[Tagging] Feature Proposal - RFC - electricity=*

Lukas Richert lrichert at posteo.de
Wed Nov 11 23:45:07 UTC 2020

If I understood you correctly, this would fall under grid-connected 
houses that I mentioned in the last example. This was the specific 
reason why I think namespace tagging seems to be clearer. The house 
would then be tagged with:

building <https://wiki.openstreetmap.org/wiki/Key:building>=house 
electricity <https://wiki.openstreetmap.org/wiki/Key:electricity>=yes
electricity:grid <https://wiki.openstreetmap.org/wiki/Key:electricity>=yes
electricity:access <https://wiki.openstreetmap.org/wiki/Key:electricity>=no

By tagging both electricity:grid=yes and electricity:generator=yes this 
specifies that the building is connected to both and both are routinely 
used. In contrast, it would also be possible to tag 
electricity:generator=backup if the generator is only on when the grid 

Is this what you meant by grid-tie?

Regards, Luke

On 11.11.20 21:49, stevea wrote:
> I hope this doesn't throw too much additional confusion into electricity:grid, but in many parts of the world (including where I am, California) a frequent method for connecting solar panels to both one's house / commercial building and the grid is to do what is known as "grid-tie," sometimes called "net metering."
> Grid-tie means that during sunshine, the solar panels generate and "spin the electric meter backwards" (creating a credit to the customer with the electric company) and at night, when electricity use / loads create a debit (by drawing power directly from the grid / electric company), the meter "spins forward" as usual during power use.  Of course, the idea is that generation and load balance each other out during a billing cycle and this "net metering" nets out to about zero, so the customer has a near-zero bill.
> That is prevalent enough in the world that if OSM is going to design a tag for electricity:grid, it really needs a syntactic accommodation for "grid_tie" or "net_metering" (which are essentially the same).  Especially as I'm not sure if this would go under electricity or electricity:source (which introduce at the same time), I haven't any specific suggestion on a key, tag or namespace, but I think it important to mention what I haven't seen in this discussion.
> SteveA
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