Hello everyone,
We recently selected a building plot in a new development area during the allocation appointment in our home municipality near Munich. I won’t even start talking about the problems and frustrations this topic will continue to bring us for years to come—otherwise, I might as well do a dive off the 10-meter (33-foot) platform into an empty pool. So, let’s just leave it at that.
My main concern is the photovoltaic system that is supposed to be installed (with battery storage + heat pump) or on the (semi-detached house). I have to say that the development plan isn’t very well thought out and specifies a shed roof (mono-pitched roof) facing north-north-east for our house and the five other semi-detached houses on the side street. I have seen from various tables that a 12° (12°) roof pitch combined with a north orientation is quite poor for photovoltaic system yield. And if I am already investing a lot of money in such a system to make the heat pump pay off, it really should operate at maximum efficiency.
According to the municipality, which will discuss this in its building committee on Tuesday, it is not yet clear whether they will approve a 180° rotation of the roof orientation (then facing south-south-west). It is also uncertain whether this would be required only for the directly attached neighbor or for all six semi-detached houses in that row, due to the requirement for uniform profiles.
Two questions on this:
1. How do I find providers with a good price-performance ratio for photovoltaic systems (with or without storage? pros and cons)? I think there is hardly any other technical system about which I have less knowledge than photovoltaic systems. I know more about sewing machines and construction machinery, even though I neither sew nor dig deep holes. 😀
2. From a construction point of view, I see two possibilities:
a) Do nothing, which means I would have a photovoltaic roof system facing north. How much output can I expect from 0° flat-hung balcony panels or wall-mounted panels? It probably looks awful and what about the yield?
b) Rotate the roof by 180°, and raise it overall by about 50cm (20 inches), which would automatically exceed the maximum allowed height according to the development plan. The roof pitch would be flattened from 12° (12°) to 7° (7°) (so that rain can still provide self-cleaning) to prevent the sloping side from extending too far over the south-facing balcony below. The balcony forms the bay window for the first floor and ground floor.
I would like possible providers to calculate both scenarios, but how do I find reasonable, reliable, and capable photovoltaic system providers? Many thanks.
We recently selected a building plot in a new development area during the allocation appointment in our home municipality near Munich. I won’t even start talking about the problems and frustrations this topic will continue to bring us for years to come—otherwise, I might as well do a dive off the 10-meter (33-foot) platform into an empty pool. So, let’s just leave it at that.
My main concern is the photovoltaic system that is supposed to be installed (with battery storage + heat pump) or on the (semi-detached house). I have to say that the development plan isn’t very well thought out and specifies a shed roof (mono-pitched roof) facing north-north-east for our house and the five other semi-detached houses on the side street. I have seen from various tables that a 12° (12°) roof pitch combined with a north orientation is quite poor for photovoltaic system yield. And if I am already investing a lot of money in such a system to make the heat pump pay off, it really should operate at maximum efficiency.
According to the municipality, which will discuss this in its building committee on Tuesday, it is not yet clear whether they will approve a 180° rotation of the roof orientation (then facing south-south-west). It is also uncertain whether this would be required only for the directly attached neighbor or for all six semi-detached houses in that row, due to the requirement for uniform profiles.
Two questions on this:
1. How do I find providers with a good price-performance ratio for photovoltaic systems (with or without storage? pros and cons)? I think there is hardly any other technical system about which I have less knowledge than photovoltaic systems. I know more about sewing machines and construction machinery, even though I neither sew nor dig deep holes. 😀
2. From a construction point of view, I see two possibilities:
a) Do nothing, which means I would have a photovoltaic roof system facing north. How much output can I expect from 0° flat-hung balcony panels or wall-mounted panels? It probably looks awful and what about the yield?
b) Rotate the roof by 180°, and raise it overall by about 50cm (20 inches), which would automatically exceed the maximum allowed height according to the development plan. The roof pitch would be flattened from 12° (12°) to 7° (7°) (so that rain can still provide self-cleaning) to prevent the sloping side from extending too far over the south-facing balcony below. The balcony forms the bay window for the first floor and ground floor.
I would like possible providers to calculate both scenarios, but how do I find reasonable, reliable, and capable photovoltaic system providers? Many thanks.