ᐅ Electric Meter for Heat Pump in Combination with BAFA Subsidy and Photovoltaic System
Created on: 20 Aug 2021 07:08
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Markus254
Hello everyone,
I believe this topic has been discussed several times, but I couldn’t find a clear answer in the forum:
We are installing a heat pump funded by BAFA, which will also be powered by a photovoltaic system.
The heat pump will be supplied through the regular electricity tariff as well as the photovoltaic system.
The domestic hot water and heating water will be heated partly by the heat pump and partly by an electric immersion heater to use the photovoltaic electricity.
How many electricity meters do we need for the heat pump? Is a three-phase electricity meter sufficient (heat pump + immersion heater) to measure all power consumption?
Is an additional heat meter necessary?
Thanks and best regards,
Markus254
I believe this topic has been discussed several times, but I couldn’t find a clear answer in the forum:
We are installing a heat pump funded by BAFA, which will also be powered by a photovoltaic system.
The heat pump will be supplied through the regular electricity tariff as well as the photovoltaic system.
The domestic hot water and heating water will be heated partly by the heat pump and partly by an electric immersion heater to use the photovoltaic electricity.
How many electricity meters do we need for the heat pump? Is a three-phase electricity meter sufficient (heat pump + immersion heater) to measure all power consumption?
Is an additional heat meter necessary?
Thanks and best regards,
Markus254
M
Markus2547 Sep 2021 07:38Somehow it’s going in circles 😀 … The flange heater is the heating element in the heat pump that can run purely electrically if needed (e.g., if the heat pump fails). 1 kW input, 1 kW heat output. When everything functions properly, the heat pump does this 100%, including the amplification effect. 1 kW input, 3 kW heat output.
The general question was how to wire the heat pump with the photovoltaic system so that they share the same electrical circuit and still comply with BAFA regulations. I think using a bidirectional meter for both the heat pump and the photovoltaic system, while giving the heat pump its own intermediate meter, should work. The required heat meter is integrated.
The general question was how to wire the heat pump with the photovoltaic system so that they share the same electrical circuit and still comply with BAFA regulations. I think using a bidirectional meter for both the heat pump and the photovoltaic system, while giving the heat pump its own intermediate meter, should work. The required heat meter is integrated.
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RotorMotor7 Sep 2021 08:33Please tell me the model.
It is quite likely that the heat pump also has an electricity/energy meter integrated.
It is quite likely that the heat pump also has an electricity/energy meter integrated.
Markus254 schrieb:
The question was generally about how to connect the heat pump with the photovoltaic system so that they are on the same electrical circuit and still comply with BAFA regulations. I think using a bidirectional meter for the heat pump and photovoltaic system, with the heat pump having its own sub-meter, should work. The required heat meter is integrated in the unit. Hello Markus,
I have the same setup with a BAFA-funded heat pump and rooftop photovoltaic system, so I am also interested in this topic, although I cannot contribute much myself. At the same time, I don’t quite understand where the actual problem lies. Is there really something special to consider regarding the electrical connection, as long as the heat pump has the required integrated meters? Isn’t that already one of the criteria for the heat pump’s eligibility for funding, regardless of the external electrical connection?
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Markus2547 Sep 2021 10:17RotorMotor schrieb:
Please tell us the model.
It is quite likely that the heat pump also has an integrated electricity/energy meter. This is the Vitocal 200-S AWB-E-AC 201.D0
Markus254 schrieb:
The general question was how to interconnect a heat pump with a photovoltaic system so that they are on the same electrical circuit and still comply with BAFA requirements. I believe using a bidirectional meter for the heat pump and photovoltaic system, and giving the heat pump its own submeter should work. The required heat meter is integrated into the unit. Exactly like that, although this setup does not allow for a discounted electricity tariff specifically for heat pumps. Depending on the region, this is usually not a major issue since there is hardly any price advantage anyway.
You can skip the intermediate meter because the function required by BAFA to measure the electricity consumption and heat output of the heat pump is already integrated into the heat pump itself—at least in our Vitocal (model 333):
A special electricity tariff for the heat pump is usually not necessary if you have a photovoltaic system anyway. So, a standard two-way meter typical for photovoltaic systems is sufficient, and that’s it.
A special electricity tariff for the heat pump is usually not necessary if you have a photovoltaic system anyway. So, a standard two-way meter typical for photovoltaic systems is sufficient, and that’s it.
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