ᐅ Photovoltaic Consultation: 45° Hipped Roof Facing North/South
Created on: 17 Apr 2025 15:06
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CC35BS38Hello everyone,
I am new to photovoltaics and have a few general questions: The building is oriented north/south and has a hip roof with a 45° pitch. I used PVGIS and got about 540 kWh/kW peak for the north side and 1180 kWh/kW peak for the south side.
Is it common to fully cover the north side under these conditions? Does it provide any base load during winter? I suppose this also depends on the additional costs of installing panels on the north side. I am currently looking for companies and will share the prices here.
With current prices, a battery seems to make sense. Is there a magic price threshold in €/kWh and guidance on how large to size the battery?
Thank you for your help.
I am new to photovoltaics and have a few general questions: The building is oriented north/south and has a hip roof with a 45° pitch. I used PVGIS and got about 540 kWh/kW peak for the north side and 1180 kWh/kW peak for the south side.
Is it common to fully cover the north side under these conditions? Does it provide any base load during winter? I suppose this also depends on the additional costs of installing panels on the north side. I am currently looking for companies and will share the prices here.
With current prices, a battery seems to make sense. Is there a magic price threshold in €/kWh and guidance on how large to size the battery?
Thank you for your help.
Hello,
What is the roof pitch in degrees? In summer, the north side can also generate energy, but during the darker months, when the sun is lower in the sky, it probably produces little to nothing. Unfortunately, we also have a hip roof with all four sides fully covered, because adding panels on the north side was not cost-effective.
What is the roof pitch in degrees? In summer, the north side can also generate energy, but during the darker months, when the sun is lower in the sky, it probably produces little to nothing. Unfortunately, we also have a hip roof with all four sides fully covered, because adding panels on the north side was not cost-effective.
I’m not sure what the exact term is, maybe a half-hipped roof? In any case, our east and west roofs start higher up and therefore practically have no usable area, possibly enough for 1-2 modules. But that’s better than nothing, thanks for the suggestion 🙂
@Jasmin The roof pitch is unfortunately quite steep at 45° (45°).
@Jasmin The roof pitch is unfortunately quite steep at 45° (45°).
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wiltshire18 Apr 2025 11:05Economically, it will take some time for the two modules on the north side to pay off, but there are other reasons to install photovoltaic systems.
When planning, keep in mind that each orientation should ideally be connected to its own DC combiner box (PPT) and that its operating range matches the voltage. This affects the choice of electronics and their cost calculation.
The fact that the north side may not be able to feed into the battery because a separate inverter is required is not a major issue—the yield will hardly exceed the house’s base load.
When planning, keep in mind that each orientation should ideally be connected to its own DC combiner box (PPT) and that its operating range matches the voltage. This affects the choice of electronics and their cost calculation.
The fact that the north side may not be able to feed into the battery because a separate inverter is required is not a major issue—the yield will hardly exceed the house’s base load.
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hanghaus202318 Apr 2025 11:06Show us the roof. How large is the south-facing area? Is there any shading from neighboring buildings or large trees?
In winter, there is no yield on the north side. It only makes sense if you have extra money. It’s usually not cost-effective.
A storage system can definitely be useful. Do you also want to charge an electric car at home? Do you have a heat pump?
In winter, there is no yield on the north side. It only makes sense if you have extra money. It’s usually not cost-effective.
A storage system can definitely be useful. Do you also want to charge an electric car at home? Do you have a heat pump?
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