Schools hope rate will solve solar snagBills rose after panels installed
The San Diego Unified School District had its electricity bills go up about $20,000 a year after it installed solar-energy systems at 28 schools, said J. William Naish, the district's energy management coordinator. The Lemon Grove School District also is paying more in energy costs – when its $2 million portion of the cost for solar panels is included – than it did before it added solar equipment.
San Diego schools had planned to put in solar-power systems at 50 schools, but stopped because planners couldn't figure out why bills went up.
State subsidies paid half of the $4 million cost of installing banks of solar panels longer than football fields at three Lemon Grove schools. The district figured its bills would be higher for a few years because of the cost of paying off the panels. But when Potter had her team crunch the numbers, they discovered the annual bills exceeded projections by more than $100,000 a year.
As it stands, large users such as schools pay not only for the energy they use but for the fixed costs of transmission lines, towers and other equipment necessary to make sure power flows when the lights are turned on. They're called demand charges, and they're paid only by big users, not homeowners.
That explains why Lemon Grove's three solar campuses ended up getting a bill for $3,630 in July – when they were closed and giving solar-generated electricity back to the utility.
russ wrote: »
Please see The Next Big Future for an article and spread sheet about this item.http://nextbigfuture.com/2010/02/bloom-energy-currently-costs-128-cents.html?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed:+blogspot/advancednano+(nextbigfuture)
With strong breezes blowing early Sunday afternoon in West Texas, wind-power generation hit a record 6,242 megawatts on the Electric Reliability Council of Texas' grid, which serves most of the state.
The wind generation peaked at 12:54 p.m., representing an exceptionally high 22 percent of demand at that time, ERCOT spokeswoman Dottie Roark said Monday. Most of the wind facilities are in West Texas and the Panhandle.
After the wind generation soared Sunday, ERCOT curtailed it because the supply of electricity outstripped the capacity of lines to move the power to urban areas such as Dallas-Fort Worth.
"We have more wind [generation] built in the west than can be accommodated on the existing transmission lines," Roark said. That's why ERCOT is overseeing a huge $5 billion project to build more lines from wind farms to the state's metropolitan areas, she said.
As a result of the power constraints, the market price for wind power generated in ERCOT'S western zone fell to negative numbers early Sunday afternoon. That meant "wind generators would have to actually pay to continue generation," said Mack Grady, a professor of electric and computer engineering at the University of Texas at Austin.
Texas has a total wind capacity of 9,410 megawatts, of which 8,916 megawatts is in ERCOT, Roark said. ERCOT's wind capacity accounts for more than 10 percent of the grid's total available generating capacity of 76,363 megawatts.
patent 7,514,166 wrote:
... the anode electrode is subjected to an initial electrochemical reduction. In other words, the electrochemical reduction is conducted prior to normal or commercial operation of the fuel cell in the fuel cell stack to generate electricity from fuel and oxidizer. In this method, an electrolysis potential is applied across the cell when the anode is in its initial oxidized state (i.e., the nickel is initially in the form of nickel oxide) in order to rapidly and preferably completely reduce the initial nickel oxide to nickel. For a commercial size fuel cell stack, a large power supply, such as a large battery, a battery array or a power supply attached to the external grid may be provided.
....The first cell is electrochemically reduced for 45 minutes using the above described electrochemical reduction method prior to its operation to generate electricity according to an example of the first embodiment. The second cell is reduced with dry hydrogen for two hours prior to its operation without applying a potential to the cell (i.e., the cell is idled in an open circuit configuration) according to a comparative example. As can seen in FIG. 2, the performance of the cell according to the example of the first embodiment (upper line marked "ECR" for electrochemical reduction) is improved compared to the performance of the cell according to the comparative example (lower line marked "CR" for chemical reduction) over 300 hours of operation of both cells.
Sean Stutz wrote: »
well if it equals out to the same price, i would imagine most residential consumers would lean toward one box rather than put a bunch of holes in their roof with multiple panels. it seems that something like this could roundhouse kick solar in the throat and knock it down.
it seems to me that people feeding their families by income from the solar industry should be threatened by this.