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LED street lamps deliver 88% power saving in Japan
By Mike Hanlon
16:20 March 9, 2009 PDT
The cost and energy-efficiency of solid-state lighting are driving many new applications, and the recent installation of the first LED street lights in Osaka Prefecture in Japan, has already been found to provide an overall savings of 88% in electricity bills over the older high-pressure mercury lamps used elsewhere in the region. Each of the LED-based street lamps installed at a park on the Kizu River utilizes 36 cool white LEDs. The LED array generates 30 lux at a pole height of 4.5 meters, comparable to the brightness of mercury lamps, while using just 25 W of power per fixture. Read More
Oyster ocean power system to provide 1 GW by 2020
By Paul Evans
17:27 March 8, 2009 PDT
A new milestone for marine energy was achieved recently when UK based Wave and Tidal Technologies company Aquamarine Power Ltd signed a 1,000 MW (1 GW) Development Agreement with the renewable energy development division of Scottish and Southern Energy, Airtricity. Aquamarimes's Wave Power device, called Oyster, is a near shore hydroelectric wave power system. Still at the full scale prototype stage, the Oyster is based around a large movable buoyant barrier structure that is mounted on the seabed in depths of 10 – 12 m (33 – 40 ft) and pivots like a gate. Read More
Solar panel industry achieves Holy Grail - $1 per watt grid-parity
By Paul Evans
15:02 March 3, 2009 PST
Arizona based First Solar has achieved a major milestone in reducing the manufacturing cost for solar panels below the $1 per watt price barrier - the target necessary for solar to compete with coal-burning electricity on the grid or grid-parity. Using cadmium telluride (CdTe) technology in its thin-film photovoltaic cells, First Solar claims to have the lowest manufacturing cost per watt in the industry with the ability to make solar cells at 98 cents per watt, one third of the price of comparable standard silicon panels. The efficiency is in part due to a low cycle time - 2.5 hours from sheet of glass to solar module - about a tenth of the time it takes for silicon equivalents. Read More
LED streetlight smart management system undergoes testing
By Darren Quick
22:36 March 2, 2009 PST
Man’s primal fear of the darkness has helped spawn cities that are illuminated by massive numbers of streetlights – so many in fact that they represent almost 40 percent of a typical city’s electricity spending. While energy efficient LED streetlights have helped cut that figure considerably, the integration of intelligent management systems should help drive it down even further. LED exterior lighting manufacturer BetaLED is pursuing this avenue by pitting two leading forms of lighting control systems against each other in a test to discover which system produces the biggest reduction in operating and energy costs. Read More
Ocean-power installation up and running
By Paul Evans
13:54 March 2, 2009 PST
Renewable Energy Company Oceanlinx has re-deployed its full-scale wave energy conversion unit at Port Kembla in Australia. First deployed in 2005, the unit has been undergoing planned refurbishment and modifications for the past several months. The Oceanlinx wave generator, which is an Oscillating Water Column (OWC) device capable of generating peak power outputs of between 100 Kw and 1.5 MW, is one of six installations around the world currently being trialed. Read More
Shenzhen's solar-and-wind-powered skyscraper
By Karen Sprey
17:24 March 1, 2009 PST
Traditional architecture has been swept away and replaced by skyscrapers in China’s bid to modernize its cities and house its huge population and thriving business interests. Shenzhen in southern China’s Guangdong province has grown from a fishing village in the 1970s to a vibrant economic and financial centre - one of China’s most successful special economic zones. Now its skyline will be graced with a 49-storey solar-and-wind-powered tower designed by Austrian architecture firm Coop Himmelblau. The second skin of the building will be lined with photovoltaic cells and feature mechanisms to provide natural ventilation, reduce wind pressure, shade the interior from sun and display multimedia banners. Read More
Bottled water uses 2000 times more energy
By Mike Hanlon
16:52 February 28, 2009 PST
New research from the Pacific Institute estimates that bottled water is up to 2000 times more energy-intensive than tap water. Similarly, bottled water that requires long-distance transport is far more energy-intensive than bottled water produced and distributed locally. Indeed, when all the sums were done, it seems the annual consumption of bottled water in the U.S. in 2007 required the equivalent of between 32 and 54 million barrels of oil—roughly one-third of a percent of total U.S. primary energy consumption. Read More
Magenn floating wind generators take advantage of high altitude winds
By Loz Blain
16:15 February 26, 2009 PST
Wind power is notoriously flighty, particularly at ground level. Most turbine-on-a-post wind powered generators operate at around 20-40% of their rated generation capacity, simply because wind is intermittent and changes direction. But a generator situated 500-1000 feet above ground level would enjoy much more consistent strong wind - which is why the Magenn MARS system makes so much sense. It's a helium-filled rotating airship that spins in the wind on the end of a variable-length tether that also acts as a power transmitter, and it's expected to operate at more like 50% of its rated capacity. Each MARS system will be cheap and portable, which will make them extremely useful in rural, camping and emergency situations. A prototype has successfully been flown in North Carolina. A great idea that makes economic sense. Read More
New carbon capture technology promises cleaner power plants
By Darren Quick
13:41 February 26, 2009 PST
