New thermal photovoltaics reflect 99% of the energy they can't convert to electricity. They could help cut the price of storing renewable energy as heat.

Rather than having skyscraper windows reflect light and waste energy, transparent solar cells could turn them into power sources for buildings.

If ships could create their own fuel from seawater, they could remain in continuous operation. Researchers say a catalyst could make it a reality.

Researchers have created a shadow-effect energy generator that can use the contrast between shadows and light to generate electricity.

"Our perovskite solar cells show no thermal degradation even at 200 degrees Celsius (390 degrees Fahrenheit) for over three days..."

Solar panels with fractal designs inspired by nature could be more energy efficient while also cutting stress, researchers say.

New research on Russian doll-like nanotubes could pave the way for their use in solar panels.

New maps outline the threat hydropower dams pose to fish habitats worldwide. The maps could help with decision-making around new dams.

Perovskites are in line to replace pricey silicon solar cells, but they break easily. Good news: a little heat can completely heal cracks.

The next generation of greenhouses may be fully solar-powered, researchers say. But it might not work as well in chillier climates.