Tag Archives: renewable energy

Artificial Forest for Solar Water-Splitting

By Guest PostJune 14, 2013Environmentartificial forest, atmospheric carbon dioxide, berkeley lab, bin liu, carbon neutral, chloroplasts, chong liu, fuel conversion, green plants, hao ming chen, hydrogen generating photocathode, jinyao tang, nanowire heterostructures, natural photosynthesis, ohmic contact, oxidation half reactions, oxygen molecules, peidong yang, photosynthesis, reduction, renewable energy, silicon, solar, solar water splitting, stable semiconductors, titanium oxide, z scheme

Berkeley Lab Researchers Report First Fully Integrated Artificial Photosynthesis Nanosystem

In the wake of the sobering news that atmospheric carbon dioxide is now at its highest level in at least three million years, an important advance in the race to develop carbon-neutral renewable energy sources has been achieved. Scientists with the U.S. Department of Energy (DOE)’s Lawrence Berkeley National Laboratory (Berkeley Lab) have reported the first fully integrated nanosystem for artificial photosynthesis. While “artificial leaf” is the popular term for such a system, the key to this success was an “artificial forest.”

“Similar to the chloroplasts in green plants that carry out photosynthesis, our artificial photosynthetic system is composed of two semiconductor light absorbers, an interfacial layer for charge transport, and spatially separated co-catalysts,” says Peidong Yang, a chemist with Berkeley Lab’s Materials Sciences Division, who led this research. “To facilitate solar water- splitting in our system, we synthesized tree-like nanowire heterostructures, consisting of silicon trunks and titanium oxide branches. Visually, arrays of these nanostructures very much resemble an artificial forest.” (more…)

Renewable News

By Guest PostDecember 10, 2012Environmentbatteries, carbon dioxide, computer model, cory budischak, electric grid, electricity demands, electricity generation capability, electricity sources, external cost, gigawatt, greenhouse gas, human health effects, hydrogen tanks, natural gas, new jersey, pjm interconnection, power grid, power sector, reduction, renewable energy, renewable news, solar power, storage, storage mechanisms, storage medium, united states, university of delaware, willett kempton, wind, wind power

Wind, solar power paired with storage could be cost-effective way to power grid

Renewable energy could fully power a large electric grid 99.9 percent of the time by 2030 at costs comparable to today’s electricity expenses, according to new research by the University of Delaware and Delaware Technical Community College.

A well-designed combination of wind power, solar power and storage in batteries and fuel cells would nearly always exceed electricity demands while keeping costs low, the scientists found. (more…)

IBM Teams With ESB to Develop an Electric Vehicle Smart Charging IT System in Ireland

By Guest PostOctober 1, 2012Technologyaction plan, allan schurr, billing cost, charge points, charging, cloud computing, co2 emission, electric vehicle, electricity provider, energy policy, esb ecars, esb network, European Union, ev driver, financial insight, for, green energy, greenhouse gas, ibm, industry participants, ireland, it system, jobs, legislation, pat odoherty, pollution level, public, reduction, renewable energy, richard bruton, scalable level

ARMONK, N.Y. and DUBLIN – 01 Oct 2012: IBM today announced that it has teamed with ESB ecars to implement a fully integrated smarter charging IT system that will help manage electric vehicle public charge points, which are being rolled out across Ireland by ESB ecars. Together the companies will add a layer of intelligence and convenience to the charging process, allowing EV drivers to access, charge and pay, using an identification card. Additionally, this project will provide utilities with access to energy usage data that can help improve smart grid operations, reduce power strain during peak charging times, and ensure reliable energy distribution to customers.

With approximately 1,000 public charging-points currently available, ESB Networks is on track to deliver one of the largest integrated and operational electric vehicle infrastructures in Europe. ESB Networks will use IBM’s Intelligent Electric Vehicle Enablement Platform to provide the services needed to operate and manage the charge-points installed throughout Ireland. (more…)

Photovoltaics from Any Semiconductor

By Guest PostJuly 29, 2012Sciencealex zettl, berkeley lab, cadmium telluride, coins, copper oxide, crystals of silicon, electric field, electrical current, feng wang, metal oxides, non-toxic, onur ergen, p n junctions, phosphides, photovoltaics, renewable energy, semiconductor, sfpv, solar cells, solar energy, steven byrnes, sulfides, will gannett, william regan

Berkeley Lab Technology Could Open Door to More Widespread Solar Energy Devices

A technology that would enable low-cost, high efficiency solar cells to be made from virtually any semiconductor material has been developed by researchers with the U.S. Department of Energy (DOE)’s Lawrence Berkeley National Laboratory (Berkeley Lab) and the University of California (UC) Berkeley. This technology opens the door to the use of plentiful, relatively inexpensive semiconductors, such as the promising metal oxides, sulfides and phosphides, that have been considered unsuitable for solar cells because it is so difficult to tailor their properties by chemical means.

