ᐅ Heat Pump Connected to Household Electricity or Separate Supply? How to Calculate?
Created on: 9 May 2016 22:57
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Hello,
I am currently trying to work out whether it is worthwhile to connect the air-to-water heat pump to the main household electricity meter or to save money using the heat pump tariff.
Since both the heating electricity tariff / heat pump tariff have a peak rate (HT) and an off-peak rate (NT), the question is how much consumption I can expect at which times. For example: the off-peak rate starts at 9 p.m. and lasts for up to 8 hours. So, I need a rough estimate of how much electricity the heat pump consumes annually under the off-peak tariff.
How can I find this out? So far, I have assumed a total consumption of 2,500 kWh, with 1,500 kWh on the peak rate and 1,000 kWh on the off-peak rate. This was just a rough guess. I would prefer to have a more accurate estimate.
Do you have any reference points?
I am currently trying to work out whether it is worthwhile to connect the air-to-water heat pump to the main household electricity meter or to save money using the heat pump tariff.
Since both the heating electricity tariff / heat pump tariff have a peak rate (HT) and an off-peak rate (NT), the question is how much consumption I can expect at which times. For example: the off-peak rate starts at 9 p.m. and lasts for up to 8 hours. So, I need a rough estimate of how much electricity the heat pump consumes annually under the off-peak tariff.
How can I find this out? So far, I have assumed a total consumption of 2,500 kWh, with 1,500 kWh on the peak rate and 1,000 kWh on the off-peak rate. This was just a rough guess. I would prefer to have a more accurate estimate.
Do you have any reference points?
2500 kWh... power per hour doesn't make much sense.
There are probably many threads about this in the pink forum... one person mentions a distribution of 55% off-peak and 45% peak.
You can probably help optimize this with control systems... for example, heating water only at night, or keeping the heating warmer at night (although you need to check if that is cost-effective).
There are probably many threads about this in the pink forum... one person mentions a distribution of 55% off-peak and 45% peak.
You can probably help optimize this with control systems... for example, heating water only at night, or keeping the heating warmer at night (although you need to check if that is cost-effective).
How much savings do you estimate with, for example, your assumption and how much with BeHaElJa’s? That way, you can roughly estimate whether it’s worth examining the topic in detail. In my opinion, it’s not worth spending a lot of time adjusting the heating schedules for just a few euros in savings, especially if it might mean sacrificing comfort.
I have an almost 50/50 split.
My heat pump consumption is about 3000 kWh per year – which corresponds to 1500 kWh in peak hours and 1500 kWh in off-peak hours.
If you look at providers like E.On, Immergrün, and others – they all offer tariffs specifically for heat pumps. For meters with off-peak/peak pricing, the price is usually the same. In other words, it doesn’t matter whether you install a meter with off-peak/peak rates for the heat pump or not. The heat pump tariff is generally cheaper than the standard household electricity tariff, although electricity prices tend to decrease with higher overall consumption. So, in the end, it’s simply a calculation and depends on whether you want that option or not.
My heat pump consumption is about 3000 kWh per year – which corresponds to 1500 kWh in peak hours and 1500 kWh in off-peak hours.
If you look at providers like E.On, Immergrün, and others – they all offer tariffs specifically for heat pumps. For meters with off-peak/peak pricing, the price is usually the same. In other words, it doesn’t matter whether you install a meter with off-peak/peak rates for the heat pump or not. The heat pump tariff is generally cheaper than the standard household electricity tariff, although electricity prices tend to decrease with higher overall consumption. So, in the end, it’s simply a calculation and depends on whether you want that option or not.
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nordanney10 May 2016 09:21What prices are you expecting for heat pump electricity or household electricity?
Currently, you can get electricity for under 18-20 cents per kWh (including basic fee), but you need to regularly choose or switch providers.
So for you, it’s a calculation example: two tariffs with two meters, or the simpler option (which we chose), with electricity costing just under 19 cents per kWh in the last two years (basic fee already included).
Currently, you can get electricity for under 18-20 cents per kWh (including basic fee), but you need to regularly choose or switch providers.
So for you, it’s a calculation example: two tariffs with two meters, or the simpler option (which we chose), with electricity costing just under 19 cents per kWh in the last two years (basic fee already included).
S
Sebastian7910 May 2016 10:17nordanney schrieb:
Currently, you can get electricity for under 18-20 cents (including basic fee), but you need to regularly choose or switch providers.However, to be fair, you are not allowed to use this electricity for your heat pump – if you do, the additional meter for the heat pump becomes worthwhile. Otherwise, not...
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