Good morning everyone,
I wanted to ask what your house’s electricity consumption is at night when everything is quiet and sleeping, so what is running continuously?
We have a newly built house, moved in summer 2019. Our building services include underfloor heating (air-to-water heat pump), controlled mechanical ventilation (runs at full power 3 times a day for 2 hours each, then reduced), a photovoltaic system, and otherwise the usual nighttime appliances (phone charger plugged into USB outlet, e-bikes charging occasionally, 2 TVs on standby, Alexas on standby, etc.).
At night, we have a continuous consumption of about 232W (with ventilation running at reduced power and when the heat pump is not producing). I can see this in the app for the photovoltaic system. From 0:00 to 6:30 a.m. we consume about 2.8 kWh.
How about you?
Best regards
I wanted to ask what your house’s electricity consumption is at night when everything is quiet and sleeping, so what is running continuously?
We have a newly built house, moved in summer 2019. Our building services include underfloor heating (air-to-water heat pump), controlled mechanical ventilation (runs at full power 3 times a day for 2 hours each, then reduced), a photovoltaic system, and otherwise the usual nighttime appliances (phone charger plugged into USB outlet, e-bikes charging occasionally, 2 TVs on standby, Alexas on standby, etc.).
At night, we have a continuous consumption of about 232W (with ventilation running at reduced power and when the heat pump is not producing). I can see this in the app for the photovoltaic system. From 0:00 to 6:30 a.m. we consume about 2.8 kWh.
How about you?
Best regards
I’m curious to hear your opinions. We have had two meters installed: one for general consumption and one for the pump. The original plan was to support the pump with the photovoltaic system as well.
The solar installer suggested that we try using a special tariff for the pump for the first year and then decide.
Somehow, this doesn’t sit well with us. What is your general perspective on this?
The solar installer suggested that we try using a special tariff for the pump for the first year and then decide.
Somehow, this doesn’t sit well with us. What is your general perspective on this?
D
Daniel-Sp25 Dec 2020 21:50With photovoltaic systems, you only have one meter; otherwise, you can only reduce either the household electricity consumption or the heat pump electricity consumption with the self-produced power, but not both at the same time. At least, that’s how I understand it.
D
Daniel-Sp25 Dec 2020 22:18Well, since most people don’t install a second meter for the heat pump tariff because it’s not cost-effective...
In older buildings with high heat demand, it can be worthwhile. In new builds, probably less or not at all. However, it depends on the heat demand and whether the heat pump is paired with an efficient heat distribution system.
Maybe you can find comparable properties in the heat pump consumption database to estimate your expected consumption.
In older buildings with high heat demand, it can be worthwhile. In new builds, probably less or not at all. However, it depends on the heat demand and whether the heat pump is paired with an efficient heat distribution system.
Maybe you can find comparable properties in the heat pump consumption database to estimate your expected consumption.
I find it really complicated. On one hand, I think the goal should be to maximize self-consumption. We only get a feed-in tariff of about 9 cents. And when the pump is needed, the photovoltaic system usually produces the least amount of energy for self-consumption. Looking at the whole year, would a discounted rate for the pump while it’s in use help more, or is the total of winter production plus the feed-in tariff higher with two meters?
Damn, if they had installed just one meter as originally planned, we wouldn’t even be thinking about this. Now that it’s different, we’re completely uncertain.
Damn, if they had installed just one meter as originally planned, we wouldn’t even be thinking about this. Now that it’s different, we’re completely uncertain.
Consumption 2020
5600 kWh, of which 1600 kWh are attributed to the heat pump.
2460 kWh of the consumption was covered by the photovoltaic system (44%).
9000 kWh were fed into the grid.
It was a year with a lot of home office work, which also explains the high level of self-sufficiency (without storage).
5600 kWh, of which 1600 kWh are attributed to the heat pump.
2460 kWh of the consumption was covered by the photovoltaic system (44%).
9000 kWh were fed into the grid.
It was a year with a lot of home office work, which also explains the high level of self-sufficiency (without storage).
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