Wednesday, March 19, 2008
Sunday, February 24, 2008
The plant will provide electricity to 70,000 homes using solar heat, as opposed to panels, and help the utility to meet required goals for renewable sources of supply.
APS will pay $4 billion over 30 years for the supply, or $133 million annually for 280 megawatts.
Alexis Madrigal makes some extrapolations about the price and finds this a striking deal for solar power, priced below the generally assumed minimal cost of using the sun for electricity.
Madrigal puts the price at about 15 cents per kilowatt, or about 50 percent higher than the average U.S. rate, although Arizona rates are lower.
A different way to look at this is the cost of carbon dioxide emissions avoided. This calculator from the National Renewable Energy Laboratory suggests about 400,000 tons of carbon will be avoided. Figuring that the annual payment of $133 million is a 50 percent increase over alternative carbon-intensive power, that works out to a little over $100 per ton of carbon avoided.
Thursday, February 21, 2008
The Acid Rain Program is run by the Environmental Protection Agency (EPA) and is widely viewed as being very successful, bringing about large reductions in SO2 emissions for lower-than-expected costs.
Wednesday, February 20, 2008
For 30 years, Steve Berger has been a no-till farmer of corn and soybeans on his 2,200 acres in Wellman, Iowa, as a way to protect his soil from erosion and keep organic matter in the ground to aid the growth of his crops. Berger also qualifies to sell carbon credits — credits that businesses and others buy to offset their own self-imposed emission caps from those who trap or keep carbon in the ground. That is secondary to the benefits the no-till method offers to his land, he said.
“Last year, I made almost $3,000 from selling them, a little extra spending money for when my wife goes to Chicago,” Berger said. “But I’m not really sold on the whole thing. This is something I would do anyway, and some company is using me so it doesn’t have to clean up its own act.”
Friday, February 15, 2008
Diatom Corporation (“the Company”) was incorporated as eWorld Travel Corp on December 10, 1998 under the laws of the state of Nevada. On September 23, 2002, the Company changed its name to GYK Ventures, Inc. and on July 8, 2005, the Company changed its name again to Diatom Corporation. The Company originally was organized to provide internet-based travel services. On March 8, 2007, the Company effected a 1:1.5 forward split of its common stock and amended its articles of incorporation to reflect a name change from “Diatom Corporation” to “Planktos Corp.”
Monday, February 4, 2008
John F. Kennedy (1917-1963) Thirty-fifth President of the USA.
The USA has long led the industrialized world and been the bastion of democracy during bitter struggles with totalitarian ideologies. Yet as the world's biggest consumer of energy very little is spent on finding alternatives to the burning of fossil fuels that are the biggest contributor to gren houses gases. Maybe it's because there is not enough pain to the average consumer yet. Or maybe the torch has yet to pass to a new generation of Americans.
Saturday, February 2, 2008
IPCC For the hypothetical country,
GW = 4.0 tonnes d.m.
ha-1 yr-1 (Table 4.12); and
R = 0.40 tonne d.m. (tonne d.m.)-1 for
above-ground biomass <50 gtotal =" 4.0" cf =" 0.47">● 5.6 tonnes d.m. ha-1 yr-1 ● 0.47 tonne C (tonne d.m.)-1
= 2,632 tonnes C
In recent decades, the researchers say the area burned each year by wildfire has doubled, annual harvest rates have increased somewhat, and rates of carbon uptake by aging (Canadian) forests have slowed. In extreme fire years, such as 1995, 1998, 2002, 2003, and 2004, the carbon dioxide released as the forests burned accounted for up to 45% of Canada's total greenhouse gas emissions, dwarfing emissions from big industrial sources. In other years the forest still absorbs more carbon than it releases.