Think of solar greenhouse heaters as a way to supplement existing heating systems. They're out there, but some assembly may be required.

A painting of a white city, clustered around pearly towers and skirted by leagues of brilliant solar panels, wraps the front ...

Space-based solar power startup Aetherflux has thrown its hat into the emerging market for orbital data centers, joining SpaceX, Amazon and others exploring ways to move energy-hungry artificial ...

UC Davis engineers have invented a Stirling engine that captures Earth’s escaping heat to generate power from the night sky.

The solar company Sunrun has managed to thrive despite President Trump’s crackdown on renewable energy, offering what it ...

Orbital solar power faces a $20 billion Cassiopeia build cost, giving you a clear view of where it could pay off first in practice. The design and ...

Seattle-area startup Hyviva is challenging the Tesla Powerwall with its hydrogen-fueled 'Lego brick' energy storage system.

The startup built a compact solar-battery combo that connects directly to key household appliances, is easy to plug in, and ...

Plug-in solar is rapidly expanding from Europe to the United States. As electricity prices rise, policymakers and consumers are embracing this renter-friendly technology as a path toward lower bills ...