Thermal solar collectors

Thermal solar collectors for heating domestic water are promoted:

250.- CHF/m2 gross collector area
max. 3.6 m2 per person
Heating support: If thermal solar collectors are also demonstrably used to a significant extent for heating support, this share can be considered subsidiary within the framework of the promotion of house technology systems

Funding application/ Construction completion certificate

The funding application and the power of attorney must generally be submitted in full and in paper form, including all attachments. Submissions via email are not sufficient. The content of applications will only be processed once the application documents have been received in full.

Fund Application Sonnenkollektoren (PDF), 01.01.2023 or Online Application

Construction completion certificate Sonnenkollektoren (PDF) 15.03.2021

Further documents/tools

Verfahrensvollmacht Förderantrag (Dokumentenvorlage)

Official Survey, National Map, Aerial Photographs

Municipal funding

Merkblatt Rohrbegleitheizung/Heizband

Conditions/requirements

Only new, state-of-the-art plant and plant components and equipment are to be used.
The hot water preparation has to be done primarily with the subsidized home automation system, thermal solar collectors or a heat pump boiler. Pure electric boilers are not permitted in subsidized systems.
Electrically operated pipe trace heating and hot water circulation systems are to be connected with a timer, ideally via an all-pole disconnection point (socket). This is because pipe trace heating systems are large consumers of electricity and should be operated in a targeted manner. If there is a disconnection point (socket), a consumption measurement can be made and quite simply unplugged in the event of unnecessary operation / service.
For hot water circulation circulating pumps energy efficiency class A (EEI ≤ 0.23) are to be installed. When installing a circulation pump that does not meet the energy efficiency class A (EEI ≤ 0.23), the subsidy is reduced by CHF 300.- per pump.
Heat pump boilers with a COP of at least 3.2 according to EN 16147 at test condition A20/W10-55 are to be installed.
The heating and the hot water systems shall be provided with continuous thermal insulation, including all distribution lines. The minimum insulation thicknesses are to be taken from the following table:

Nominal pipe size DN	Zoll	λ > 0.03 W/mK	λ ≤ 0.03 W/mK
		up to ≤ 0.05 W/mK
10-15	3⁄8" - 1⁄2"	40 mm	30 mm
20-32	3⁄4" - 1 1⁄4"	50 mm	40 mm
40-50	1 1⁄2" - 2"	60 mm	50 mm
65-80	2 1⁄2" - 3"	80 mm	60 mm
100-150	4" - 6"	100 mm	80 mm
175-200	7" - 8"	120 mm	80 mm

Not subsidized are building services systems, if they serve as an auxiliary heating to an inherently sufficient (monovalent) heating. Decisive in the promotion is the type of home automation system and the size of the building object.

Additional terms/requirements

Forfeiture of the claim The claim to the payment of subsidies expires if the measures are started before a legally binding assurance of the subsidies is available.

Project author The subsidies will only be paid if a competent planning and execution of the measures is guaranteed.

Refunding Funding contributions are only paid once for each measure; renewed funding of the same measure is only possible after 20 years.

Termination The assurance of the subsidy is limited in time according to Art. 25 EEG. The measure must be started within one year from the decision on the granting of subsidies and completed within two years.

Swinging other regulations The measure is not subsidized if it is mandatory due to other legal regulations according to Art 4. para. 2a) EEG (e.g. superstructure plan, air conditioning, swimming pool heating, conversion, etc.).

Thermal solar collectors