Earth2Tech writer Craig Rubens shares this map showing the death of planned new coal generation plants between 2005 and 2007. During that time utilities and other power producers canceled 21 projects located in 15 states. In 2008 the National Energy Technology Laboratory changed their projections of new coal fired projects to be constructed by 2020 from 151 in May to 120 by October. That is 30 plants off the table in five months!
Mary Manning of the Las Vegas Sun reports this trend is continuing with the cancellation of two coal plants in Nevada and one in Iowa this year alone. Instead of new coal fired generation developer LS Power plans to focus on a new transmission line, the South West Intertie Project ("SWIP") connecting southern Idaho with Las Vegas. This chart from the Nevada PUC shows that, until the coal fired Mojave Generation Plant was shut down in 2005 for refusing to install pollution controls, Nevada exported far more energy than they imported. The SWIP line will allow Nevada to access these geothermal sites, this solar potential, and widespread wind. Manning also reports that LS Power is still pushing forward with a 1.5 gigawatt coal plant near Ely. Get interactive versions of these maps developed by university of Nevada Reno that display renewable potential along with land ownership and management classification. If Nevada returns to a net exporter and the SWIP connects Las Vegas and southern Idaho than it seems like Idaho is being set up to purchases public lands power generated on this desert landscape.
So while some plants die others are born. Until the public breaks the economic incentive for utilities to collect money only for units of energy sold we can expect to merely shift between generation sources instead of talking about money saving, environment saving, and security saving efficiency and conservation.
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Showing posts with label public energy. Show all posts
Showing posts with label public energy. Show all posts
Friday, June 5, 2009
Wednesday, June 3, 2009
Electric Bill Draining Your Pocketbook? Paint Your Roof White and Save $ and the Earth.
On a summer day go outside and feel the difference between the searing heat of an asphalt parking lot compared with the strikingly cooler light colored sidewalk. This same phenomena happens on millions of rooftops nationwide causing hot houses, high cooling bills, and contributing to the heat island effect where urban areas are several degrees hotter than surrounding natural areas.
Energy Secretary and Nobel Prize winning physicist Steven Chu recently described perhaps the simplest, most effective way to reduce your home energy bills, converting your existing roof to reflective materials. Author Sam Kornell reports on a study by three leading energy experts showing that if the average American converted 2000 sqft of roof from black shingles to white, the reflected sunlight and heat from the albedo effect would offset the equivalent of 20 tons of carbon emissions under current technology. 20 tons of carbon happens to be the average American's output as well.
Air conditioning load belongs to a small class of serious strains on both the current grid as well as driving a disproportionate share of rising energy costs. The Florida Solar Center studied the impact of roof conversion on a set of typical residential homes in Ft Meyers Florida. Controlling for all other factors they found conversion of roofing to reflective materials reduced home cooling energy consumption up to 26% and peak demand overall by roughly 1/3rd. That's right, just simply changing roof color will cut your energy bill by 1/4 and avoid the need for 1/3 of new energy development.
The EPA and Department of Energy provide an online calculator anyone can use to find the potential energy and money savings available by converting their own roof to reflective materials. After entering some details about the building type, heating and cooling equipment, location, and local electric rates the calculator returns an estimate of yearly energy and cost savings. You can find your local electric rates here and gas price here. Check it out and report back your findings!
Builders and manufactures are quickly catching on to this simple, cheap and effective tool for combating climate change. Roofing company Petersen-Dean markets a new roof covering that is both reflective and integrates solar panels into the material. They estimate their SmarterRoof to be less expensive and last 40% longer than traditional roofing, offset up to 90% of your energy bills, and will repay for itself in 5 - 7 years. This double punch of cooling and electricity supply instead coating your roof with asphalt shingles empowers homeowners to take charge of their energy usage.
Some folks argue that the "winter penalty," or winter time heat gain lost by converting from black roofs offsets some energy savings from reduced summer cooling load. However, construction giant McGraw Hill explains that researchers studied 11 cities across the country and found that in while actual levels vary between homes in northern and southern sections of the country, in all instances the minimal loss of winter heating is outweighed by the savings in summer cooling. In northern climates any winter heat gain is minimal due to the low angle of sunlight, shorter daylight hours, fewer sunny days, and in the coldest climates snow covered roofs.
So what's stopping this cheap, effective method to reduce energy bills and our impact on the earth? Silly architectural and aesthetic community regulations and city ordinances that mandate dark roofing materials in order to reduce the glare of reflective light. A simple google search for "community CCR's and roof material" returns a wide variety of subdivisions, planned communities, and other organizations around the country that prohibit homeowners from choosing to change their roof color. These aesthetic regulations effectively require homeowners to pay higher energy bills and prohibit them from taking cost effective measures to reduce their personal energy consumption. For those of you who live under CC&R's, get a seat on the architectural review committee, or whatever your local review board is named, and advocate for dropping silly and wasteful aesthetic regulations that prohibit personal choice, sound economics, and good environmental practice. For others, make sure your state makes reflective roofing part of their building codes as California, among others, has done. For more information on cool roofs and building codes nationwide see this review by Dr.'s Akbari and Levinson.
