Tag Archives: insolation

Torresol Energy provides solar energy night and day

We have as much sun in south Georgia as southern Spain, where they’re building industrial scale solar plants.

Tafline Laylin wrote for Inhabitant, 17 July 2011, Spain’s Gemasolar Array is the World’s First 24/7 Solar Power Plant!,

Torresol Energy has overcome one of solar energy’s biggest challenges: operating when the sun doesn’t shine. The 19.9 MW Gemasolar concentrated solar power plant in Spain’s Andalucia province has two tanks of molten salt (MSES) that store heat energy generated throughout the day. Unlike normal plants that have less thermal storage or none at all, this stored energy enables Torresol to satisfy peak summer energy demand long after sunset.

So we already know how to store solar power, even without developing better batteries. There’s more in the article. About that plant:

Characteristics of Gemasolar:
  • Rated electrical power: 19.9 MW
  • Net electrical production expected: 110 GWh/year
  • Solar field: 2,650 heliostats on 185 hectares
  • Heat storage system: the molten salt storage tank permits independent electrical generation for up to 15 hours without any solar feed.

185 hectares is about 457 acres, or about one VLCIA industrial park.

Seville, Spain, is about 37 degrees north latitude. We’re at about 31 degrees. In other words, Seville is about 360 miles north of us. And we get about the same amount of sun as Seville does.

The average insolation (amount of sunlight falling on the surface) in Seville, Spain is about the same as in Valdosta, Georgia: about 4.85 kWh/m2 per day.

Here’s a month-by-month comparison using Solar Electricity Handbook 2012 Edition. They haven’t heard of Valdosta, so I used Macon. You remember Macon, where it was 110 degrees June 30th.

WhenJan Feb Mar Apr May JunJul Aug Sep Oct Nov Dec
Seville 4.16 4.76 5.68 5.81 5.98 6.49 6.90 6.77 6.01 4.78 3.96 3.63
Macon 3.76 4.24 5.03 5.52 5.58 5.16 5.24 5.07 4.84 4.96 4.18 3.73

Some months, Sevilla has a bit more sun. But in part of the fall, we have more sun.

Maybe we should start thinking bigger around here. And if we’ve got the sun for a big solar plant, we’ve got the sun for a lot of little rooftop solar panels. How about if we put Valdosta, Lowndes County, and south Georgia on the solar map so everyone will hear of us?

-jsq

Southern Company deploying solar in Nevada and New Mexico (but not Georgia)

Southern Company (SO) is deploying solar power in two southwestern states. Meanwhile, in Georgia, the 1973 Territoriality Act continues to impede others deploying solar while SO and Georgia Power waste our money on a nuclear boondoggle.

PR from Southern Company and Turner Renewable Energy, 29 June 2012, Southern Company and Ted Turner Acquire Second Solar Photovoltaic Power Project

Southern Company (NYSE: SO) Chairman, President and CEO Thomas A. Fanning and Turner Renewable Energy founder Ted Turner today announced that the companies have acquired and will bring on line a 20 megawatt solar photovoltaic power plant in Nevada.

The Nevada plant is the Apex Solar Project, and earlier they did the Cimarron Solar Facility in New Mexico.

“Southern Company is proud to play a leadership role in renewable generation as we deliver clean, safe, reliable and affordable energy to our customers,” said Fanning. “Our all-arrows-in-the-quiver approach calls for 21st century coal, nuclear, natural gas, renewables and energy efficiency in a diverse fuel mix necessary to meeting growing consumer demand and furthering America’s energy independence.”

Maybe it’s just an oversight that SO CEO Fanning listed coal first Continue reading →

Michael Noll: “enough is enough”

Here is a followup to the VDT story in the previous post.

-jsq

Dear Lowndes County Commissioners.

My sincere thanks for letting me present my concerns at yesterday’s meeting. It is very much appreciated.

Please understand that what I presented is based on facts. I have worked for ten years at VSU as an educator, and my students and colleagues know me as a straightforward person. I may ruffle some feathers at times, but I clearly was brought up in a no-nonsense household.

If Mr. Lofton would not continue to ignore our concerns (as he again did at the BOE meeting), to misrepresent organizations such as the Sierra Club (an organization I happen to support), or to keep bringing up names of those who endorse the biomass plant (yet conveniently overlooks a conflict of interest), I  probably would have never brought this up. However, during these past couple weeks, and particularly with his behavior at the BOE meeting, Mr. Lofton has added insult to injury, and enough is enough.

To substantiate the comments I made yesterday,

Continue reading →

Let’s Think About This!

Michael Noll has offered this letter to anyone who wants to publish it:
This is an open letter with a few questions for the Industrial Authority on the proposed biomass incinerator. Simple answers will do, as we have heard enough confusing verbiage by now:

1. Isn’t it correct that annually the proposed biomass incinerator will emit 247 tons of sulfur dioxide (SO2), 247 tons of nitrogen oxide (NOx), 247 tons of carbon monoxide (CO), 135 tons of particulate matter (PM), 113 tons of PM10, 87 tons of PM2.5, 60 tons of volatile organic compounds (VOCs), and 14 tons of hazardous air pollutants (HAPs)?

2. Isn’t it true that the American Lung Association states that pollutants such as NOx, SO2, and PM can have “severe impacts on the health of children, older adults, and people with lung disease”?

3. Isn’t it correct that the “baghouse filtration technology” in connection with the proposed incinerator cannot capture PM10 (particulate matter smaller than 10 microns) much less PM2.5 (particulate matter smaller than 2.5 microns)?

Continue reading →

jsq VDT LTE pro Solar GA

The VDT printed my LTE today. It doesn’t seem to be online yet. Appended is what I submitted, annotated with some links and pictures. The last picture shows the solar panels on my farm workshop.

-jsq

Re: Forester R. Wayne Bell’s points of May 20, 2010. (Hi Wayne; I’ll get those dibbles back to you soon.)

Where does Georgia Power say Albany’s biomass plant will reduce carbon dioxide emissions by 95 percent? Biomass proponents usually say what Forester Bell says: trees are carbon neutral. That ignores the time gap between clearcutting and new growth. That gap from 15 to 100 years or more can produce a lot of CO2.

As a tree farmer myself, I know the pulpwood market is down in Georgia due to the recession and foreign competition. I’d like to be convinced that biomass is the new market we need, but the more I look into it, the more obfuscation I encounter.

Forester Bell seeks a study showing solar will work in Georgia. Georgia Power’s web pages (renewable energy -> solar -> solar potential)
http://www.georgiapower.com/spotlightsolar/solar_potential.asp
include a map of Georgia’s Solar Potential, Continue reading →

Solar Power and Georgia Power

As we’ve seen, the Center of Innovation – Energy defines solar as a southwestern energy source (see slide 9). That slide uses a version of this map:

I found that map on Georgia Power’s web pages. Meanwhile, here are Georgia Power Solar Projects. Hm, “a rooftop solar demonstration program”, “plans to install solar panels at schools in each of the company’s regions”, “showcase its technology”. Where’s the actual rapid deployment?

Meanwhile, Texas almost doubled its renewable energy generation between 2004 and 2006 and hasn’t stopped since. Continue reading →