[Talk-GB] Solar Panels

[Steven Hirschorn]

Thanks Gregory,

Here's one I spotted - would that be PV then? Or something else entirely?
https://www.openstreetmap.org/#map=21/51.4899334/-0.0857639

Is there a standard note to add when we're not sure? It feels like they're
worth tagging when I find them even if I'm not sure.

And I presume "direction" is irrelevant when they are on a flat roof?

On Sun, 9 Jan 2022 at 19:34, Gregory Williams <gregory at gregorywilliams.me.uk>
wrote:

> Steven,
>
> Definitely still mapping them. I see that Jeremy mentioned my
> comparison site below. The rate of mapping has slowed a bit since the
> quarterly project a while back, but is still making good progress.
>
> As to the PV vs solar thermal, it's not always possible to tell from
> aerial imagery. Solar thermal installations tend to be quite small,
> typically the size of one or two PV modules. So installations appearing
> larger than this in aerial imagery are more likely to be PV. Also, I
> think that solar thermal installations tend to be more southerly
> facing, whereas PV installations can have a bit more flexibility
> (though are still most effectively the more southerly they face).
>
> Ultimately a ground survey is best. Perhaps you could add a note for
> installations where you're not certain. Then, even if you're not local,
> another local mapper could go and check.
>
> Regards,
>
> Gregory
>
> On Sun, 2022-01-09 at 17:53 +0000, Steven Hirschorn wrote:
> > So I've read through the Wiki pages now and besides a mention
> > somewhere to distinguish between thermal and photovoltaic panels, I
> > don't see any advice on how to tell them apart from aerial imagery?
> > The Overpass query above (thanks!) shows a few thermal panels though
> > even on a single roof, similar looking panels can have been tagged as
> > a mixture of thermal and PV. eg on this
> > roof: https://www.openstreetmap.org/#map=21/51.6480733/-0.5313908
> > and here: https://www.openstreetmap.org/#map=21/51.6480733/-0.5313908
> > Is there a tell-tale sign that something is thermal rather than
> > photovoltaic? Or if I tag them all as PV will someone check them?
> >
> >
> > On Sun, 9 Jan 2022 at 12:19, Jeremy Harris <jgh at wizmail.org> wrote:
> > > On 09/01/2022 10:14, Steven Hirschorn wrote:
> > > > While working on tagging other things, I often see rooftop solar
> > > > installations that aren't tagged yet. I did a quick search
> > > > through old
> > > > talk-gb messages but still have a couple of questions:
> > > > - are we still mapping them?
> > >
> > > See http://osm.gregorywilliams.me.uk/solar/
> > >
> > > Useful overpass query: https://overpass-turbo.eu/s//10iv
> > > _______________________________________________
> > > Talk-GB mailing list
> > > Talk-GB at openstreetmap.org
> > > https://lists.openstreetmap.org/listinfo/talk-gb
>
>
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