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EcoHome Expert, Inc.

 

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EcoHome Expert Inc. started with the idea of being different, different from every other roofing company across the mid-west. We sought to give our customers detailed and informed roofing evaluations, replace roofs with more than satisfactory roofing materials, and provide our customers with industry leading customer satisfaction.

We saw the need for change; therefore, EcoHome Expert, Inc. was designed and created to be a step above the competition and provide each of our customers with an entirely new experience when it comes to home renovation, restoration and remodeling. We offer a variety of the highest quality products for your home while guaranteeing you the best customer service in the industry.

It’s time for a change; it’s time for home expert.

Kanga Roof

Kanga Roof provides expertly designed and installed roofing systems for both residential and commercial applications. We can provide you everything from a simple home repair to a complete historic restoration.

As always, Kanga Roof will always deliver the highest level of quality and professional workmanship you expect and deserve.

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EcoHome Expert

EcoHome Expert, Inc. is the Midwest's leading authority in the design and installation of Solar Photo-voltaic Electrical Energy Systems. Backed by a 25-year manufacturer warranty. Our systems will provide you the peace of mind knowing your home or business is producing the cleanest, safest, and the most maintenance free source of electrical power available.

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Solar Rockford Installation Costs

by | Feb 1, 2020 | Solar Rockford

As the price of solar panels has plunged, a strange thing has happened. The panels have gone from being a large fraction of installation costs to a relatively minor component. That means all the other things—permits, labor, supporting hardware, and so on—make up the bulk of the cost of putting panels on your roof. While these costs are going down as well, they’re not falling at nearly the same rate as the panels themselves.

All of which raises an intriguing question: if there’s a large fixed cost involved in getting panels on your roof, does it make sense to install more efficient panels, despite their higher costs? A collaboration between researchers and people at solar Rockford power companies have answered this question with a very qualified “yes.” Critically, one of the qualifications is that they assume availability of a technology we haven’t developed yet.

Efficiency Limits

Currently, thin-film solar panels have efficiency percentages in the teens, while silicon has reached the low 20s. While there’s some room for improvements in both of these technologies, progress is probably going to be incremental. There also exist some alternative technologies that have high material costs that aren’t likely to drop substantially any time soon. Beyond those, physics sets a hard cap on the maximum efficiency possible at 33 percent.

But there is a way to get around the expensive materials and physical limits: stacking multiple cells. The materials we use for solar Rockford power typically absorb photons within a specific range of energies. Outside that range, photons will pass through the material as if it were transparent (which, at those wavelengths, it is). By placing a different material, operating on different wavelengths, beneath the first solar cell, it’s possible to have the two cells grab different chunks of the spectrum. In such a system, both cells operate at close to their normal efficiencies.

Thin is In

The researchers focused on thin-film technology, which is dominated by two materials: cadmium telluride (often called cadtel) and CIGS, or copper indium gallium selenide. While these have lower efficiencies than silicon, they’re very cheap to make and have therefore remained competitive for solar Rockford utility-scale installations where space isn’t at a premium. At the moment, nobody is manufacturing multi-junction panels using these two technologies, but the processing involved in existing manufacturing is compatible, meaning there’s no obvious reasons why it couldn’t be done.

Space Saver

For homes, however, space is at a premium, and all costs are shared by a relatively small number of panels—and panels may account for as little as 20 percent of the total price. And here, the most efficient panel comes out on top—in this case, the one with two separate panels stacked on top of each other. It was ahead in LCOE by anywhere from five to eight percent, depending on the climate.

This analysis is sensitive to the total cost of installation, which is dropping and has been targeted for improvement by the US Department of Energy. But the authors of the new paper estimate that these costs would have to be cut by half before a single-layer thin-film panel would make more sense.

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