Recent content by Mark_T

The Powerwall is covered by the Fleet API, but at least for the moment it is not a requirement. I wouldn't be surprised if that changes at some point though...

Not yet had to worry about the 'Fleet' API as I'm not trying to connect to a Tesla vehicle at this time, just the PW2... So I'm using the standard Tesla Powerwall integration and the Tesla Custom integration just for setting the battery reserve. The only bit that needed a little effort was...

Easy enough to fix, some suppliers are already only allowing customers to get a lower tariff rate for the power that actually goes to the EV, not the entire home consumption. So you'll have a choice, use the granny charger and pay the full tariff rate, or get the reduced rate but have the tax...

The APR on my Model S from 2018 was only 2.5%, not sure there was actually room for any commission on that...

There was also an API change, so I'd guess we are in for a few days of fixes to correct the problems they have introduced.

The availability of the extra slots outside the low-rate period does seem to vary a lot between customers and regions, but I do get a lot of early morning slots where IOG is preferring to charge up to 08:00 rather than between 00:30-03:00. Not an issue as I use HA to deal with this situation...

You do, but if you look into the details, the deemed export is due to a lack of properly calibrated export meters, with the provision that if a properly calibrated meter is fitted then the deemed export can be replaced by metered export. A smart meter is just such a meter, so some of the FiT...

A new Powerwall ships with about 14.7kWh reported capacity

Ignore the application form, there should be a letter from the DNO approving the G99 application and stating the new approved export limit in plain language.

Did your DNO decline approving a higher export limit? We also have 2 Powerwalls and 4kWp solar, and UKPN approved 13.68kVA for us, but perhaps there are local constraints limiting your export? Even with that approval the site limit on Tesla was left set at 5kVA by the installers, but one quick...

There are some important nuances to the rules though, if you pay by DD the supplier is still allowed to use those payments to pay for previously un-billed energy use, similarly if you've received any balance refunds they are allowed to reverse those, so it isn't quite as simple as it might seem...

Exactly, if you opt to use a beta tariff, then you do need to pay enough attention to notice when you do not get an accurate bill each month...

Exactly, unless your Solar PV is old enough to benefit from a FiT payment there is more to be made from exporting the excess than you save by charging the EV with it...

... as long as you are not actively preventing IOG from charging outside that window then all is good... For me, IOG very frequently prefers to charge up to 08:30 or later in the morning rather than between 00:30-0300, but that works as I don't need the car earlier than that and HA takes care...

I've got 2xPW2 and 4kWp of solar and use IO, no 'faff' at all since they added the Zappi as a supported EVSE integration. Fully automated using HA to protect the PW2 when charging outside the 23:30-05:30 low rate period. Running happily with an 80A main fuse and the limiter set on the Zappi...