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Colin Bennett

LED Breakthrough...2X More Efficient than ANYTHING | EcoGeek | Light, Leds, Watt, Comme... - 0 views

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    It seems that in the last decade scientists have switched goals from producing efficient LEDs to producing "natural light" LEDs. However, whenever this was achieved, significant efficiency sacrifices were made to enable experimentation to work. Through use of a nano-crystaline coating, it seems that scientists at Bilkent University, Turkey have succeeded in creating an LED that "produces attractive white light while wasting next-to-no electricity". The definition of attractive is that for each watt of light produced, around 300 lumens are visible to the human eye. This compares with fluorescents which produce around 80 lumens per watt, according to the article. There is however a barrier to market. This is because the nano-crystalline coating is expensive and apparently difficult to produce.
Colin Bennett

Review: Smart Power Strips : MetaEfficient - 0 views

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    I've been testing a surging-protecting power strip called the Smart Strip by BITS. The Smart Strip works like this: it has a "Control Outlet" which controls six other outlets on the power strip. If you plug a computer into the Control Outlet, and it turns off or goes into sleep mode, the other "switched" outlets on the strip will be turned off. There are also three other outlets that are "always on". Most people use this power strip to turn off all their computer peripherals, or to shut down their home theater system, when they turn off their television.
Hans De Keulenaer

IEEE Spectrum: Plugging Away in a Prius - 0 views

  • In October, Sawyer paid US $25 000 for a brand-new black 2008 Toyota Prius. But compared with his RAV4 EV, it was a gas guzzler, going only 1 or 2 km electrically before switching on its internal combustion engine. So Sawyer wrote a check for the car, then drove it directly to Hybrids Plus [see our sidebar,"Getting on the Grid"], also in Boulder, where he wrote another check, for $32 000—to have his shiny new Prius converted into a PHEV. (The radio-telemetry business has been very good to Sawyer.)
Hans De Keulenaer

Decarbonising our economies means redefining progress « 3E Intelligence - 0 views

  • Time to dispair? Not according to Monbiot: “We must confront a challenge which is as great and as pressing as the rise of the Axis powers. Had we thrown up our hands then, as many people are tempted to do today, you would be reading this paper in German. Though the war often seemed impossible to win, when the political will was mobilised strange and implausible things began to happen. The US economy was spun round on a dime in 1942 as civilian manufacturing was switched to military production(25). The state took on greater powers than it had exercised before. Impossible policies suddenly became achievable.
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    Hope it is not time for the ' global war on climate change'.
Sergio Ferreira

Smart Plug To Cut Down Your Power Bill | Got2BeGreen - 0 views

  • Smart plugs would be fitted to all appliances in the home and communicate via radio waves back to a central control panel to calculate how much energy each device is using and when equipment is operating needlessly. For example, if your phone is fully charged it will turn off further supply of energy to the phone.
  • The plug will even have an “integrated motion sensor” to detect minimal activity in a room to shut down devices left on. If something has been shut off that shouldn’t be, a simple flick of a switch to turn it back on again will tell the central controller that you don’t like that particular service being compromised.
Hans De Keulenaer

Planet2025 News Network - ntext - 0 views

  • Companies that have switched to renewable energy are reporting a number of bottom line advantages, including reduced corporate greenhouse gas emissions, diversification of energy sources to hedge against fluctuating fossil fuel prices, as well as strengthening customer relationships and brand differentiation.
Sergio Ferreira

Efficient GreenPower Drives | Got2BeGreen - 0 views

  • Per Western Digital, switching to Green Power is the equivalent of removing your car from the roadways 14 days out of the year and save you up to $10 per drive each year in electricity costs.
davidchapman

Hosting provider gains power efficiencies through switch to DC power | News | ZERODOWNT... - 0 views

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    UK managed hosting provider Ultraspeed has announced the roll-out of a unique combination of technology designed to deliver a next generation hosting service with dramatically enhanced reliability and a reduction in power consumption estimated at 40%. To achieve this, the company is using an innovative blend of measures which includes the adoption of DC power, a 'diskless' server environment and the latest Intel Xeon 5300 low-voltage quad core processors.
Colin Bennett

Holiday Inn switches to LEDs saving $4 million - 0 views

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    As part of a $1 billion global relaunch, Holiday Inn is incorporating energy efficiency lighting measures at its 3200 hotels that will save over $4 million annually.
Colin Bennett

