Solar cells are an increasingly important source of renewable energy, but there’s still room for improvement. Stanford engineers have now developed a pyramid-shaped lens that can focus sunlight ...

The EER or Energy Efficiency Ratio measures the cooling efficiency of an air conditioner or HVAC system, determined by ...

The new EU energy label for smartphones, effective today, brings transparency to device efficiency, durability, and ...

🌍💡 From smart thermostats to solar panels, these energy-efficient solutions are game ... you need Chamber discovered deep within Great Pyramid of Giza could be missing piece of the puzzle ...

The US Energy Department says it’s rolling back long-standing efficiency standards for appliances, which advocates are calling a clear violation of the law. Continuing the Trump administration ...

It boosts the market for energy-efficient products and benefits companies that design appliances that earn the label. A home that decides to buy Energy Star products can save $450 annually on ...