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

KenG 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

Making Clouds for a Living

Donell Banks works at Southern Nuclear’s Plant Vogtle units 3 and 4 as a shift supervisor in Operations, but is in the process of transitioning to his newly appointed role as the daily work controls manager. He has been in the nuclear energy industry for about 11 years.

I love what I do because I have the unique opportunity to help shape the direction and influence the culture for the future of nuclear power in the United States. Every single day presents a new challenge, but I wouldn't have it any other way. As a shift supervisor, I was primarily responsible for managing the development of procedures and programs to support operation of the first new nuclear units in the United States in more than 30 years. As the daily work controls manager, I will be responsible for oversight of the execution and scheduling of daily work to ensure organizational readiness to operate the new units.

I envision a nuclear energy industry that leverages the technology of today to improve efficiency…

Nuclear: Energy for All Political Seasons

The electoral college will soon confirm a surprise election result, Donald Trump. However, in the electricity world, there are fewer surprises – physics and economics will continue to apply, and Republicans and Democrats are going to find a lot to like about nuclear energy over the next four years.

In a Trump administration, the carbon conversation is going to be less prominent. But the nuclear value proposition is still there. We bring steady jobs to rural areas, including in the Rust Belt, which put Donald Trump in office. Nuclear plants keep the surrounding communities vibrant.

We hold down electricity costs for the whole economy. We provide energy diversity, reducing the risk of disruption. We are a critical part of America’s industrial infrastructure, and the importance of infrastructure is something that President-Elect Trump has stressed.

One of our infrastructure challenges is natural gas pipelines, which have gotten more congested as extremely low gas prices have pulled m…

Innovation Fuels the Nuclear Legacy: Southern Nuclear Employees Share Their Stories

Blake Bolt and Sharimar Colon are excited about nuclear energy. Each works at Southern Nuclear Co. and sees firsthand how their ingenuity powers the nation’s largest supply of clean energy. For Powered by Our People, they shared their stories of advocacy, innovation in the workplace and efforts to promote efficiency. Their passion for nuclear energy casts a bright future for the industry.

Blake Bolt has worked in the nuclear industry for six years and is currently the work week manager at Hatch Nuclear Plant in Georgia. He takes pride in an industry he might one day pass on to his children.

What is your job and why do you enjoy doing it?
As a Work Week Manager at Plant Hatch, my primary responsibility is to ensure nuclear safety and manage the risk associated with work by planning, scheduling, preparing and executing work to maximize the availability and reliability of station equipment and systems. I love my job because it enables me to work directly with every department on the plant…