Today at 10:00 AM, the installation of our new photovoltaic system began.
The approval from the city was granted last week.
Currently, the substructure (Schletter) is being installed.
Tomorrow, the panels will be mounted and the strings routed into the house.
Further electrical installation / inverter setup has not yet been scheduled.
I will keep you updated.
This is an info thread to show how long this process takes, from the first bracket on the roof to commissioning.
Best regards,
Thorsten
The approval from the city was granted last week.
Currently, the substructure (Schletter) is being installed.
Tomorrow, the panels will be mounted and the strings routed into the house.
Further electrical installation / inverter setup has not yet been scheduled.
I will keep you updated.
This is an info thread to show how long this process takes, from the first bracket on the roof to commissioning.
Best regards,
Thorsten
PS: I’m already thrilled with this thing.
The system started operating at 1:30 PM.
Cloudy sky with occasional sun: briefly reached 5 kW output.
Now it’s fully cloudy again, with 1.2 to 1.5 kW output. The east string is still contributing too, which surprises me.
That was easily enough to run a dishwasher, and right now the washing machine is running completely on free electricity.
So far, the system has produced 5.3 kWh in this very short time.
It doesn’t make a huge difference, but it’s fun.
Taking a short break from home office, I had to buy something to eat at the supermarket next door. In the store I realized: I forgot my crutches. I was so stunned I nearly fell over. First time in 8 weeks without crutches, just like that, simply *forgot* and I managed.
07.04.15... the day is going well.
The system started operating at 1:30 PM.
Cloudy sky with occasional sun: briefly reached 5 kW output.
Now it’s fully cloudy again, with 1.2 to 1.5 kW output. The east string is still contributing too, which surprises me.
That was easily enough to run a dishwasher, and right now the washing machine is running completely on free electricity.
So far, the system has produced 5.3 kWh in this very short time.
It doesn’t make a huge difference, but it’s fun.
Taking a short break from home office, I had to buy something to eat at the supermarket next door. In the store I realized: I forgot my crutches. I was so stunned I nearly fell over. First time in 8 weeks without crutches, just like that, simply *forgot* and I managed.
07.04.15... the day is going well.
T21150 schrieb:
Short break from working at home—I had to buy something to eat at the supermarket next door. In the store, I realized: forgot my crutches. I was so stunned that I almost fell. The first time in 8 weeks without crutches, just like that, simply *forgotten*, and it worked.
07.04.15.... the day is good.I’m happy for you. You mentioned elsewhere that you had a serious accident that changed your whole outlook on life (as can also be seen in post #30). I’m keeping my fingers crossed for you.
f-pNo schrieb:
what changed your whole attitude towards life (as can also be seen in post #30). I’m keeping my fingers crossed for you.Thank you very much.
No – fortunately, my overall attitude towards life hasn’t changed; I have always been a positive, optimistic yet realistic thinker.
But you are right: these days, I get upset about even less than before.
A broken false rib and eight weeks of misery – it really makes you reflect...
Best regards
and thanks again.
Thorsten
The photovoltaic system has completed its first days of operation—still without battery storage, internet connection, or monitoring.
Yesterday the weather was fairly good. The photovoltaic system generated 27 kWh. The solar thermal system produced 9 kWh. So the house generated roughly 36 kWh of mostly environmentally friendly energy yesterday.
From 8:30 a.m. until about 7:00 p.m., whenever I checked the display, the output was consistently above 2,500 watts. I missed the peak at solar noon around 1:33 p.m. because the first clouds rolled in. The maximum power I observed was 4,500 watts, but as I said, I couldn’t watch the system constantly. The individual strings delivered solid performance, but I haven’t yet determined the theoretical maximum combined output.
Due to a celebration, we used a power-hungry electric grill for weaving for two hours yesterday afternoon. This was the only time during the day when there was a total grid draw of 1.3 kWh, as the sky was cloudy. Several dishwashers and washing machines ran throughout the day and evening without any grid consumption.
Today the weather is poor again, with cloud cover between 7/8 and 8/8. How could it be otherwise? I haven’t experienced two consecutive days of good weather here in Velbert, NRW, for ages. The system is now humming along at 600 watts, which largely covers the house’s base load (ventilation, refrigerators, freezer chest, coffee machine).
