Lighting

This regional climate-protection directive funds municipal climate investments at 40 %. It applies specifically to efficiency measures such as pool covers, LED lighting and pump replacement. It can be combined with ISEK provided the measures differ. Example: an outdoor-pool night cover (80 k€ investment, 17 k€/a saving) is ideal — payback with this grant is 2.8 years.

Basis: Regional climate-protection funding directive

Load-management systems switch shiftable loads in sync with PV production. In a pool the ideal moves are: modulate the heat pumps onto the PV profile, raise ventilation stages when PV surplus exists, run the main filter pumps during the day, dim lighting during daylight. Investment 30-60 k€ depending on the number of switching devices and building-management integration. Self-consumption ratio typically rises from 30 % to 55-70 % with broad integration. Precondition: all main loads are Modbus/MQTT-capable.

Basis: Practice (e3dc, ESL, Solarwatt)

The ISEK programme co-funds municipal climate-protection and refurbishment measures at 50 %, capped at 500,000 € per measure and 5 M€ per project. Precondition: the measure is anchored in the municipal climate-protection plan. Processing takes 6-12 months. Measures can be bundled (e.g. heat pump + insulation + load management in one application) but cannot be combined with federal BAFA funding on the same asset. Note: PV car-port roofing is usually funded separately at 30 %; ISEK eligibility for PV is a case-by-case decision requiring a climate-protection rationale.

Basis: ISEK (German regional urban-development grant)

This regional renewables programme funds market-introduction investments at 30 %, with faster processing than ISEK (typically 3-4 months). It applies to PV systems, load-management systems and (limited) storage. It combines with ISEK on the same property but not on the same measure. Relevant example: a 400 kWp car-port PV array could be funded at 30 % here or 50 % via ISEK — the higher ISEK rate is strategically better but not guaranteed to be eligible for PV.

Basis: Regional renewables market-introduction grant

The federal Module 2 funds heat pumps, thermal storage and heat-network connections in non-residential buildings at 40 %. Important: it is NOT combinable with the regional ISEK grant on the same measure. Municipalities must choose: ISEK 50 % (higher rate, longer processing) or the federal 40 % (faster, nationwide). ISEK is usually the better choice when the climate rationale holds; the federal grant is a fallback if ISEK is refused.

Basis: Federal efficient-energy grant, Module 2