This lens of this new camera acts like a solar panel. Click image to enlarge.
Image: Columbia University

Who needs batteries to power a camera? Engineers from Columbia University are working on a novel design in which the pixels of the camera not only capture an image, they also collect light as an energy source.

The engineers are researching a commonality between a typical camera and solar panels: photodiodes. Each device has always used photodiodes, but in different ways.

Engineers plan for the new camera to use photodiodes in both functions.

(more…)

This year is shaping up to be a very green for the American energy sector. U.S. power emissions are expected to fall to a two-decade low in light of the year of “de-carbonization”.

Bloomberg New Energy Finance reports that CO₂ emissions from the power sector should drop to their lowest levels since 1994.

The factors most connect to this decline include:

• The instillation of more renewables than ever before—with around 18 new GW coming online.

• A record year for coal retirements—forecasting 23GW to come offline.

• The burning of more natural gas in 2015 than ever before.

(more…)

Silicon is the common material used in solar cells and computer chips, but gallium arsenide is an alternative material with many advantages.
Image: YouTube/Stanford University

When we think of chips and solar cells, we think of silicon. However, silicon isn’t the only chip-making material out there.

Researchers from Stanford University are turning their attention away from silicon and are looking toward gallium arsenide to make faster chips and more efficient solar cells.

Gallium arsenide is a semiconductor material with extraordinary properties. Electrons can travel six times faster in gallium arsenide than in silicon, allowing for faster operation of transistors. Unfortunately, cost effectiveness is not one of gallium arsenide’s alluring properties—which has caused researchers to opt for the much cheaper and less effective silicon material.

One single wafer of gallium arsenide could cost up to $5,000, whereas the same size wafer of silicon costs only $5.

(more…)

ECS Executive Director Roque Calvo sits down with the National Renewable Energy Laboratory’s John A. Turner to talk about all things renewable energy and try to connect the dots between the science, our everyday lives, and the sustainability of the planet.

Listen to the first ECS Podcast below and download it for free! (Also available through the iTunes Store and RSS Feed.)

(more…)

The development could help lead to safe, efficient artificial photosynthetic systems that replicate the natural process of photosynthesis that plants use to convert sunlight, water, and carbon dioxide into oxygen and fuel in the form of carbohydrates, or sugars.
Source: Caltech

The Electrochemical Society’s Nate Lewis is leading some pioneering research at Caltech with the vision of efficient, affordable, and effective renewable energy sources.

Dr. Lewis, an active member of ECS since 1982, has designed a novel electrically conductive film – which has the potential to result in the development of devices that can harness sunlight to change water into hydrogen fuel.

(Take a look at his plenary lecture on sustainable energy technology he gave at a past ECS meeting.)

“We’ve discovered a material which is chemically compatible with the semiconductor it’s trying to protect, impermeable to water, electrically conductive, highly transparent to incoming light, and highly catalytic for the reaction to make oxygen and fuels,” said Dr. Lewis.

He and his team have developed a process that allows the solar-driven production of fuel to be performed with record efficiency, stability, and effectiveness.

(more…)

Annual U.S. solar PV installations saw a 30 percent increase in 2014 alone. (Click to enlarge.)
Source: GTM Research/SEIA

If you’re not excited about the promising potential of solar yet, you’re about to be.

According to a new report by GTM Research and the Solar Energy Industries Association (SEIA), solar is growing faster than all other sources of energy in the United States.

In the report U.S. Solar Market Insight 2014 Year in Review, GTM and SEIA were able to establish that solar is continuing its upward trend in the U.S. with an increase of 30 percent more photovoltaic installations than in 2013.

Not convinced yet? The analysts also paired solar against also forms of energy in their report. When compared to other non-renewable energy sources such as coal and natural gas, it showed equally impressive results.

(more…)

The results from this research show promise in the area of solar and biomass energy conversion.
Image: UW-Madison Chemistry Department

Two researchers are thinking outside of traditional research standards to develop a new approach to solar energy and biomass conversion.

Kyoung-Shin Choi, a professor of chemistry at the University of Wisconsin-Madison, and his postdoctoral researcher Hyun Gil Cha are looking for a whole new way to harness natural energy, and their technique is showing promise for future endeavors.

(more…)

By combining green wall technology and solar panels, researchers have been able to generate renewable energy during both night and day.
Image: University of Cambridge

Researchers from Cambridge University have developed what is being considered “the greenest bus shelter” by combining solar power and plant power.

The scope of this project is much more vast than simply powering a bus shelter. Researchers are looking at this development as a possible answer to affordable power generation solutions for developing countries.

“To address the world’s energy needs, we need a portfolio of many different technologies, and it’s even better if these technologies work in synergy,” said Dr. Paolo Bombelli of Cambridge University’s Department of Biochemistry.

The bus shelter has the potential to power itself during both night and day times by harvesting the natural electron by-product of photosynthesis and metabolic activity, thus creating electrical current.

(more…)

In an effort to promote the use of alternative energy, the first solar-powered plane is well on its way to making its round-the-world tour.

After 13 year of invention and ingenuity, Swiss pilots Piccard and Andre Borschberg are beginning preparations to launch the tour in less than a week.

(more…)

Casey Emilius, ECS’s Meetings Coordinator, spotted an article in Inhabitat on an amazing feat in student ingenuity out of Nigeria.

College student Segun Oyeyiola has transformed a Volkswagen Beetle into a wind- and solar- powered car with just $6,000. By using mostly scrap parts donated by friends and family, Oyeyiola was able to keep costs down and skyrocket the renewable efficiency of the car.

The car is fortified by a strong suspension system to hold the weight of the solar panel on the roof and the wind turbine under the hood – which takes advantage of the airflow produced by the car while it’s in motion.

(more…)