ᐅ Do photovoltaic systems and heat pumps share similar performance characteristics or operational experiences?
Created on: 9 Mar 2016 22:27
T
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.
It’s really just a bit of fun. You do realize that it’s only a matter of a few cents per flush or drying cycle (comparing self-generated electricity versus external electricity), right? A single beer at the pub cancels out the savings from a whole month of perfectly optimized drying and flushing.
Alright then, but you’ve certainly earned that one extra beer...
Alright then, but you’ve certainly earned that one extra beer...
S
Sebastian792 Sep 2016 22:43And why lay an empty conduit then? And why 20,000 euros?
Thanks to half-knowledge, or what?
Thanks to half-knowledge, or what?
9.9 kWp and a battery? 20k? Roughly?
Conduits reportedly "cost nothing" according to the general contractor – he probably meant figuratively just very little, not literally nothing. But maybe photovoltaic systems plus storage will become profitable someday? It’s possible. Then it’s upgradeable if the kWp costs 300 EUR and the 30 kWh battery can be had for 500 EUR total, and the inverter lasts 40 years...
Edit: One is allowed to dream, right...
Conduits reportedly "cost nothing" according to the general contractor – he probably meant figuratively just very little, not literally nothing. But maybe photovoltaic systems plus storage will become profitable someday? It’s possible. Then it’s upgradeable if the kWp costs 300 EUR and the 30 kWh battery can be had for 500 EUR total, and the inverter lasts 40 years...
Edit: One is allowed to dream, right...
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