[Tagging] Feature Proposal - RFC - electricity=*

Lukas Richert lrichert at posteo.de
Sat Nov 14 19:53:56 UTC 2020

Hi Paul,

I'm not quite sure if I correctly understood what you meant, so 
correct/explain more if I get it wrong! My sole goal with the 
infrastructure part of the tagging is to specify if a connection exists 
sometimes, always or never. In the case of solar panels, even though 
they don't produce electricity at night, they are always connected so 
the building would then be tagged as 'electricity:generator=yes'.

So far, I've not even attempted to incorporate the method with which the 
generator is connected to the grid (if there is a connection). If think 
for that it would be easiest to have a separate tag. Overall, I think I 
mean to only generally cover all cases, but perhaps with not as much 
detail as you envision. I think that needs more and different tags to 
keep things clear.

As to the electric vehicles, I think it would be fine to then tag 
electricity:battery=yes and then have a separate tag like 
battery:type=electric_vehicle or some such.

Cheers, Lukas

On 14.11.20 18:43, Paul Allen wrote:
> On Sat, 14 Nov 2020 at 17:24, Lukas Richert <lrichert at posteo.de 
> <mailto:lrichert at posteo.de>> wrote:
>     The possible values for any of these subkeys is then yes/backup/no
>     (i.e. electricity:battery=no), where *yes *means the device/grid
>     is always connected and it is usually (daily?) used. The term
>     *backup* then means that the device is only used when the usual
>     device reaches its capacity or fails, so it is not always
>     on/connected.
> I'm not committing to supporting or opposing this scheme, just 
> bikeshedding.
> But it's a BIG bikeshed.
> It isn't as simple as your tagging scheme makes out.
> A photovoltaic system for a house may charge batteries, which come into
> play when there is no sun (it's night or it's too cloudy).  There is 
> no grid
> connection at all.
> A photovoltaic system for a house may provide electricity when it can,
> with the grid providing electricity when the photovoltaic system cannot.
> There are no batteries involved.
> A photovoltaic system for a house not only provides electricity for the
> house, it also feeds electricity into the grid (for which the owner gets
> a rebate on the bill) with the grid supplying power when the
> photovoltaic system cannot.  There are no batteries involved.
> As either of the preceding two cases, but with batteries also involved.
> Electric vehicles may be used as storage capacity for the grid.  When
> they're on charge (usually at night) they may supply power to the
> grid to cope with brief increases in demand (people putting the
> kettle on during TV adverts).  I don't know if any current systems
> do so, but it would be possible for the car to provide household
> electricity for a while during a power outage.
> I've probably missed something.  Your tagging either needs to
> cover less cases or more.
> -- 
> Paul
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