A solar cell that does double duty for renewable energy

“In the quest for abundant, renewable alternatives to fossil fuels, scientists have sought to harvest the sun’s energy through “water splitting,” an artificial photosynthesis technique that uses sunlight to generate hydrogen fuel from water. But water-splitting devices have yet to live up to their potential because there still isn’t a design for materials with the…

Utilities benefit from renewable energy growth

“Even at a glance, NextEra Energy’s (NYSE: NEE) third-quarter results are impressive. Earnings per share grew 18 percent, thumping management’s long-term compound annual growth target of 6 to 8 percent. That keeps the utility on track for another 12 to 14 percent dividend boost early next year. But the best news is inside that performance.…

PG&E’s record-breaking battery proposal wins approval from regulators

“California utility regulators approved Pacific Gas & Electric’s proposal to build the two largest battery systems in the world. The 4-1 vote marks a landmark development in California’s quest to decarbonize its electrical system by shifting from natural gas to non-emitting sources for flexible power. “Not only will this help California integrate solar and reduce…

Collection and Use of Solar Resource Data for Solar Energy Applications

Designing, financing, and operating successful solar heating, concentrating solar power, and photovoltaic systems requires reliable information about the solar resource available and its variability over time. In the past, seasonal and daily variability has been studied and understood; however, with new solar technologies becoming more important in energy supply grids, small time-scale effects are critical…

Portland General Electric to develop ‘smart grids’ in 3 Oregon towns

“The Oregon towns of Hillsboro, Portland and Milwaukie will make up PGE’s Smart Grid Test Bed, where the utility will leverage advanced communications capabilities and distribution system upgrades to deliver demand response signals to customers using a range of smart-home technologies. Almost all of the utility’s customers have been using smart meters since 2010.” Click…

Ancient pigment can boost energy efficiency

“A color developed by Egyptians thousands of years ago has a modern-day application as well – the pigment can boost energy efficiency by cooling rooftops and walls, and could also enable solar generation of electricity via windows. Egyptian blue, derived from calcium copper silicate, was routinely used on ancient depictions of gods and royalty. Previous…

The Magic Kingdom is going green

“Before the end of 2018, Disney will flip the switch on a sprawling 50-megawatt solar power facility composed of more than a half-million solar panels, just outside Disney’s Animal Kingdom. The move is aimed, in part, at helping Disney achieve its larger plan to reduce its net greenhouse gas emissions 50 percent worldwide by 2020,…

We gotta get a better battery. But how?

“If batteries are to play their part, they must cost less than one-fifth the likely minimum cost of lithium-ion batteries (around $100 a kilowatt hour). To solve that problem, material scientists have turned to alternatives to lithium-ion, creating heavily capitalized companies like Aquion, which manufactured salt-water batteries, or LightSail, which wanted to store energy as…
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