It’s a lot of fun.
Yesterday the weather was fairly good. The photovoltaic system generated 27 kWh. The solar thermal system produced 9 kWh. So the house generated roughly 36 kWh of mostly environmentally friendly energy yesterday.
From 8:30 a.m. until about 7:00 p.m., whenever I checked the display, the output was consistently above 2,500 watts. I missed the peak at solar noon around 1:33 p.m. because the first clouds rolled in. The maximum power I observed was 4,500 watts, but as I said, I couldn’t watch the system constantly. The individual strings delivered solid performance, but I haven’t yet determined the theoretical maximum combined output.
Due to a celebration, we used a power-hungry electric grill for weaving for two hours yesterday afternoon. This was the only time during the day when there was a total grid draw of 1.3 kWh, as the sky was cloudy. Several dishwashers and washing machines ran throughout the day and evening without any grid consumption.
Today the weather is poor again, with cloud cover between 7/8 and 8/8. How could it be otherwise? I haven’t experienced two consecutive days of good weather here in Velbert, NRW, for ages. The system is now humming along at 600 watts, which largely covers the house’s base load (ventilation, refrigerators, freezer chest, coffee machine).
It’s a lot of fun.
T
toxicmolotof10 Apr 2016 10:10T21150 schrieb:
Our system has an installed capacity of 6.675 kWp
2.94 kWp east-facing roof
3.74 kWp west-facing roofAfter seeing your electricity production yesterday, I became interested in your system’s output.
Yesterday, our 5.4 kWp system facing southwest at a 45° angle with a 10° mounting elevation also produced 27.4 kWh. The difference is quite remarkable. But you probably have a clear advantage in winter.
Yes, the east-west orientation (ours is precisely at 38 degrees roof/panel tilt) clearly results in lower yield compared to south or southwest.
Depending on the season, the yield is definitely about 10% or more lower. Yesterday, I also compared with a friend from AB who has a south-facing system with 6.6 kWp. Naturally, he had a higher yield than us (I believe his was around 34 kWh).
Even at solar noon, the incidence angles don’t match well for us, so the system can never deliver its maximum installed power. I would be happy if it summed up to 5,000 watts peak.
However, the system was not designed or built for maximum yield or feed-in. With a tariff of 12 cents per kWh, feeding in has become uninteresting anyway.
It was planned for a as even as possible yield for self-consumption from early to late. My initial assessment is that this works exactly as intended. The decision to install more panels on the west side (14 west, 11 east) was clearly the right one.
Once the system delivers around 2.5 kW, it is also possible to use larger appliances like the washing machine or dishwasher efficiently and save money. The base loads in the house run easily even in bad weather like now, basically for free. And here small loads add up, which over the course of a month becomes a substantial amount.
I am very excited about next week, when the missing part is supposed to arrive and be installed. Then the battery and monitoring system can be activated, and only then will I have more parameters to evaluate.
Best regards
Thorsten
Depending on the season, the yield is definitely about 10% or more lower. Yesterday, I also compared with a friend from AB who has a south-facing system with 6.6 kWp. Naturally, he had a higher yield than us (I believe his was around 34 kWh).
Even at solar noon, the incidence angles don’t match well for us, so the system can never deliver its maximum installed power. I would be happy if it summed up to 5,000 watts peak.
However, the system was not designed or built for maximum yield or feed-in. With a tariff of 12 cents per kWh, feeding in has become uninteresting anyway.
It was planned for a as even as possible yield for self-consumption from early to late. My initial assessment is that this works exactly as intended. The decision to install more panels on the west side (14 west, 11 east) was clearly the right one.
Once the system delivers around 2.5 kW, it is also possible to use larger appliances like the washing machine or dishwasher efficiently and save money. The base loads in the house run easily even in bad weather like now, basically for free. And here small loads add up, which over the course of a month becomes a substantial amount.
I am very excited about next week, when the missing part is supposed to arrive and be installed. Then the battery and monitoring system can be activated, and only then will I have more parameters to evaluate.
Best regards
Thorsten
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