3 ms·
Where do you live? What latitude? That can have a big impact. Also note that the publication was 2021, not 2011 (typo by parent)
by szvsw 2y ago
Where do you live? What latitude? That can have a big impact. Also note that the publication was 2021, not 2011 (typo by parent)
- haizhung 2y agoAbout 52.5 deg north. How much difference can that make?
- szvsw 2y agoIt can definitely make a big difference. DC’s latitude is 38 degrees. That’s about the same gap to Miami (25 degrees). Think about shining a flashlight perpendicular to the ground vs at an angle. Beyond the dynamics of direct irradiance, there’s also weather to consider- if you live in a significantly cloudier area (which might be possible, assuming you live in Canada or Germany/netherlands/etc based off that latitude), that will obviously affect output. And then there is also things like building-to-building shading, in case you live in a dense area… lots of things can affect this kind of calculation. Try playing around with the National Renewable Energy Laboratory’s PVWatts calculator: https://pvwatts.nrel.gov/pvwatts.php https://pvwatts.nrel.gov/pvwatts.php