Category: Photovoltaics

Here’s a report from 2GreenEnergy’s local NPR affiliate, KCBX, on net metering, the process by which home-owners with rooftop solar PV sell their excess energy back to the utility, which then goes onto the grid, lowering its average carbon footprint. …

California’s Controversial Solar PV Net Metering Bill Read More »

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From this article on solar energy:  A team of Nanyang Technological University, Singapore (NTU Singapore) researchers has designed a ‘smart’ device to harvest daylight and relay it to underground spaces, reducing the need to draw on traditional energy sources for lighting.

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2Greenenergy’s infographic “The Pros and Cons of Renewable Energy” has been downloaded tens of thousands of times, and I hope it’s helped create a good understanding of some of the promises of the industry, as well as a few of …

Floating Solar PV Read More »

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Here’s a story that an old friend brought to my attention, that describes an idea that, if implemented, would cover canals (that are used for conveyance of water) with solar PV.  The thinking is that they would cool the panels, …

Covering Canals with Solar Panels Read More »

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According to this article linked here, “advances in transparent solar cells mean that soon we might be able to install them into windows and greenhouses.” I’m dubious. The parts of the electromagnetic spectrum that solar panels use are 7% ultraviolet, …

Transparent Solar Cells? Read More »

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My wife and I walk about three miles each morning, far enough for us to pass at least a dozen houses in our neighborhood with solar installations.  I sometimes comment: “That guy’s roof doesn’t have the right exposure,” or “During …

Solar PV Arrays Face Challenges Read More »

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I’m going to say that this is a joke and not a real concept.  Why? a) It’s asinine.  Philadelphia is at 40 degrees north latitude, so on average, you’re losing ~24% simply by installing solar on a flat roof, i.e., …

Solar Project Seems To Be a Joke Read More »

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Here’s a development that’s been a long time in the making: windows that, as they receive heat from the hot, undergo chemical/physical changes and become solar panels. Glass that changes color when light is incident on it has been around …

NREL Developing Solar Windows Read More »

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From a reader: Agrophotovoltaic projects are appearing around the world where solar panels and farming go hand in hand. A more common one is where sheep graze within a solar farm to be living grass clippers that are provided with …

“Bifacial” Solar Panels Read More »

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Are you an expert in solar PV installations? Neither am I. But I think we both know enough about the subject to understand that putting a solar panel under a bridge isn’t a strong idea.

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