ᐅ Do photovoltaic systems and heat pumps share similar performance characteristics or operational experiences?
Created on: 9 Mar 2016 22:27
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toxicmolotof
Hello dear forum members,
Since Monday afternoon, my photovoltaic system has been up and running, and I have to say... I can’t stop smiling.
Here are the details:
Today’s performance:
The gray line represents household consumption, the blue and red areas show production, where the blue part was self-consumed and the red part was sold.
You can clearly see the washing machine running in the morning, the regular starts of the heat pump, midday consumption, and even the not-so-optimally started dishwasher after 6 p.m.
For a (very good) day in March, I’m more than satisfied. The only thing is that the heat pump in the early morning isn’t yet running as efficiently as I’d like. But I guess only a battery would help with that, and that still seems uneconomical to me.
Since Monday afternoon, my photovoltaic system has been up and running, and I have to say... I can’t stop smiling.
Here are the details:
- 5.4 kWp (18 modules at 300 W each)
- Peak power limitation 70% soft
- Flat roof, mounting angle 10°
- Orientation southwest, about 45° off south
- Feed-in to household electricity including heat pump
- Surplus energy sale
- no battery storage
Today’s performance:
The gray line represents household consumption, the blue and red areas show production, where the blue part was self-consumed and the red part was sold.
You can clearly see the washing machine running in the morning, the regular starts of the heat pump, midday consumption, and even the not-so-optimally started dishwasher after 6 p.m.
For a (very good) day in March, I’m more than satisfied. The only thing is that the heat pump in the early morning isn’t yet running as efficiently as I’d like. But I guess only a battery would help with that, and that still seems uneconomical to me.
toxicmolotow schrieb:
The investment was 7,900 euros net or 9,400 euros gross. So every small car costs more.Have you checked or used any subsidies or grants?
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Bauexperte10 Mar 2016 09:44nordanney schrieb:
But it was quite an expensive quote, even though these aren’t "cheap modules." What leads you to that assumption?Regards, Bauexperte
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nordanney10 Mar 2016 10:08Bauexperte schrieb:
What makes you assume that?
Regards, Bauexperte My own system with German modules, which were cheaper. I paid just over €1,300 per kWp (net) – two years ago, and prices have actually dropped a bit since then…
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Bauexperte10 Mar 2016 10:19nordanney schrieb:
.... meanwhile the prices have actually dropped a little more... That’s correct. I just checked again in the latest offer from our system partner.
With Tox, however, there are additional costs for the mounting; I think they are reasonable.
Regards, Bauexperte
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nordanney10 Mar 2016 10:26Bauexperte schrieb:
That's correct. I just double-checked the last quote from our system partner.
With Tox, there are additional costs for the mounting structure; I think those are reasonable.
Regards, Bauexperte Argh – being able to read carefully is an advantage. Right, that could explain the price difference!