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
seth0487 schrieb:
Optimally oriented. But usually self-consumption isn’t that high unless you have large loads during the day, right? We’ll find out next summer, after we’ve moved in. 9.9 kWp, south-facing, 45 degrees.
We are already thinking about how to make the most of the yield. The heat pump will “cool” in summer, the controlled ventilation system will be running, and we will try to schedule the dryer, washing machine, and dishwasher around midday. Windows Server will run 24/7, and so on...
We are hoping for significant savings.
seth0487 schrieb:
Optimally oriented. But usually, self-consumption isn’t that high unless you have significant daytime loads, right?It’s definitely achievable. You have to use at least 30% yourself. My heat pump is intelligently integrated with the photovoltaic system, and my battery storage (7.7kW) manages the rest using forecasts and knowledge of household consumption. The controlled ventilation system uses hardly any electricity, and neither does the heat pump. In the monitoring system, the dishwasher or washing machine actually consume more power.
If I calculate the savings on electricity purchases compared to previous years plus the feed-in tariff from the grid operator, minus the investment costs (loan payments to KfW), I’m in the “plus.”
Yes, photovoltaic systems always make sense as long as there is still a feed-in tariff. If that disappears, you need to consider how to increase the self-consumption rate or design the photovoltaic system along with the battery storage based on self-use.
@blackm88 Are you able to fully use up the battery storage overnight during summer? And how much did you pay for the battery storage?
@blackm88 Are you able to fully use up the battery storage overnight during summer? And how much did you pay for the battery storage?
Is it actually allowed, if you are already a commercial operator because of your photovoltaic system, to sell the photovoltaic electricity directly to end customers? Or do you basically have an exclusive contract with the grid operator?
For example, putting up a sign: Electric car charging from 10 a.m. to 4 p.m. for 0.11 EUR/kWh, coffee 1.50, cake 2.50. Playing with the dog 5 EUR.
For example, putting up a sign: Electric car charging from 10 a.m. to 4 p.m. for 0.11 EUR/kWh, coffee 1.50, cake 2.50. Playing with the dog 5 EUR.
Tolentino schrieb:
If you are already a commercial operator through your photovoltaic system, are you allowed to sell the photovoltaic electricity directly to end customers? Or do you basically have an exclusive contract with the grid operator?
For example, putting up a sign: Charging electric vehicles from 10 a.m. to 4 p.m. for $0.11 per kWh, coffee $1.50, cake $2.50. Playing with the dog $5. Without any polemics, yes, you can and are allowed to do that. However, it is usually not profitable. The subsidies tend to be more lucrative.
Ybias78 schrieb:
And spending over €12,000 on that. As I said, nice to have... I’m more surprised that €200 per month or even more is considered normal. For that, the more expensive air source heat pump or air-to-water heat pump or whatever—it seems expensive to me, especially charging extra for technology on top of consumption!
Dogma schrieb:
I’m not upset about people spending about €2,500 per year on smoking (with about one pack per day). But you’ve made this argument several times already. What’s your problem with smokers? That’s comparing apples and oranges or just sugarcoating!
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