Posts Tagged ‘wind energy’

Illuminate Highways With Turbine Light

Friday, February 5th, 2010

One way to make our cities more energy efficient is to use the energy we already use and make it go further.  That is the concept behind Turbine Light.  It uses the wind generated by cars and trucks to power the lights and recycles that energy used to produce more energy to light the highways.  It is a good idea, but there are a few issues with this concept. read more »

More Efficient Wind Turbines Look Like Jet Engines

Wednesday, January 27th, 2010

A company called FloDesign has created an all new wind turbine based on technology found in jet engines.  They claim that these new turbines are 3-4 times more efficient, require less space, and can operate at higher speeds than the traditional wind-mill style turbines we see installed today.

Traditional wind turbines create a wake effect much like a wake seen behind a boat.  This causes the turbines behind the front line to be less effective than the ones behind it.  Turbines after the first row tend to produce 20-30% less power.  This is due to the fact that the turbines cannot dynamically move as winds change direction. read more »

Compressed Air Energy Storage Catching On

Friday, January 8th, 2010

Last year we brought you news about Pacific Gas & Electric using compressed air energy storage to solve energy needs.  Now it seems Southwest Solar Technologies is taking it a step further.  Instead of just using wind turbines, it will combine, wind, solar, and other renewable energy resources to make renewable energy grid ready.

If you are not familiar with the technology, it basically uses off peak and surplus energy to power giant compressors that will fill salt caverns with air.  When power is at a greater demand than what is being produced, or in the case of solar, the renewable energy is not available, it will use the air pressure in the caverns to power the generators to produce electricity.

Traditional power plants like a 110 MW plant in McIntosh, Alabama have used this technology successfully for 16 years.  It seems the transition to a renewable source would be the next logical evolution in renewable energy.


Largest Wind Farm Now In Texas Finally Turned On

Monday, October 5th, 2009

texas wind turbinesIt is true.  Everything is bigger in Texas…even wind farms.  The 781.5 MW Roscoe wind complex in Roscoe, Tx was turned on this past week.  The wind farm has 627 turbines on 100,000 acres of land.  they are a collaborative effort between Mitsubishi, General Electric and Siemens and have the read more »

Compressed Air Energy Storage

Wednesday, August 26th, 2009

compresssed-air-energy-storagePacific Gas & Electric has resorted to an older technology to make wind power more effective.  The wind can be unpredictable in terms of when and how hard it blows, and the unpredictability presents a problem for the grid.

PG&E will use the off-peak electricity produced by the turbines to run air compressors that will be used to fill underground caves or caverns left from mining.  When the wind is not blowing as hard or at peak times, the electricity will then be released to a turbine that will then create the extra electricity to meet the grid’s demand.

Another benefit is in terms of cost.  Currently, wind power is more expensive than energy produced at traditional power plants.  This is reflected in the price per kilowatt hour for the consumer hindering many people from switching to environmentally friendly energy.  The compressed air technology will make wind power less expensive and more competitive in the open market allowing more consumers to make the switch.

This is actually a twist on a old idea.  In Huntdorf, Germany, a traditional 290MW power plant will produce extra off peak electricity and store it in the form of air compression, and release it during peak times.  The Huntdorf plant has been in operation for over 25 years.

The compressed air technology has not been tested with wind turbines, but the transition should not pose and problems.


120 Megawatt Wind Powerplant in Ethiopia

Friday, October 17th, 2008

Ethiopia started building the right way.  They have in the past relied on hydroelectric dams for power, but with the severe drought they are facing, they have turned to another renewable resource for energy.  They have announced the building of the largest wind farm in Africa costing 220 million euros.  When it is finished, it will be able to produce 120 megawatts and will supply 15% of the nation’s energy.

The Ethiopian Electric Power Corporation’s chairman Meheret Debebe has stated that the new wind power project “will help us to fill the gap of hydrological risks we are facing in Ethiopia with the droughts”.  This is a significant landmark for other developing countries to build renewable energy infrastructures.

via greenweb

Rhode Island To Get 15% Of Energy From Offshore Wind

Wednesday, October 1st, 2008

Rhode Island awarded Deepwater Wind a contract that will provide the state with up to 15% of its energy needs from offshore wind farms.  Rhode Island Gov. Donald Carcieri said that the project is a move to bring “green collar” jobs to Rhode Island and make it a clean energy leader in the country.  Part of the deal includes a $1.5 billion plant that could provide up to 800 jobs providing $60 million in wages to workers.

While wind power providing only about 1% of the power needs in America, deals like this and T. Boone Pickens deal in Texas can propel the wind energy industry to produce 20% of the domestic energy needs.  Rhode Island is one of the few states that have mandated that 20% of their energy comes from renewable sources by 2020.

via thedailygreen