[Talk-GB] RFC: Solar panel mapping in the UK

Dan S danstowell+osm at gmail.com
Wed Apr 10 22:01:06 UTC 2019

Hi all,

Thanks for the comments on solar panel mapping. (Plenty of mapping
happening already: thousands of UK solar panels added to the database
in the past month.) A few small responses:


I'll defer to Russ's tagging advice about solar farms: power=plant
polygon (or sometimes multipolygon) as the outline of a solar farm,
with power=generator areas contained within it for the blocks of
panels. Previously, I was mapping solar farms as relations, but I'm
easily persuaded!

I don't have any advice about landuse/landcover other than that it's a
fairly separate issue, since those tags are not essential to the solar
power mapping.

I've been adding some solar farms that are listed in the REPD list on
the wiki. For those ones I've used a tag "repd:id=*" which I hope
makes it easy to identify them using the ID number in that database.
Some solar farms have more than one entry in the REPD (they submit a
new application form when they have an expansion).


For various reasons, if we can get solar installations mapped as areas
not just nodes, that'll be helpful. Areas will be more useful than
module-counting. However, I've noted that the imagery doesn't always
make this easy for rooftop solar: clarity is variable per region.

Is there any good way to tag the vertical tilt of a panel? I know in
many cases we won't be able to measure it well, but I thought I'd ask.
For example, there's roof:angle=* for the slope of a roof, which is a
mildly related concept.


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