While we are constantly covering advances in alternative energies the hard fact is that we are heavily reliant on the burning of fossil fuels to meet our energy needs - and in the medium term, given that the political will and economic benefits of finding green solutions is only just starting to gather momentum, we are stuck with them. That means we have to clean them up. We recently covered the discovery by Indian scientists of naturally occurring bacteria that convert CO2 into calcium carbonate and could be used on existing fossil fuel fired power plants and now Colorado based company, ION Engineering, have developed technology that could be used in a similar way to economically remove CO2 and other contaminants from fossil fuel power plant emissions and raw natural gas. Read More
Solar wrapped batteries charge themselves
By Paul Evans
21:45 February 25, 2009 PST
From the files of “why don’t they make that?” comes a rechargeable battery with integrated solar cell charger. The “SunCast” prototype uses flexible solar cells from IFE and some C sized NiMH rechargeable batteries. Scientists at IFE have been experimenting with the production of flexible solar cells and were kind enough to send some samples to the “SunCast” battery designer Knut Karlsen. Read More
Flexible Thin Film Solar Cells to be printed like money
By Paul Evans
20:37 February 23, 2009 PST
Scientists developing flexible, large area, cost-effective, reel-to-reel printable plastic solar cells have announced that trials have commenced which promise a new era of solar cells that are printed like money. These printable solar cells offer advantages over traditional solar technology because of the potential to mass produce the cells cheaply using polymer printing technology, a process which has already been used in banknotes in more than 20 countries. Read More
Naturally occurring bacteria converts CO2 into calcium carbonate
By Darren Quick
18:56 February 23, 2009 PST
Expensive carbon capture and storage (CCS) projects are gaining momentum around the world as a way to combat greenhouse gas emissions (or is that sweep them under the carpet?), India’s Economic Times has reported that a team of Indian scientists have discovered a naturally occurring bacteria that could help fight global warming by converting CO2 into calcium carbonate (CaCO3) - a common compound found as rock all the world over. Read More
Febot uses wind power to recharge batteries
By Karen Sprey
15:08 February 23, 2009 PST
We're always on the lookout for new, ‘greener’ ways of saving or renewing energy. South Korean designers Ji-yun Kim, Soon-young Yang and Hwan-ju Jeon have developed the Febot, a small, easily-assembled portable battery charger concept that harnesses the power of the wind rather than using electricity. Place a rechargeable battery inside the Febot and stick it on the outside of a window or wall, or any other outdoor surface, using the suction cap at the base of the unit. Read More
Outback Australian town to run on solar power 24 hours a day
By Paul Evans
17:32 February 22, 2009 PST
If ever there was a perfect candidate for solar power, the north-west Australian town of Cloncurry is it. The town has long claimed the title of Australia's hottest recorded day - 53 degrees Celsius in the shade in 1889 - and is now is gearing up to produce solar thermal power capable of supplying all of ts electricity needs, 24-hours a day. The system will use up to 8000 mirrors will reflect sunlight onto graphite blocks through which water will be pumped to generate steam that will operate a conventional steam turbine electricity generator. Because heat stays in the graphite, the system will work through the night and on overcast days. Read More
80% of wars occur in biological hotspots
By Mike Hanlon
11:53 February 22, 2009 PST
Since the rise of the state some 5,000 years ago, large scale warfare has been a permanent global fixture. History shows that the motivations for war are different for those ordering the conflict than for those undertaking it and now a startling new study has found 80 percent of the world's major armed conflicts occur in biological hotspots. That is, the richest storehouses of life, the areas essential for both biodiversity conservation and human well-being, are also the regions of the most human conflict. Millions of the world's poorest people live in hotspots and depend on healthy ecosystems for their survival. Is it time for civilization to take political and social responsibility and protect these places? It certainly makes more sense than fighting over oil! Read More
Microbial toxin-eating technology trial a success
21:06 February 19, 2009 PST
We live in a society that is creating more toxic chemicals everyday. In nearly all forms of production many undesirable chemicals get produced which cannot simply be disposed of, even in industrial settings. If these chemicals are tipped down the sink or flushed down the toilet they will end up back in our water streams and pollute our precious and already strained environment. The standard solution is to transport harmful chemicals to distant chemical treatment facilities where they can be broken down and disposed of responsibly, but these processes use a lot of energy and often produce many undesirable byproducts such as oily polluting residues that end up in landfill. That's where this ecologically friendly bacterial treatment from Microbial Solutions' comes in. Microcycle, as it's known, turns toxic exhausted metal working fluids into grey water that is safe to dispose of into the sewerage system. Read More
World's largest solar panels go into production
By David Greig
06:07 February 19, 2009 PST
Solar panel manufacture is a costly process making it difficult for solar electricity to compete with power generated from fossil fuels. One way of driving these costs down is through the production of larger panels, enabling installation costs to be reduced. To this end, Solar Panel Manufacturer T-Solar Global S.A. has just announced that it has begun volume production of the world’s largest solar photovoltaic (PV) modules. The solar panels are sized at 5.7m2 or 2.3m X 2.6m - that's the equivalent to the combined area of over six 42 inch plasma TV’s and T-Solar says that they are ideally suited for solar farm applications where installation costs can be reduced by about 20% over smaller scale panels. Read More
