Peel and Stick PowerPly Solar by Lumeta


This summer, Lumeta, Inc., received UL certification for the company’s innovative PowerPly solar product.  PowerPly doesn’t need a rack or mounting structure.  It’s backed with an adhesive and applies directly to the roof, making installation a cinch.

Lumeta says the system can be installed in about 60% of the time of other installations.  The monocrystalline panel installs flush with the roof and weighs roughly 1.9 pounds per square feet, which is approximately 40% lighter than rack-mounted systems.

Pricing has yet to be disclosed, according to Michael Kanellos of Greentech Media.  That said, PowerPly is available directly from Lumeta so long as the order exceeds 250 kW.

All aspects considered, PowerPly results in time, material, and cost savings, but, depending on the installation, the tilt angle may or may not be optimal.  What do you think?




[+] More info on PowerPly Solar by Lumeta.

Credit: Lumeta, Inc.

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  • Philip Proefrock

    Angle would be an issue, especially as you go further north (or south if you’re in the southern hemisphere). Generally, manufacturers talk about the reduced efficiency as being offset by lower cost. You can install a few more panels, if the end cost is cheaper (or so the thinking goes) even though they are less optimally configured.

    My main concern, though, would be (over)heating. PV panels get HOT, and that heat is going to get radiated into the building and the roof. A rack mount panel is not in direct contact with the roof, so there’s some heat dispersion, and the panels keep the roof in shade, as well.

    I’d be really interested in a full analysis that looked at all of those factors. If the directly affixed panels cause increased air conditioning load, you’re getting less benefit from these than you would with rack mounted panels, or some other alternatives.

    • Preston

      I’ve received a few email comments with the same ventilation/cooling concerns that you mention. I’m going to try to touch base with Lumeta to see if the design anyhow mitigates this overheating that you’re talking about. It’s an interesting consideration.

  • Ron

    We have followed this product development for the past few years. It has potential for new membrane roofs and mono-crystalline still offers the highest yield. In areas where ground mounted systems are limited roof tops offer great locations.

    We have heard from one TPO membrane manufacturer that claims laminates will increase the temperature under the membrane by 40 to 50 degrees and will void the warranty. Many projects are now requiring an additional sacrificial membrane to be placed over the roof before the laminates can be attached.

    Rigid modules require racking with roof penetrations, or ballast, but can be cooler due to circulation on the underside of the panels. Laminates offer a larger light spectrum, and less sensitivity to heat, but can be costly if they have to be removed to repair a leaky roof and require more space to reach the same capacity as mono-crystalline.

    A new technology from Solyndra has a niche market with their glass tubes and CIGS thin-film. They can be placed on roof tops without penetrations or glue, but how do they fair during a hail storm or wind borne debris over 130 mph?

    Each technology has it’s advantages and disadvantages, but it is great that we have options for the growing demand for clean energy.

    Ron Phillips
    Solar Source Institute

  • Chaitanya Patankar

    I too feel that heating will surely be an issue. The mounting allows natural air circulation which may remove some of the heat generated…

    Maybe water circulated from underneath the panel can be used to cool the panels. Once the water has absorbed heat, then we may even use that hot water.
    Seems like a good option.
    I’d like to know more about what you people say about this!!

  • Steve

    In new construction, A solar thermal water heating panel with this membrane (LUMETA) laid on top would serve two purposes and solve the heat issue. In addition, all new roofs must have Radiant Barrier Roof Sheathing installed. In all of our homes we install it. The KWH production, roof square footage of coverage, orientation, tilt angle and cost all ply heavily into the introduction of this product.

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