“It’s time we put bad materials to good use,” says physicist Alex Zettl, who led this research along with colleague Feng Wang. “Our technology allows us to sidestep the difficulty in chemically tailoring many earth abundant, non-toxic semiconductors and instead tailor these materials simply by applying an electric field.” (more…)

A New Way of Looking at Photosystem II

By Guest PostJune 14, 2012Sciencealgae, angstroms, bacteria, berkeley lab, carbon dioxide, catalytic cycle, critical formation, cryogenic freezing, electrochemical energy, electrons, femtosecond timescale, femtosecond x ray pulses, green, green plants, hydrogen atom, hydrogen ions, jan kern, junko yano, knowledge, lcls, microcrystals, nicholas sauter, oxidation states, oxygen molecules, paul adams, photooxidation, photosynthesis, photosystem ii, protein crystallography, proteins, protons, renewable energy, resolution, slac, solar energy, synchrotron radiation, terabytes of data, uwe bergmann, vittal yachandra, water, xray diffraction, xrays

Berkeley Lab and SLAC Researchers Study Key Protein Complex Crucial to Photosynthesis

Future prospects for clean, green, renewable energy may hinge upon our ability to mimic and improve upon photosynthesis – the process by which green plants, algae and some bacteria convert solar energy into electrochemical energy. An artificial version of photosynthesis, for example, could use sunlight to produce liquid fuels from nothing more than carbon dioxide and water. First, however, scientists need a better understanding of how a large complex of proteins, called photosystem II, is able to split water molecules into oxygen, electrons and hydrogen ions (protons). A new road to reaching this understanding has now been opened by an international team of researchers, led by scientists at the U.S. Department of Energy (DOE)’s Lawrence Berkeley National Laboratory (Berkeley Lab) and SLAC National Accelerator Laboratory.

Using ultrafast, intensely bright pulses of X-rays from SLAC’s Linac Coherent Light Source (LCLS), the research team produced the first ever images at room temperature of microcrystals of the photosystem II complex. Previous imaging studies, using X-rays generated via synchrotron radiation sources, required cryogenic freezing, which alters the samples. Also, to catalyze its reactions, photosystem II relies upon an enzyme that contains a manganese-calcium cluster that is highly sensitive to radiation. With the high-intensity femtosecond X-ray pulses of the LCLS, the research team was able to record intact images of these clusters before the radiation destroyed them. (more…)

Clean Energy From CO2?

By Guest PostMay 23, 2012Environmentcarbon dioxide, cpg, crust, cycle, deane morrison, earth, electricity, fossil fuels, geologic formation, geothermal heat, geothermal systems, global warming, green future, heat mining company, hydrofracking, impermeable rock, international space station, jimmy randolph, martin saar, mobility, renewable energy, supercritical, thomas kuehn, underground storage, united states, university of minnesota, villain co2

Global warming villain CO₂ may have a surprisingly green future

The next frontier in the search for renewable energy lies less than two miles from where you are now.

Unless you’re reading this on the International Space Station.

Geothermal heat a mile or two deep in Earth’s crust is a potential source of energy that could be tapped by an unlikely carrier: carbon dioxide (CO₂), the central villain in global warming. That energy, unlike solar and wind, could be easily turned on and off without the intermediate step of being stored in a battery. And it would be constant and reliable. (more…)

Berkeley Lab Study Shows Significantly Higher Potential for Wind Energy in India than Previously Estimated

By Guest PostMarch 29, 2012Environmentamol phadke, berkeley lab, China, electricity, gw, India, jayant sathaye, julie chao, mnre, potential, ranjit bharvirkar, renewable energy, united states, western india, wind energy, wind power

A new assessment of wind energy in India by Lawrence Berkeley National Laboratory has found that the potential for on-shore wind energy deployment is far higher than the official estimates— about 20 times and up to 30 times greater than the current government estimate of 102 gigawatts. This landmark finding may have significant impact on India’s renewable energy strategy as it attempts to cope with a massive and chronic shortage of electricity.

“The main importance of this study, why it’s groundbreaking, is that wind is one of the most cost-effective and mature renewable energy sources commercially available in India, with an installed capacity of 15 GW and rising rapidly,” says Berkeley Lab scientist Amol Phadke, the lead author of the report. “The cost of wind power is now comparable to that from imported coal and natural gas-based plants, and wind can play a significant role in cost effectively addressing energy security and environmental concerns.” (more…)

Aquatics Center: Brown Dives into Solar Energy

By Guest PostFebruary 12, 2012Environmentaquatics center, boston, brown, chris powell, electricity from sunlight, environmental initiative, generate, glycol, hudson, hybrid, hybrid panels, hybrid solar panels, katherine moran coleman aquatic center, michael intrieri, photovoltaic strip, power, renewable energy, rhode island, roof, solar energy, solar installation, sundrum solar, sunlight solar energy, sustainable energy, thermal energy, thomas p, tip o neill, united states

The 168 rectangular panels on the roof of the Katherine Moran Coleman Aquatic Center will generate enough power to keep the lights on and enough thermal energy to heat the million-gallon pool. The center, due to open April 13, will be Rhode Island’s first hybrid (heat and power) solar installation — also the largest in the nation and the first on a college campus.

Brown is diving into solar energy. (more…)