Idle computing costs UK firms £300 million a year - 0 views

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    The bad news: organisations in the UK are wasting as much as £300 million a year by keeping idle computers switched on at night, according to a report conducted by Harris Interactive® on behalf of 1E and the Alliance to Save Energy. The good news: British organisations are much better at conserving computer energy than are their counterparts in the US. Concerns about the environment inspire 27 percent of UK workers to power down their computers at the end of the workday, according to the report. In the US, only 10 percent cited such concerns. If all the 17 million computer-using workers in the UK would power down at night, they could reduce the nation's yearly carbon dioxide emissions by about 1.3 million tonnes - about as much as is produced by 245,000 cars.
frank smith

Light-emitting diode - Wikipedia, the free encyclopedia - 0 views

  • The LED is based on the semiconductor diode. When a diode is forward biased (switched on), electrons are able to recombine with holes within the device, releasing energy in the form of photons.
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    A light-emitting diode (LED) (pronounced /ˌɛl.iːˈdiː/[1]) is a semiconductor light source. LEDs are used as indicator lamps in many devices, and are increasingly used for lighting. Introduced as a practical electronic component in 1962,[2] early LEDs emitted low-intensity red light, but modern versions are available across the visible, ultraviolet and infrared wavelengths, with very high brightness.
Hans De Keulenaer

100% Renewables by 2050 - or earlier? (environmentalresearchweb blog) - environmentalre... - 1 views

  • Europe could switch to low carbon sources of electricity, with up to 100% coming from renewables by 2050, without risking energy reliability or pushing up energy bills, according to a major new study, Roadmap 2050: a practical guide to a prosperous, low-carbon Europe, developed by the European Climate Foundation (ECF) with contributions from McKinsey, KEMA, Imperial College London and Oxford Economics. It says that a transition to a low- or zero-carbon power supply based on high levels of renewable energy would have no impact on reliability, and would have little overall impact on the cost of generating electricity.
Colin Bennett

Biofuels emissions may be 'worse than petrol' - earth - 07 February 2008 - New Scientis... - 0 views

  • Biofuels, once seen as a useful way of combating climate change, could actually increase greenhouse gas emissions, say two major new studies. And it may take tens or hundreds of years to pay back the "carbon debt" accrued by growing biofuels in the first place, say researchers. The calculations join a growing list of studies questioning whether switching to biofuels really will help combat climate change.
Jeff Johnson

Is it better for the planet to grill with charcoal or gas? (Slate Magazine) - 0 views

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    Barbecue season is upon us, and I'm wondering about the greenest method for cooking up my legendary T-bones and sweet sausages. Should I stick with charcoal, which I've used for years, or should I finally make the switch to gas?
Hans De Keulenaer

Research Recap » Blog Archive » Solar Power Could Supply 69% of US Electricit... - 0 views

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    A massive switch from coal, oil, natural gas and nuclear power plants to solar power plants could supply 69% of the US's electricity and 35% of its total energy by 2050, according to Scientific American. However, $420 billion in subsidies from 2011 to 2050 would be required to fund the infrastructure and make it cost-competitive, the publication says in "A Solar Grand Plan" presented in its January 2008 issue.
Hans De Keulenaer

ECREEE Validation Workshop on Renewable Energy and Energy Efficiency Policies and Scena... - 1 views

  • The Commission of the Economic Community of West African States (ECOWAS) works towards a voluntary commitment to the Sustainable Energy For All Initiative of the UN Secretary General presented at the Rio+20. In a regional workshop, held from 25 to 27 June 2012 in Dakar, Senegal, the Directors of the ECOWAS Ministries of Energy agreed on the main targets and pillars of a regional renewable energy and energy efficiency policy of ECOWAS. The policies aim at the following objectives: Around 30% of the electricity consumption in the ECOWAS region will be saved through demand and supply side efficiency improvements by 2030. The share of renewable energy (incl. large hydro) of the total installed electric generation capacity of ECOWAS will increase to 35% in 2020 and 48% to 2030. The share of new renewable energy such as wind, solar, small scale hydro and bioelectricity (excl. large hydro) will increase to around 10% in 2020 and 19% in 2030. These targets translate to an additional 2.425 MW renewable electricity capacity by 2020 and 7.606 MW by 2030. To provide universal access to energy services it is envisaged that around 75% of the rural population will be served through grid extension and around 25% by renewable energy powered by mini-grids and stand-alone systems in 2030. By 2020 the whole ECOWAS population will have access to improved cooking facilities either through improved stoves or fuel switching to other modern forms of energy such as LPG. The share of ethanol/biodiesel in transport fuels will increase to 5% in 2020 and 10% in 2030. By 2030 around 50% of all health centers, 25% of all hotels and agro-food industries with hot water requirements will be equipped with solar thermal systems.
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