It’s rare that you’ll encounter a home owner today who says that if they had the option, they wouldn’t want to reduce their carbon emissions or reduce their energy consumption, and in turn, the costs of home ownership. The problem is, that in many cases, greener home technology is just out of reach of many North Americans because of the high costs that are still associated with the options available on the market. This has been the case with voltage optimization technology that can accomplish the above goals, but until recently, it’s only been attainable to large organizations looking to optimize their energy use because of cost. A UK company has decided to address this lapse in the industry by introducing the VPhase, an affordable voltage optimization technology for home owners.
By Mariella Moon •
October 21, 2009
A new Kansas-based company called EcoFit Lighting believes it can make the transition to LED street lighting not only much easier, but also much cheaper.
EcoFit’s design is a retrofit module that slides right into place in existing streetlights, eliminating the need to have a full replacement. The company claims using their product would bring down costs from $700 to $900 (for a complete replacement) to just $400. Savings also come in the form of energy efficiency and extended lifespan as EcoFit’s LED lights are 60 percent more efficient and last six times longer than sodium streetlights. Additionally, as it’s estimated that replacing street lights with EcoFit LED lights would take just five minutes (as opposed to taking up to 30 minutes to fully replace the head), labor costs are also expected to be reduced.
By Susan Kraemer •
October 19, 2009
A University of Rochester team has been awarded $1.7 million to generate hydrogen fuel with sunlight using artificial photosynthesis and nanotubes. Generating hydrogen without using a fossil fuel is not easy. Using sunlight to split hydrogen off from water has been done before, but the process has not been cheap or efficient.
They propose to change that by dividing the nanoscale process into three separate modules that can be manipulated separately to isolate the process of gathering sunlight from the process of generating hydrogen.
This way they can better control each step.
This year’s Solar Decathlon at the National Mall has come to a close, and the winner has been crowned! Germany, for the second year in a row, has taken the gold for it’s Net Zero, solar powered home after a week long competition that brought many innovative ideas to light.
By Lucille Chi •
October 15, 2009
New York City plans to train one thousand superintendents on green buildings this year. City managers of commercial and high-rise residential buildings now have the chance reduce greenhouse gas emissions in the city on a sky high level.
Mayor Michael Bloomberg took part in the program, “One Year, One Thousand Green Supers” which was also approved by the U.S. Green Building Council and the Building Performance Institute. It’s also made possible by the Thomas Shortman Training Fund. This is part of NYC’s huge goal to reduce their building-generated carbon footprint.
By Susan Kraemer •
October 14, 2009
A Florida school district was way ahead of the clean energy curve in the ’80’s. The Hillsborough School District contracted with the first companies pioneering the use of cheap excess off-peak night time power to freeze water at night which would then provide simple cooling by day for air conditioning. Some of those companies had not yet ironed out the kinks in the brand new technology, and recently the district had to find a replacement for these coolers.
A more timid school district might have run from off-peak energy storage altogether. But not Hillsborough. They are taking what they learned and applying their school of hard knocks expertise in selecting from the many companies that now provide second generation night cooling technology to power air conditioning systems.
What’s changed since the eighties is the addition of more wind power to the grid, and the likelihood of more to come with RPS legislation requiring the purchase of more renewable power in many states.
Typically most wind power comes ongrid at night; much more than can be used.
By Tina Casey •
October 12, 2009
Lighting Science Corporation has just announced a new breakthrough in high efficiency LED (light emitting diode) technology that outperforms existing LED streetlights, providing an even greater incentive for the nation’s roadways and institutions to make the switch from standard streetlights to more sustainable LED lighting.
The new LEDs, dubbed the PROLIFIC Series Roadway Luminaires, offer substantial savings over conventional HID (high intensity discharge) streetlighting. Lighting Science also claims that PROLIFIC performs up to nearly 90 lumens per watt, giving it a big advantage over current LED technology, which performs at up to 60 lumens per watt. To sweeten the payback even more, federal stimulus funds are available for cities to make the switch from conventional lighting to LED.
By Susan Kraemer •
October 11, 2009
A team of students at MIT has just developed a temperature sensitive roof tile that turns black and absorbs heat in cold weather, and turns white, reflecting heat away when it’s hot.
In cold weather, the polymer stays dissolved and the black backing shows through, but exposed to heat, tiny droplets form and scatter the light back to produce a white appearance. The tiles reflected 80% of the sunlight falling on them when white, and only 30% when black.
The cooling needs would then be reduced 20%.
By Susan Kraemer •
October 10, 2009
You knew you keep a fire in a box in your laundry room, right? Not only is that kind of a scary thought, but it’s an extremely inefficient way to dry clothes; lighting a fire every time you turn on the clothes dryer. Lint catches fire all the time. But even worse, that natural gas emits carbon dioxide and is likely the second most extravagant energy expenditure in your home after the fridge.
We can do something about the fridge by buying an Energy Star rated efficient one, but until now, inexplicably, clothes dryers have not been rated under the Energy Star program.
You have to wonder why there has been so little move to improve energy efficiency in the second biggest energy guzzler in most homes…in a nation that uses 25% of the world’s energy.
Here’s a company that can make a clothes dryer 50% more efficient with a heat exchanger. Hydromatic. So why has their idea not been incorporated into clothes dryers?
By Joe Walsh •
October 10, 2009
Time-traveling to 2010 reveals how some of Washington’s worst-kept secrets will catch up with President Obama and cripple his climate agenda.
By Yael Borofsky •
October 9, 2009
Solar Decathlon 2009: The Construction Site
The solar capacity of the National Mall in Washington D.C. has increased exponentially in just a week as teams of college students from 20 international schools hurriedly reassembled their submissions for the fourth ever Solar Decathlon, a competition in which students must create “the most attractive, effective, and energy-efficient solar-powered house.” The three-week event kicked of yesterday with an opening ceremony that featured a speech from Energy Secretary Steven Chu, who
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