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August 21, 2006




I like your blog. I have added your site to my blogroll.

I was hoping you could take a look at my blog to see if you would like to add me to your blogroll under "Energy Blogs".

Positive Energy Output.

Thank you,


Jim Baerg

I've long thought that solar roofing material such as this would complement nuclear power very nicely, if it could be cheap enough. Since electricity demand peaks during the day, but there is still substantial demand at night, the combination of nuclear for base load & solar for the daytime peak makes sense.

It's not clear to me how expensive this solar roofing material is compared to ordinary shingles, but the difference may be small enough for this material to make economic sense.

I note that the building is near Chicago & snow load is a design factor. For such locations I think solar siding on the south side would make more sense than solar roofing. That would maximize the power available in winter when cold climate demand is highest & give power even just after a major snowfall.


The PV architectural glass seems interesting, and has a lot of potential uses. Though I wonder how much efficiency and power generation is sacrificed to achieve a desirable tranlucency.

Energy Efficient LED Rope Lights


Cost per watt??


The kwh yield seems a bit high. Maybe the figures would be correct in the desert southwest (Tahoe Center for Environmental Science at Sierra Nevada College in Incline Village, NV), but I'm thinking more like 10,000 kwh per year for cloudier climes.

Which is ok, since that 1500 square feet of roof space will still power your home anyway, with 10,000 kwh per year fed into the grid to buffer the supply/demand inconsistencies.

Then cost IS the factor in the practicality of this system. Of course given mass production that cost factor would drop signifigantly.

Some measure of the efficiency of the PV cells would also help verify the kwh production figures.

A link to a page where one can order these products would be the best way to remedy these mysteries.


Dr. X wrote: with 10,000 kwh per year fed into the grid to buffer...

The grid is not a storage battery.


But it could be! With 100s of millions of electric plugin hybrids and electric vehicles hooked into it.

And energy intensive applications like melting glass and steel set up to operate at times of peak supply and low demand. this is already happening.

And building heating and cooling with geothermal heat pumps that operate during peak supply and low demand, then storing the heat or cool throughout the day.

And superconducting energy storage systems installeds on the grid, like my particular power provider has done here in northern wisconsin to buffer demand from the paper industry. The first in the world, it is saving a lot of fuel.

And renewable power systems connected across wide regions so that either wind, wave, water, or solar power can smooth out supply regardless of weather conditions in one particular area.


"The grid is not a storage battery."

In a net metering state, yes it is. For all intents and purposes, you are feeding excess energy into the grid during the day, and drawing it back at night.


What a great Idea
I live in Iowa and the high side of my 1 1/2 story house faces the south leaving me with more square footage of siding exposed to full sun than I have roofing as the roof slops east and west with an upstairs dorm room jutting out on the east side and a large tree shades the other.

Add solar siding to house with Solar roofing and you have even more energy produced.

This would also help out when 12 inches of snow covering the roofing panels. You can't get much energy out of the roofing panels then, but the snow on the ground will reflecting a lot of light energy off the ground into the siding of the house.

I note that the building is near Chicago & snow load is a design factor. For such locations I think solar siding on the south side would make more sense than solar roofing. That would maximize the power available in winter when cold climate demand is highest & give power even just after a major snowfall.


If you have looked into solar energy as a method for heating your home, panels are usually the first things that come up.

There are, however, other unique methods.

The Solar Heating Aspect You Have Never Heard of Before

The power of the sun is immense. The energy in one day of sunlight is more than the world needs. The problem, of course,

is how does one harness this power. Solar panels represent the obvious solution, but they have their downside. First,

they can be expensive depending upon your energy needs. Second, they do not exactly blend in with the rest of your home.

Passive solar heating represents a panel free method of harnessing the inherent energy found in the sun for heating

purposes. If you come out from a store and open the door of your car in the summer, you understand the concept of passive

solar heating. A wide variety of material absorbs sunlight and radiates the energy back into the air in the form of heat.

Passive solar heating for a home works the same way as the process which overheats your car in the parking lot.

Alex Maddox


World Energy is coming, its going to teach, show explain why and where the industry leaders are going. And why shouldn't they, you are helping put their kids through college

Roof Restoration

Solar energy is the way to go. its been around for many years so why not harness it properly for the future.

Build Your Own Windmill

Solar Energy and Wind Power are definately the way of the future.

So many people want this that they have actually made plans availbe to build your own windmill and solar panels

Commercial Roofing Contractors

It gets even better - one company's developed "peel & stick" solar panels, that have an adhesive backing and can be installed by people who don't have special construction skills. The things take about half an hour to install...

Delaware roofing

This is really great! All that sunlight won't go to waste! All the sun does is heat up the roof. Imagine if you took the energy away from heating your house in the Summer and you used it as necessary to run your A/C.

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