Friday, December 31, 2010
Saturday, November 27, 2010
Saturday, October 30, 2010
Wednesday, September 29, 2010
Landfill Methane energy plant announced
A story in the Cape Fear Business News describes a project in which methane gas, which is produced by the decomposition of material in a Wayne County landfill, will be used to fuel a small power plant with the energy sold to Progress Energy. This is methane (natural gas) that otherwise would have been released to the atmosphere.
More about the Falls Lake water quality
The Raleigh Public Record has a story about the quality of water in Falls Lake and the development of rules to protect the lake.
Bright days for solar energy
A warehouse in Holly Springs uses solar panels on its roof to generate power for use in the building and for sale to Progress Energy, according to a story in the News & Observer.
Most of state now in moderate drought
A story in the News & Observer reports that, according to the state's Drought Management Advisory Council, most of NC is now in a “moderate drought condition”, due to the lack of rainfall and the record breaking temperatures. Parts of Granville, Vance, Warren, and Franklin counties are in a “severe drought condition”. See www.ncdrought.org.
Water-gel based “artificial leaves” that produce electricity
Researchers at NC State University have produced solar cells from water-gel based material using plant chlorophyll, according to a story in One India, based in Bangalore, India.
New nuclear plants for Progress Energy?
According to this story in the News & Observer, Progress Energy may be rethinking its plans for future nuclear power units at its Harris nuclear plant in Wake County.
EPA Coal Ash Hearings
This Gaston Gazette story and this story in the Charlotte Observer report on the coal ash hearing the EPA conducted in Charlotte September 14. Molly Diggins, director of the NC Sierra Club, is quoted as saying "there is no agency or individual that can say how much coal ash we are generating, where it’s going, and whether it’s safe".
New 1MW Solar Plant Announced
According to a story in Solar Industry magazine and to their press release, ESA Renewables has been awarded a contract from TVA to build a 1 MW solar power plant, to be located about 200 miles southwest of Charlotte.
Sunday, August 8, 2010
Many people don’t know that Progress Energy (the electric power supplier for most people in eastern North Carolina) has a program that can save some money and help prevent the need for new power plants.
The demand for electricity varies during the day. Particularly during the summer, the electric power demand is at its maximum during the afternoon, and less during the night. Power companies such a Progress run their most efficient plants (those that use the least fuel) 24 hours per day. But the least efficient plants are only run during times of high demand (afternoons).
Sometimes the power company cannot meet its peak demand simply by putting additional plants on line. One way of dealing with this situation is “load shedding”, that is, reducing the load when necessary.
Progress Energy has a program to “cycle” air conditioners, turning them off for 15 minutes when there is insufficient generating capability. In this program, a box is placed on the side of central air conditioner compressor units (the outside part). When a reduced load is needed, a signal from a satellite is received by the box, turning the air conditioner off. No phone line connection or internet connection is needed.
The air conditioner interruption will only take place during the week (Monday – Friday, excepting holidays) and between 1pm and 4pm. Most people will not notice any change in temperature.
Monday, May 31, 2010
For more, see the NC Sierra Club blog post here.
Wednesday, May 19, 2010
Future meetings will be about greenways and trails, water quality and availability, solar energy, and other environmental subjects.
All meetings will be at the same locations and will be held on the third Thursday of each month.
Saturday, May 15, 2010
Although support has decreased, it is still surprising that even after the Gulf accident more people support off shore drilling than oppose it.
For more information, click here.
Wednesday, March 31, 2010
If there is an oil spill that affects the coast of North Carolina, the result could devastate both the fishing industry as well as the tourism industry in NC. Many of the elected leaders and candidates for office in NC have vowed to fight against drilling in North Carolina’s waters.