In any conventional silicon-based solar cell, there is an absolute limit on overall efficiency, based partly on the fact that each photon of light can only knock loose a single electron, even if that photon carried twice the energy needed to do so.

The UN’s Sustainable Development Goal 7 (SDG 7) aims to ensure access to affordable, reliable, sustainable, and modern energy for all by 2030. 

Mixing microbes with carbon nanomaterials could help the transition to renewable energy. 

What’s good for one is not always best for all.

Solitary wind turbines produce the most power when pointing directly into the wind. But when tightly packed lines of turbines face the wind on wind farms, wakes from upstream generators can interfere with those downstream. Like a speedboat slowed by choppy water from a boat in front, the wake from a wind turbine reduces the output of those behind it.

Pointing turbines slightly away from oncoming wind – called wake-steering – can reduce that interference and improve both the quantity and quality of power from wind farms, and probably lower operating costs, a new Stanford study shows.

“To meet global targets for renewable energy generation, we need to find ways to generate a lot more energy from existing wind farms,” said John Dabiri, professor of civil and environmental engineering and of mechanical engineering and senior author of the paper. “The traditional focus has been on the performance of individual turbines in a wind farm, but we need to instead start thinking about the farm as a whole, and not just as the sum of its parts.”

Read more at Stanford University

Converting the entire U.S. power grid to 100 percent renewable energy in the next decade is technologically and logistically attainable, and would cost an estimated $4.5 trillion, according to a recent analysis by the energy research firm Wood Mackenzie.

A newly developed material that is so perfectly transparent you can barely see it could unlock many new uses for solar heat.

New research at The University of Texas at Austin shows that injecting air and carbon dioxide into methane ice deposits buried beneath the Gulf of Mexico could unlock vast natural gas energy resources while helping fight climate change by trapping the carbon dioxide underground.

Scientists from the Department of Energy’s SLAC National Accelerator Laboratory and Stanford University have taken the first images of carbon dioxide molecules within a molecular cage ­­– part of a highly porous nanoparticle known as a MOF, or metal-organic framework, with great potential for separating and storing gases and liquids.

Global energy use could increase by as much as 58 percent by 2050 as communities and industries use more air conditioning to cope with rising global temperatures, according to a new study published in the journal Nature Communications.

The world is dependent on energy both for human wellbeing and society's continued development.