ᐅ Photovoltaic system / heat pump – do you have two meters?
Created on: 2 Jan 2021 07:15
C
chewbacca123
Hello and Happy New Year!
I have a question – since last October, we have had a photovoltaic system on the roof, including a battery storage.
Previously, we had two electricity meters: one for general electricity and one for the heat pump because of the reduced electricity rate.
Our electrician connected the heat pump’s electricity to the general meter due to the photovoltaic system, so we could see how this setup works and whether the heat pump benefits from the solar generation.
In December, we had a consumption of 700 kWh, which is quite high! Our general electricity use is usually around 250 to 300 kWh per month.
I understand that these are the darker months and it should improve from March, with likely much lower electricity consumption as the photovoltaic system generates more and the heat pump uses less.
How do you handle this – do you only have one meter now? Or do you keep the heat pump on a separate meter?
Thanks and best regards
I have a question – since last October, we have had a photovoltaic system on the roof, including a battery storage.
Previously, we had two electricity meters: one for general electricity and one for the heat pump because of the reduced electricity rate.
Our electrician connected the heat pump’s electricity to the general meter due to the photovoltaic system, so we could see how this setup works and whether the heat pump benefits from the solar generation.
In December, we had a consumption of 700 kWh, which is quite high! Our general electricity use is usually around 250 to 300 kWh per month.
I understand that these are the darker months and it should improve from March, with likely much lower electricity consumption as the photovoltaic system generates more and the heat pump uses less.
How do you handle this – do you only have one meter now? Or do you keep the heat pump on a separate meter?
Thanks and best regards
D
Daniel-Sp2 Jan 2021 13:03FoxMulder24 schrieb:
Doesn't BAFA require a separate meter for the heat pump if you have applied for it?Yes, but a sub-meter that records the consumption of the heat pump is sufficient. A second meter from the utility provider for a separate heat pump connection is not required.
A meter (bidirectional meter) for a ground source heat pump combined with a photovoltaic system.
According to my information, when using a separate heat pump meter and wanting to use photovoltaic electricity to operate the heat pump as well, the setup becomes somewhat more complex. In principle, it is possible with increased effort, but it is not a standard installation in the electrical distribution panel.
According to my information, when using a separate heat pump meter and wanting to use photovoltaic electricity to operate the heat pump as well, the setup becomes somewhat more complex. In principle, it is possible with increased effort, but it is not a standard installation in the electrical distribution panel.
H
hampshire2 Jan 2021 16:47One meter and heat pump only produce hot water. In the coming days, a max.storage battery storage system will be installed, followed by a myPV heating element to relieve the heat pump on sunny days with surplus energy, as well as a controller for heating the hot tub. Hot water also serves as an energy storage.
hampshire schrieb:
In the next few days, a max.storage battery storage system will be installed, followed by a myPV heating element to reduce the load on the heat pump during sunny days using surplus energy, and a control system for heating the hot tub. Hot water is also a form of energy storage.What is the size of the installed photovoltaic system, and how large will the battery storage be?
hampshire schrieb:
One meter, however, the heat pump only produces hot water. In the coming days, a max.storage battery storage system will be installed, then there will be a myPV heating element to relieve the heat pump on sunny days with surplus energy and a control system for heating the whirlpool. Hot water is also an energy storage.Are you using a heating element to waste photovoltaic electricity? Don’t you feed into the grid, so this emergency solution is necessary? Especially when a heat pump is available, this seems very unusual.
We have now implemented two meters in metering concept 8, so we can use heat pump electricity and also consume photovoltaic electricity ourselves.
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