Wednesday, May 28, 2014
While Xcel has signed PPAs for a number of large PV plants in the service areas of its subsidiary utilities, it has also attempted to limit the number of its customers who install PV under net metering arrangements, including attempting to institute a back-door cap on net metering in Colorado.
It's the same kind of problem optimizing panels for solar production and pavement for driving on. The solution will most likely work not as well as existing pavement, nor as well as existing solar panels.
- Flat, not tilted at latitude (loses about 30% of total production)
- Difficult optimizing for both dirt/oil shedding and traction (I believe they say this would require new materials)
- Unknown and likely higher operations and maintenance costs
- Additional water use for more frequent cleaning
- Unknown and likely higher module and installation costs
- Uncertainty about module lifetime dealing with weight, shear, and thermal expansion and contraction
- Difficulty claiming federal tax incentives for multi-use projects
- Expenses solutions for simple problems such as snow removal and lane markings
- Frost heaves and potholes
- Skidmarks, motor oil, dead leaves, roadkill, and oh yes, dirt.
The indiegogo project has gone viral, attracting many of the same people who are attracted to pseudoscience, except this time it is pseudoengineering.
Extremetech.com - Back in 2010, Scott Brusaw estimated a cost of $10,000 for a 12-foot-by-12-foot segment of Solar Roadway, or around $70 per square foot; asphalt, on the other hand, is somewhere around $3 to $15, depending on the quality and strength of the road. According to some maths done by Aaron Saenz, the total cost to redo America’s roadways with Solar Roadways would be $56 trillion — or about four times the country’s national debt.
Tuesday, May 13, 2014
Saturday, May 10, 2014
One thing he suggests is expanding who may subscribe to a given solar garden (currently limited to those within the same county as the solar array). This would certainly make solar subscriptions available to more people, and increase competition; the local monopolies that exist in many Colorado counties and utility service area may lead to higher prices for subscribers. It would, however, lead to a preponderance of solar gardens being located in high-sun areas like the Pueblo area and the San Luis Valley.
On April 3, Xcel Energy in Colorado - a.k.a., Public Service Co. of Colorado - submitted an application to the Colorado Public Utilities Commission (PUC) for approval to begin a solar energy-based green pricing program dubbed Solar*Connect. Xcel customers may recognize this as a solar version of its existing Windsource program - another green pricing offering with a checkered history.
Those who have been following the net metering wars know that Colorado is one of the current battleground states, and this application must be viewed in the context of that battle. If you cut through the spin, it becomes clear that this is yet another salvo in Xcel's war on not only the small distributed generation (DG) solar generator, but on community solar gardens (CSG) as well.
Read more: http://solarindustrymag.com/e107_plugins/content/content.php?content.14120
Thursday, May 8, 2014
Wednesday, May 7, 2014
Sunday, May 4, 2014
Saturday, May 3, 2014
Friday, May 2, 2014
HARTFORD >> Efforts to bring renewable energy to a broader group of Connecticut residents won’t come to fruition during this legislative session, state lawmakers have told solar energy advocates.
With the current legislative session scheduled to end Wednesday, supporters of the so-called “shared solar” bill are assessing why the legislation failed to win enough support from lawmakers to be brought to a vote. And supporters of the legislation say they will be ready next year to make another attempt at getting the bill passed.
Is energy storage the new holy grail of a clean energy future? Energy storage can take the form of large batteries, flywheels, pumped hydro facilities, compressed-air energy storage, and many others. However, the exciting "new kid on the block" is battery storage, largely because of its relatively small size, modularity and rapidly declining costs.
California is at the forefront of the storage revolution and policymakers have recognized the potential role of energy storage in a number of new programs. The biggest of these programs is the AB 2514 energy storage procurement program. This law required the California Public Utilities Commission to consider creating an energy storage procurement mandate for utilities. And that's about all the law did, leaving most issues to the discretion of the CPUC. The law did, however, require that any storage that is mandated must also be cost-effective. That is, the mandate couldn't lead to any net costs for ratepayers. (This is a common requirement in California for new programs, despite the common myth that legislators and policymakers don't care about costs.)
Read more: http://www.greentechmedia.com/articles/read/is-an-energy-storage-tsunami-about-to-wash-over-california?utm_source=Daily&utm_medium=Headline&utm_campaign=GTMDaily
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