It has been another record year for renewable energy, despite the Covid-19 pandemic and rising costs for raw materials around the world, according to the International Energy Agency (IEA). About 290GW of new renewable energy generation capacity, mostly in the form of wind turbines and solar panels, has been installed around the world this year, beating the previous record last year. On current trends, renewable energy generating capacity will exceed that of fossil fuels and nuclear energy combined by 2026.

A pair of sleek, winged machines are "flying" - or at least swimming - beneath the dark waters of the Faroe Islands in the North Atlantic. Known as "sea dragons" or "tidal kites", they look like aircraft, but these are in fact high-tech tidal turbines, generating electricity from the power of the ocean. The two kites - with a five-metre (16ft) wingspan - move underwater in a figure-of-eight pattern, absorbing energy from the running tide. They are tethered to the fjord seabed by 40-metre metal cables.

Retrofitting an existing masonry cavity walled building with a green or living wall can reduce the amount of heat lost through its structure by more than 30%, according to new research.

The world will need to shut down nearly 3,000 coal-fired power plants before 2030 if it is to have a chance of keeping temperature rises within 1.5 Celsius, according to research by climate think tank TransitionZero.

Some Eastern European countries dependent on coal will face tough decisions as they transition to cleaner forms of energy. A Platform Initiative in Support of Coal Regions in Transition for Western Balkans and Ukraine provides countries in the region decades of expertise and the tools and financing necessary to accelerate the transition away from coal.

Portugal shut down its last remaining coal plant over the weekend, ending the use of the polluting material for electricity generation and becoming the fourth country in the European Union to do so.

Nuclear power finds itself caught between cheaper sources of carbon-emitting energy and heavily subsidized clean power sources like wind and solar.

Agrivoltaics, growing crops under solar panels, increases the production of both, and Jack's Solar Garden farm is showing how it's done.

The world’s most forbidding deserts could be the best places on Earth for harvesting solar power — the most abundant and clean source of energy we have. Deserts are spacious, relatively flat, rich in silicon — the raw material for the semiconductors from which solar cells are made — and never short of sunlight. In fact, the 10 largest solar plants around the world are all in deserts or dry regions.

The 13,000-acre Mammoth Solar farm will span two northern Indiana counties.

A project to replicate the sun’s energy process has shown promise after its first year of experiments, with a comparatively low-cost approach.

As EV sales increase, supplies of lithium may get tight. So some companies are incorporating cells with sodium, which provides almost as big a charge.

Long-shot money is flowing into start-ups that seek the energy of the stars. Driving the investments is a rising alarm about global warming.

Next year, Danish wind turbine manufacturer Vestas will put up a gargantuan prototype - a 15-megawatt (MW) wind turbine that will be powerful enough to provide electricity to roughly 13,000 British homes. It will be the biggest such turbine in the world, though potentially not for long. Wind turbines just keep getting bigger - and it's happening faster than almost anybody predicted.

The photovoltaic effect of ferroelectric crystals can grow by creating crystalline layers of barium titanate, strontium titanate and calcium titanate.

NASA has devised a plan to ensure the volcano underneath Yellowstone remains dormant in order to prevent a possible natural disaster.

Ignition is a key process that amplifies the energy output from nuclear fusion and could provide clean energy and answer some huge physics questions. A new experiment appears to have triggered ignition for the first time, at the National Ignition Facility (NIF) at Lawrence Livermore National Laboratory in the US, recreating the extreme temperatures and pressures found at the heart of the Sun.

With a number of recent breakthroughs, the race is on to prove that nuclear fusion is not only possible, but integral to a clean energy future

California is closing Diablo Canyon, which is a source of clean power, as it faces an energy emergency and a mandate to eliminate carbon emissions. Why?