Archive for November 19th, 2019

Exactly 10 years ago it took just a few hours to install 16 photo-voltaic panels on our (flat) roof. We chose Solyndra panels, because of the ease of installation (that part was certainly true). We knew those solar tubes would be a bit less efficient than traditional flat panels, but less weight on the roof counted for something too, in our eyes. Given the available surface on the roof, we hoped to cover somewhere between 40% and 50% of our annual electricity consumption.

Unfortunately the end of 2019 was also the period when Solyndra started having problems delivering on their promises. I suspect that the panels we finally received are not as productive as promised. In numbers: we’re only now (calendar year 2018) seeing the (almost) 40% coverage of our yearly electricity consumption that we aimed for, and that’s because one of children isn’t living here anymore, not because the panels are so powerful ;-) Oh, and we also tried to reduce our consumption, if only by a fraction of the total.


The reflective foil below thee panels isn’t white anymore…

Even so: according to the pvoutput.org website where I keep track of the numbers, we have already saved more than 22 tons of CO₂. That’s not earth-shattering, but it’s a start. In theory, we’re only halfway through the lifetime of the installation. We’ll see how that turns out a decade from now ;-)

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