Solar power is one of the best-known sources of renewable energy, but it is still only responsible for 3 percent of global electricity. What's keeping it back and how can it further develop?

The combination of solar power generation and agriculture - agrovoltaics - comes with benefits and problems. Can a new design generate electricity and increase crop yields?

Energy resources exist in different forms - some exist as stocks and are exhaustible, others exist as flows and are inexhaustible. The effects of climate change, and the impact that greenhouse gas emissions have on the atmosphere, are ushering in a reassessment of where our energy supply comes from and, more importantly, how sustainable it is.

Civic technology helps communities put power into their own hands - quite literally. New open source technologies can provide powerful tools to those looking to set up local renewable energy grids.

Many rural off-grid communities would benefit hugely from being hooked up to a solar power system. But which areas are most suitable for solar power installation? And which are most in need? A new earth observation software is using artificial intelligence and satellite imagery to bring power to people more accurately, efficiently and faster than before.

The heat that reaches the Earth from space has long been used to generate electricity, but can the concept work in reverse?

Cheaper and thinner solar power cells could lead to more affordable and more accessible renewable energy - for more people. But does it also bring new challenges?

Beaming solar power from space to Earth has long been talked about in theory, but now the first steps are being taken towards making it a reality.

Installing solar panels tends to be a big commitment, often requiring what amounts to a small-scale home makeover. But now a startup has developed a new system for renters and homeowners who want both green power and convenience.