ᐅ Photovoltaics and Heat Pumps – Meter Confusion and Cost Issues
Created on: 17 Jul 2020 20:29
K
kati1337
Hello everyone,
does anyone here use an air-to-water heat pump combined with a photovoltaic system?
I’m currently unsure whether we will get a dual-tariff meter / two-rate meter, or just two separate regular meters (one for household electricity, one for the heat pump electricity).
We have an all-in-one unit with controlled living space ventilation plus air-to-water heat pump integrated.
Now I saw the heat pump tariff from EWE, which states “18 hours of operating time per day,” something about a 6-hour interruption and a buffer. This probably isn’t compatible with us, as I have never heard that our device should have no power for 6 hours during the day.
Does that mean I generally cannot use the heat pump electricity tariff? Or do I just have to choose a different provider?
On Check24, I find several heat pump tariffs. Many of them show the same cent price for peak and off-peak times. Does that mean I can use these tariffs even if I only have a “regular” separate meter for my heat pump (not a dual-tariff meter)?
And can someone tell me how much an additional meter for the heat pump costs? I keep reading that heat pump tariffs are not always worthwhile because the extra meter costs more. Does this only apply to the dual-tariff meter, or does a regular second meter also incur an additional monthly fee?
Last but not least – how does it work if you have a photovoltaic system but also two meters? We definitely want to use the photovoltaic electricity for both – the air-to-water heat pump AND the household electricity – to maximize our own consumption of the PV electricity. Is this easily possible with two meters? How is that typically set up?
Sorry for the many basic questions. I’m trying to get a better understanding of this topic and our electrical contractor is not our favorite trade – some might remember the previous troubles. That’s why I want to keep an eye on it and understand exactly what they are installing.
does anyone here use an air-to-water heat pump combined with a photovoltaic system?
I’m currently unsure whether we will get a dual-tariff meter / two-rate meter, or just two separate regular meters (one for household electricity, one for the heat pump electricity).
We have an all-in-one unit with controlled living space ventilation plus air-to-water heat pump integrated.
Now I saw the heat pump tariff from EWE, which states “18 hours of operating time per day,” something about a 6-hour interruption and a buffer. This probably isn’t compatible with us, as I have never heard that our device should have no power for 6 hours during the day.
Does that mean I generally cannot use the heat pump electricity tariff? Or do I just have to choose a different provider?
On Check24, I find several heat pump tariffs. Many of them show the same cent price for peak and off-peak times. Does that mean I can use these tariffs even if I only have a “regular” separate meter for my heat pump (not a dual-tariff meter)?
And can someone tell me how much an additional meter for the heat pump costs? I keep reading that heat pump tariffs are not always worthwhile because the extra meter costs more. Does this only apply to the dual-tariff meter, or does a regular second meter also incur an additional monthly fee?
Last but not least – how does it work if you have a photovoltaic system but also two meters? We definitely want to use the photovoltaic electricity for both – the air-to-water heat pump AND the household electricity – to maximize our own consumption of the PV electricity. Is this easily possible with two meters? How is that typically set up?
Sorry for the many basic questions. I’m trying to get a better understanding of this topic and our electrical contractor is not our favorite trade – some might remember the previous troubles. That’s why I want to keep an eye on it and understand exactly what they are installing.
M
Martial.white28 Jul 2020 21:15Since our house used to be a two-family home, it has two meters. Therefore, I have some experience with this topic.
In short: Only one meter with photovoltaic!
Otherwise, things get complicated with feed-in / smart meters. Also, as soon as the photovoltaic system is connected to a second meter, electricity suppliers—or the tax office, for example—might interpret the situation very unfavorably. Then additional requirements may suddenly need to be met, and so on... From that point on, we decided to connect the photovoltaic system to one meter and draw the electricity for the upper floor (second meter) from the grid, while feeding surplus energy back into the grid.
Soon, the second meter will be removed, and with it, the basic fee will no longer apply.
In short: Only one meter with photovoltaic!
Otherwise, things get complicated with feed-in / smart meters. Also, as soon as the photovoltaic system is connected to a second meter, electricity suppliers—or the tax office, for example—might interpret the situation very unfavorably. Then additional requirements may suddenly need to be met, and so on... From that point on, we decided to connect the photovoltaic system to one meter and draw the electricity for the upper floor (second meter) from the grid, while feeding surplus energy back into the grid.
Soon, the second meter will be removed, and with it, the basic fee will no longer apply.
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