The bottom line: Converting roof materials to reflective colors has the potential to offset a massive portion of the annual human contribution to global heat gain. Beyond drastically reducing summer cooling bills cool roof materials are less expensive and more durable than traditional materials. But until communities and cities drop restrictive aesthetic regulations some public citizens are excluded from this simple, cheap, and effective method to make our world a better place while saving their hard earned dollars.
The full original study: Global cooling: increasing world-wide urban albedos to offset CO2 by Hashem Akbari · Surabi Menon · Arthur Rosenfeld
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Energy Secretary and Nobel Prize winning physicist Steven Chu recently described perhaps the simplest, most effective way to reduce your home energy bills, converting your existing roof to reflective materials. Author Sam Kornell reports on a study by three leading energy experts showing that if the average American converted 2000 sqft of roof from black shingles to white, the reflected sunlight and heat from the albedo effect would offset the equivalent of 20 tons of carbon emissions under current technology. 20 tons of carbon happens to be the average American's output as well.
Air conditioning load belongs to a small class of serious strains on both the current grid as well as driving a disproportionate share of rising energy costs. The Florida Solar Center studied the impact of roof conversion on a set of typical residential homes in Ft Meyers Florida. Controlling for all other factors they found conversion of roofing to reflective materials reduced home cooling energy consumption up to 26% and peak demand overall by roughly 1/3rd. That's right, just simply changing roof color will cut your energy bill by 1/4 and avoid the need for 1/3 of new energy development.
The EPA and Department of Energy provide an online calculator anyone can use to find the potential energy and money savings available by converting their own roof to reflective materials. After entering some details about the building type, heating and cooling equipment, location, and local electric rates the calculator returns an estimate of yearly energy and cost savings. You can find your local electric rates here and gas price here. Check it out and report back your findings!
Builders and manufactures are quickly catching on to this simple, cheap and effective tool for combating climate change. Roofing company Petersen-Dean markets a new roof covering that is both reflective and integrates solar panels into the material. They estimate their SmarterRoof to be less expensive and last 40% longer than traditional roofing, offset up to 90% of your energy bills, and will repay for itself in 5 - 7 years. This double punch of cooling and electricity supply instead coating your roof with asphalt shingles empowers homeowners to take charge of their energy usage.
Some folks argue that the "winter penalty," or winter time heat gain lost by converting from black roofs offsets some energy savings from reduced summer cooling load. However, construction giant McGraw Hill explains that researchers studied 11 cities across the country and found that in while actual levels vary between homes in northern and southern sections of the country, in all instances the minimal loss of winter heating is outweighed by the savings in summer cooling. In northern climates any winter heat gain is minimal due to the low angle of sunlight, shorter daylight hours, fewer sunny days, and in the coldest climates snow covered roofs.
So what's stopping this cheap, effective method to reduce energy bills and our impact on the earth? Silly architectural and aesthetic community regulations and city ordinances that mandate dark roofing materials in order to reduce the glare of reflective light. A simple google search for "community CCR's and roof material" returns a wide variety of subdivisions, planned communities, and other organizations around the country that prohibit homeowners from choosing to change their roof color. These aesthetic regulations effectively require homeowners to pay higher energy bills and prohibit them from taking cost effective measures to reduce their personal energy consumption. For those of you who live under CC&R's, get a seat on the architectural review committee, or whatever your local review board is named, and advocate for dropping silly and wasteful aesthetic regulations that prohibit personal choice, sound economics, and good environmental practice. For others, make sure your state makes reflective roofing part of their building codes as California, among others, has done. For more information on cool roofs and building codes nationwide see this review by Dr.'s Akbari and Levinson.
The bottom line: Converting roof materials to reflective colors has the potential to offset a massive portion of the annual human contribution to global heat gain. Beyond drastically reducing summer cooling bills cool roof materials are less expensive and more durable than traditional materials. But until communities and cities drop restrictive aesthetic regulations some public citizens are excluded from this simple, cheap, and effective method to make our world a better place while saving their hard earned dollars.
The full original study: Global cooling: increasing world-wide urban albedos to offset CO2 by Hashem Akbari · Surabi Menon · Arthur Rosenfeld
Continue Reading
If Geeks Ran the Electric Grid
A vast interconnected series of tubes that responds to dynamic users, requests, and resources while remaining decentralized, easily accessible, and inexpensive. This could describe either the internet or, the electric grid. Except that the grid is dominated by a few vested monopolies with total control over the infrastructure.
Energy expert and CEO Steve Kropper explains why the internet infrastructure model should be applied to the energy grid for true public access.
Original article available at:
http://www.renewableenergyworld.com/rea/news/article/2009/06/if-geeks-ran-the-electric-grid
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Energy expert and CEO Steve Kropper explains why the internet infrastructure model should be applied to the energy grid for true public access.
Original article available at:
http://www.renewableenergyworld.com/rea/news/article/2009/06/if-geeks-ran-the-electric-grid
Continue Reading
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