10 MWh is a lot for just 3-4 months. Do you have a Jacuzzi and heated pool? 😅
For the months you can’t produce enough electricity, you buy the electricity during the cheap hours and then use it during peak hours, when it is most expensive.
Heat pump and a cold climate. Now I wish I had a jacuzzi! Curse you! A heated pool or jacuzzi or something outdoors would be peak luxury for me tbh.
There are no cheap hours in the winter, there are kinda expensive hours and super expensive hours. Worst I’ve seen is 5 euros per kilowatt hour, which is the price cap. Luckily that only happens a couple of times a winter, if that.
I did just find out that some providers allow you to keep a fixed buy price even when you also sell back to the grid (which can’t be fixed price). So that could change the math quite a bit.
There’s also the option of simply donating the excess to the grid (not having a sell contract) lol
Where do you live? I also have a heat pump for hot water and floor heating. Compared to winter, it barely runs in the summer months, but sounds like you live in a colder place than Danmark?
There’s still money to be made (saved), by buying during the cheapest hours and using it during the expensive hours.
I can save about 1-2 EUR every day by buying during cheap hours and using it during expensive hours. Days I can just use the sun, I of course save even more, because I barely have to buy any electricity, except for a few hours at night.
Compared to winter, it barely runs in the summer months, but sounds like you live in a colder place than Danmark?
Ha, I know you’re an authentic Dane by how you spelled Denmark! I live in Estonia, slightly colder, but not the coldest. I haven’t yet gotten around to installing an air-to-water or ground source pump yet, so mine only heats the home, not the water (meaning I spend a whole lot of electricity on my regular boiler year round). It’s been running 24/7 since October currently, more or less. I could just go heat my furnace right now and turn off the pump, but that’s extra work + firewood costs money too. Long term goal is to replace the furnace completely, with a ground-source heat pump with vertical collectors since my garden isn’t big enough for horizontal.
There’s still money to be made (saved), by buying during the cheapest hours and using it during the expensive hours.
Definitely same here, but I have a fixed price package and in the winter, the lows barely ever get to the level I pay year-round. This makes more sense for me since I use much less electricity (barely any) in the summer compared to the winter.
However, as I said previously, I discovered that it’s now possible to keep the fixed price for my electricity purchasing. If I got a couple of panels, they’d more than cover my electricity use in the summer and I wouldn’t have to worry about the price - and in the winter, I’d still be paying less than everyone on a variable rate plan like I do now. If I could also install some small turbines on the roof, that could actually halve my power bills in the winter too.
Only trouble is, I bought cheap roofing materials knowing I won’t have any use for solar panels anytime soon, and it won’t support the weight lol. Oh well. I saved like a thousand or two thousand euros compared to more expensive roofing materials at least.
Oh I didn’t realize such small capacity batteries were worth the installation effort in a home. Does that 1300 include the inverter and battery management system? What about the installation of the interconnect?
(I rent so I don’t know much about this stuff, thank you for your time!)
10 MWh is a lot for just 3-4 months. Do you have a Jacuzzi and heated pool? 😅
For the months you can’t produce enough electricity, you buy the electricity during the cheap hours and then use it during peak hours, when it is most expensive.
Heat pump and a cold climate. Now I wish I had a jacuzzi! Curse you! A heated pool or jacuzzi or something outdoors would be peak luxury for me tbh.
There are no cheap hours in the winter, there are kinda expensive hours and super expensive hours. Worst I’ve seen is 5 euros per kilowatt hour, which is the price cap. Luckily that only happens a couple of times a winter, if that.
I did just find out that some providers allow you to keep a fixed buy price even when you also sell back to the grid (which can’t be fixed price). So that could change the math quite a bit.
There’s also the option of simply donating the excess to the grid (not having a sell contract) lol
Where do you live? I also have a heat pump for hot water and floor heating. Compared to winter, it barely runs in the summer months, but sounds like you live in a colder place than Danmark?
There’s still money to be made (saved), by buying during the cheapest hours and using it during the expensive hours.
I can save about 1-2 EUR every day by buying during cheap hours and using it during expensive hours. Days I can just use the sun, I of course save even more, because I barely have to buy any electricity, except for a few hours at night.
Ha, I know you’re an authentic Dane by how you spelled Denmark! I live in Estonia, slightly colder, but not the coldest. I haven’t yet gotten around to installing an air-to-water or ground source pump yet, so mine only heats the home, not the water (meaning I spend a whole lot of electricity on my regular boiler year round). It’s been running 24/7 since October currently, more or less. I could just go heat my furnace right now and turn off the pump, but that’s extra work + firewood costs money too. Long term goal is to replace the furnace completely, with a ground-source heat pump with vertical collectors since my garden isn’t big enough for horizontal.
Definitely same here, but I have a fixed price package and in the winter, the lows barely ever get to the level I pay year-round. This makes more sense for me since I use much less electricity (barely any) in the summer compared to the winter.
However, as I said previously, I discovered that it’s now possible to keep the fixed price for my electricity purchasing. If I got a couple of panels, they’d more than cover my electricity use in the summer and I wouldn’t have to worry about the price - and in the winter, I’d still be paying less than everyone on a variable rate plan like I do now. If I could also install some small turbines on the roof, that could actually halve my power bills in the winter too.
Only trouble is, I bought cheap roofing materials knowing I won’t have any use for solar panels anytime soon, and it won’t support the weight lol. Oh well. I saved like a thousand or two thousand euros compared to more expensive roofing materials at least.
Saving 1-2 EUR per day with a 6000+ EUR battery pack sounds…not worth it.
A 5 kWh battery is about 1300 EUR, with a 10 year warranty.
1-2 EUR is minimum saved pr. day. Let’s just say I only save 1 EUR pr. day. That’s 365 EUR/year. RoI is max 3.5 years.
Oh I didn’t realize such small capacity batteries were worth the installation effort in a home. Does that 1300 include the inverter and battery management system? What about the installation of the interconnect?
(I rent so I don’t know much about this stuff, thank you for your time!)
I already had the inverter and solar panels for a few years, when I added the battery pack.
BMS: 300 EUR Battery (5 kWh): 1300 EUR
I can then stack batteries on top of each other op to 5 batteries in total.
If you were to get the same setup, excluding solar panels, the price would be 3200 EUR.
I’m sure that could be done a lot cheaper though, if you only wanted a battery pack and no solar. Then you could probably get a much cheaper inverter.
I have 2000 kWp solar setup, which roughly saves me about 300 EUR/year.