camps often lack a steady supply of electricity, leaving refugees unable to charge their mobile phone, keep in touch with loved ones, and find out about important information and developments. Project Elpis is helping refugees stay connected, starting with refugee camps in Greece.

A Rwandan entrepreneur designed a solar-powered cart that charges phones and also serves as an internet hotspot. His ambitious goal is to provide employment opportunities and create up to 100,000 small businesses in Africa.

This organisation has been helping small and medium-sized enterprises go green through solar-diesel hybrid systems that require no upfront investment, giving them access to clean, renewable energy and helping them save some money in the process.