Hello,
I am planning a new build with a pellet central heating system.
Now I am considering whether to also integrate solar thermal energy. Here are my thoughts:
- Including solar thermal energy in the initial new build planning. The BAFA only offers funding for this under the so-called innovation funding scheme. This requires at least KfW 55 standard and a 50% solar coverage rate. Then I would receive 150 euros per square meter.
Unfortunately, I do not know how many square meters of collectors I would need to reach 50% coverage with about 210m2 (2260 sq ft) KfW 55 plus basement. Does anyone perhaps have software and could roughly calculate this for me? I had estimated around 20m2 (215 sq ft). The roof is exactly south-facing, and the roof area is large (house footprint about 12x12m (39x39 ft), gable roof with 40-degree pitch).
- Installing solar thermal energy later.
If I have read the conditions correctly, a building is considered existing stock after 2 years.
Suppose I plan everything now, already install the pipes and possibly the mounts, but only buy the collectors after 2 years.
Then my building would be classified as existing stock, and I would receive 200 euros per square meter. Additionally, due to the KfW 55 standard and 50% solar coverage, I would receive funding multiplied by 0.5.
Assuming 20m2 (215 sq ft) collector area, that would be 3000 euros for installing everything at the same time versus 6000 euros if installed after 2 years.
Can someone help me confirm whether this approach would work?
I am planning a new build with a pellet central heating system.
Now I am considering whether to also integrate solar thermal energy. Here are my thoughts:
- Including solar thermal energy in the initial new build planning. The BAFA only offers funding for this under the so-called innovation funding scheme. This requires at least KfW 55 standard and a 50% solar coverage rate. Then I would receive 150 euros per square meter.
Unfortunately, I do not know how many square meters of collectors I would need to reach 50% coverage with about 210m2 (2260 sq ft) KfW 55 plus basement. Does anyone perhaps have software and could roughly calculate this for me? I had estimated around 20m2 (215 sq ft). The roof is exactly south-facing, and the roof area is large (house footprint about 12x12m (39x39 ft), gable roof with 40-degree pitch).
- Installing solar thermal energy later.
If I have read the conditions correctly, a building is considered existing stock after 2 years.
Suppose I plan everything now, already install the pipes and possibly the mounts, but only buy the collectors after 2 years.
Then my building would be classified as existing stock, and I would receive 200 euros per square meter. Additionally, due to the KfW 55 standard and 50% solar coverage, I would receive funding multiplied by 0.5.
Assuming 20m2 (215 sq ft) collector area, that would be 3000 euros for installing everything at the same time versus 6000 euros if installed after 2 years.
Can someone help me confirm whether this approach would work?
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