Republic Uses Solar Panel Covers For Its Landfills

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Landfills may have a negative connotation when it comes to the environment. After all, they are a final destination for waste that isn’t reused or recycled. But Republic Services, one of the largest waste haulers in the U.S. that operates 213 landfills, is partnering on technology that will turn landfill space into solar power.

Last April, Republic installed landfill covers at its Tessman Road landfill that were equipped with photovoltaic (PV) solar collection strips. The strips were less than a quarter inch thick, which allowed for more flexibility than standard solar panels.

Photo: Republic Services

Republic's solar power project won a gold medal from the Texas Council of Engineering Companies Engineering Excellence Awards in December. Photo: Republic Services

The Tessman Road landfill is in San Antonio, Texas, which offers about 300 days of sunshine per year. When combined with the facility’s existing waste-to-energy system, the landfill was able to produce 9 megawatts of power, the equivalent of energy used in 5,500 homes.

Now, Republic is partnering with Carlisle Energy Services, Inc. to further develop the technology, with the hopes that it can be optimized for use on other landfills across the country. In the meantime, Republic will move forward with installing solar strips at its Hickory Road facility in Conley, Ga.

Solar Conditions

It’s important to differentiate what is referred to as landfill cover. While all landfills feature a daily cover consisting of organic material or other waste that is added to keep rain off the landfill and traps gases such as methane inside, solar strips would only be a fit for permanent covers since they couldn’t be removed to add more waste to the landfill.

According to Republic, its landfills feature a final cover that is used for any section that is filled to capacity. This is generally a synthetic plastic liner, but in the case of the solar covers the plastic would be equipped with the solar strips. Material is added so that sections are filled to capacity one at a time, meaning that a landfill can still accept waste even though some sections no longer have room.

The next step is to determine the logistics of placement and establish a market. “You need to factor in the amount of sunshine and angles of the landfills,” said Republic Manager of Media Relations Peg Mulloy. “You also need to have a customer for the resulting energy.”

Carlisle will use Republic’s technology to begin building the landfill covers and will be contributing on the Hickory Ridge project. It will also develop the technology further, according to Mulloy.

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Trey Granger

Trey Granger is a former senior waste stream analyst for Earth911.
Trey Granger

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  1. Ten years ago, I visited a landfill in North Carolina that was using it’s methane gas to power several nearby businesses. It’s a great idea to use full landfills to produce solar energy. I wonder if they could also make use of the methane gas and get energy from both solar and methane from the same landfill.

    If you are interested in learning how you can transition to solar energy or incorporate solar energy into your life, check out for a practical approach.

  2. Those industry-leading light-weight thin-film solar laminate panels used in both the Tessman Road landfill project in San Antonio as well as here in the Hickory Ridge project in Atlanta are made by Uni-Solar Ovonics, a subsidiary of the Michigan company Energy Conversion Devices [ticker symbol ENER].

    The E.P.A estimates there are approximately 100,000 closed landfills {ideally suited for similar solar laminate panel projects}.

    The story as aired on FoxNews…

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