Skip to main content

The Facts on CSP

If you've spent any time reading energy blogs, you'll probably trip over some comment spam from time to time on Concentrated Solar Power. Here at NEI Nuclear Notes, we like solar power, and think it's got plenty of potential. What we don't like are folks who overhype the technology and pretend that it can become a substitute source of baseload power.

One of our contributors, Michael Stuart, just wrote a letter to Carribbean Net News outlining the case against CSP:
Inefficient
According to the California Energy Commission, all of the utility-generated solar power in the state amounts to two-tenths of one percent of the state's electricity production. Because of the limited availability of sunlight, these systems have notoriously low capacity factors and are therefore cannot be relied upon for baseload power.

Expensive
According to the California Energy Commission, at 13 to 42 cents per kWhr, solar power is *the* most expensive way to generate electricity, hands down. In a time when energy prices are skyrocketing, few people can afford a large-scale conversion to solar power. What's more, due to its low capacity factors, solar capacity must be backed up with additional stand-by power generation, which adds to the overall cost of solar.

Environmental impact
Solar collectors also require a huge area of land, which must be dedicated to solar generation. Even in the desert, this could disrupt the delicate ecology. Additionally, in order for the salts to remain molten at night, CSP requires fossil fuels to be burned for heat. According to a US Department of Energy study, these systems are "hybridized" with up to 25% natural gas. Ironically, this renewable technology is a contributor to greenhouse gas emissions!
Thanks to We Support Lee for the pointer.

Comments

Anonymous said…
To clarify the response to CSP, natural gas is not used to keep the molten salt storage hot because there are no operating CSP storage units. This is something the CSP proponents say "can" be done but no one has found it economical to do to date. In the SEGS units in California, natural gas is used to power the units when the sun is unavailable. As I understand it, natural gas is used for 25% of the generation because that is the limit allowed under the "renewable" tax break rules. They would use more natural gas if they could.

Popular posts from this blog

Fluor Invests in NuScale

You know, it’s kind of sad that no one is willing to invest in nuclear energy anymore. Wait, what? NuScale Power celebrated the news of its company-saving $30 million investment from Fluor Corp. Thursday morning with a press conference in Washington, D.C. Fluor is a design, engineering and construction company involved with some 20 plants in the 70s and 80s, but it has not held interest in a nuclear energy company until now. Fluor, which has deep roots in the nuclear industry, is betting big on small-scale nuclear energy with its NuScale investment. "It's become a serious contender in the last decade or so," John Hopkins, [Fluor’s group president in charge of new ventures], said. And that brings us to NuScale, which had run into some dark days – maybe not as dark as, say, Solyndra, but dire enough : Earlier this year, the Securities Exchange Commission filed an action against NuScale's lead investor, The Michael Kenwood Group. The firm "misap

An Ohio School Board Is Working to Save Nuclear Plants

Ohio faces a decision soon about its two nuclear reactors, Davis-Besse and Perry, and on Wednesday, neighbors of one of those plants issued a cry for help. The reactors’ problem is that the price of electricity they sell on the high-voltage grid is depressed, mostly because of a surplus of natural gas. And the reactors do not get any revenue for the other benefits they provide. Some of those benefits are regional – emissions-free electricity, reliability with months of fuel on-site, and diversity in case of problems or price spikes with gas or coal, state and federal payroll taxes, and national economic stimulus as the plants buy fuel, supplies and services. Some of the benefits are highly localized, including employment and property taxes. One locality is already feeling the pinch: Oak Harbor on Lake Erie, home to Davis-Besse. The town has a middle school in a building that is 106 years old, and an elementary school from the 1950s, and on May 2 was scheduled to have a referendu

Wednesday Update

From NEI’s Japan micro-site: NRC, Industry Concur on Many Post-Fukushima Actions Industry/Regulatory/Political Issues • There is a “great deal of alignment” between the U.S. Nuclear Regulatory Commission and the industry on initial steps to take at America’s nuclear energy facilities in response to the nuclear accident in Japan, Charles Pardee, the chief operating officer of Exelon Generation Co., said at an agency briefing today. The briefing gave stakeholders an opportunity to discuss staff recommendations for near-term actions the agency may take at U.S. facilities. PowerPoint slides from the meeting are on the NRC website. • The International Atomic Energy Agency board has approved a plan that calls for inspectors to evaluate reactor safety at nuclear energy facilities every three years. Governments may opt out of having their country’s facilities inspected. Also approved were plans to maintain a rapid response team of experts ready to assist facility operators recoverin