Keeping your requirements in focus – our site is becoming renewable

Whoever produces, knows the challenges: becoming more efficient, reducing emissions, delivering reliably. We start with ourselves and systematically convert our site in Königsbach. Specifically: photovoltaics 79.98 kWp, complete conversion to heat pumps, ~160 mm roof insulation, as well as 11 kW charging stations with provision for more. By 2027, we will reach 100% renewable energy on balance – with our own PV and a switch to green power.

PV 79.98 kWp
Yield ≈ 80,000 kWh/year
Heating 3 HP ≈ 38 kW_th each
Storage 4×1,000 l
Heating rods 4×3 kW
Roof insulation ≈ 160 mm
Charging points 2×11 kW (＋2)

Implementation at a glance

Electricity:
- The PV system (172 modules at 465 Wp, module output ~23%) provides approx. 80,000 kWh/year.
- Connection possibility for battery storage prepared.

Heating:
- 3 heat pumps (≈38 kW_th) supply the building.
- 4 × 1.000 l buffer stores heat.
- 4 × 3 kW heating elements provide backup on very cold days or during PV peaks.
- The step-by-step replacement of the oil heating system has been implemented – centrally for efficiency.

Building insulation:
- 642 m² roof area insulated.
- ~160 mm insulation thickness.
- Exact savings are difficult to quantify here, but we conservatively estimate ~10% for this area.

Mobility:
- 2 x 11 kW charging stations installed, PV-controlled.
- Provision for two more already prepared.
- This already enables the local CO₂-free operation of a vehicle fleet.

Already implemented in 2025

Roof & PV: Start February, completed end of April – completed.
Heating & distribution: Oil heating replaced – completed.
Conversion and installation of heat pumps: Mid-September – completed.

Expected effect (on balance):

PV yield ≈ 80,000 kWh/year.
Replacement of approx. 28,000 l heating oil/year (fossil fuel).
The high average COP of 3.5 enables the balanced operation of the heat pumps through the PV system.

Milestones by 2027

2024: Finalization and planning of necessary steps.
2025: Roof + PV in operation, heat pumps installed, charging stations active.
2026: Storage regulation reinstalled, PV-optimized charging stations expanded.
2027: Conversion to green electricity – together with our own PV, this achieves 100% renewable energy on balance for electricity and heat at the site.