Waste2tricity - turning garbage into electricity
By Darren Quick
20:19 February 17, 2009 PST
It’s common knowledge that the majority of electricity generation and waste disposal methods currently in widespread use are not very environmentally friendly. New British venture Waste2tricity aims to kill two environmentally damaging birds with one stone by taking carbon based waste, either municipal solid waste (MSW) or waste from business and industry, and converting it into clean electricity, thereby reducing the amount of rubbish going to landfill and potentially making a significant contribution to the UK electricity supply. Read More
Heliotex' automatic solar panel cleaning system
By David Greig
20:05 February 16, 2009 PST
When we think of solar panels we think of saving energy, burning less fossil fuel and reducing greenhouse gases that contribute to global warming. Few of us however realize that by not cleaning the panels regularly they could lose up to 30% of their power, off setting these benefits and costing us money. To address this problem, Heliotex a Southern Californian based supplier of solar panel cleaning systems and solar panel anti-theft devices has announced the release of the first patent pending automatic cleaning systems for business and home solar panels. Read More
The Vitruvian Building System: green, cost-efficient and fast
By David Greig
17:51 February 15, 2009 PST
When we think green house emissions, fume spewing factories and highways choked with gas guzzling vehicles are usually the first images that spring to mind, but it may surprise some readers to learn that buildings represent a sizeable chunk of our collective carbon footprint. In America, it's estimated that buildings contribute to 36% of energy consumption and 30% of green house gas emissions and it's an area that's ripe for improvement. Innovative American building company Vitruvian is doing just that by offering a full service green building system that utilizes pre-engineered modular construction consisting of inter lockable panels to form a complete, weather tight building shell. As well as delivering extremely low energy bills, Vitruvian has calculated that if its process was used for all building replacement and construction in America between now and the year 2030, its environmental impact would be the equivalent of removing more than 80 million cars from the road. Read More
Solar Thermal Waste Heat Engine works at low temperature, low pressure
By Paul Evans
23:37 February 12, 2009 PST
Technology capable of generating electricity by extracting energy from heat that is otherwise just wasted is a fairly new branch of renewable technology. A typical co-generation plant uses waste heat from a gas or steam turbine for hot water or space heating. This Waste Heat Engine (WHE) developed by Cyclone Power Technologies operates at temperatures as low as 225F (107 C). The engine can generate up to 10kw from heat sources such as industrial ovens or furnaces, concentrating solar thermal collectors, engine exhaust and biomass combustion. Read More
Madrid to get radical new solar-coated landmark
22:47 February 12, 2009 PST
Spain has a well-earned reputation for extraordinary architecture that, like many buildings around the world which defy convention, divide opinions and cause passions to run high. The next dazzling addition to Madrid's skyline will be the Centro Internacional de Convenciones de la Ciudad de Madrid (CICCM), and it offers much more than simply a conversation piece. Shaped like a giant glass wheel, the Convention Center will be completely covered in photovoltaic panels but will still provide adequate sunlight to reduce the need for artificial light through the use of concave design elements that scatter light into the interior. The 110 meter tall structure will include a rainwater catchment system and house a 5,000 person auditorium and exposition centers in its 100,000 square meter layout. Read More
The GeoBulb LED light bulb
By Darren Quick
20:50 February 10, 2009 PST
Not so long ago choosing a light bulb wasn’t too difficult. Just grab one with the desired wattage in either pearl or clear with the correct fitting for your socket. The need for energy efficient lighting means that it's no longer that simple, and given the amount of ongoing research in the area, the range of light bulb options on the supermarket shelves is set to explode. Technologies competing to replace conventional incandescent bulbs include OLED, Compact Fluorescent Light (CFL) bulbs, and of course LED bulbs. LED bulbs offer improved energy efficiency, produce brilliant light and offer long life and this new LED bulb offering, called the GeoBulb II, puts out more light than a standard 60-watt bulb and uses just 7.5 watts. Read More
Wave and wind power hybrid for off shore wind farms
By Paul Evans
23:48 February 9, 2009 PST
Bringing together the benefits of two eco-friendly forms of power generation, Scottish company Green Ocean Energy has developed a wave power machine that attaches to an offshore wind turbine. The system, known as the Wave Treader, comprises two 20 m (66ft) long floats molded from GRP (Glass Reinforced Plastic) at ocean level attached to a wind turbine tower by 50 m (165 ft) long pivoting beams. As the floats move up and down in response to constant wave action, the arms move hydraulic cylinders attached to the beams by levers, which in turn spins a hydraulic motor connected directly to an electric generator. Read More
Irish firm claims World's most efficient solar hot water panel
By Paul Evans
20:28 February 8, 2009 PST
Irish company Surface Power has launched what it claims is the world’s most efficient solar hot water panel. A report from Silicon Republic states that certification by testing house TUV Rhineland has shown that the innovative product is up to 131% more efficient in morning and evening time and 76% more efficient at midday than other panels. Read More
Alexis Olson
- November 9, 2009 @ 21:08 UTC
