Installation of oil heating systems still permitted after 2025 - subsidies for supplementation with regenerative heat production
An oil condensing heating system combined, for example, with a heat pump or solar heating can provide for a future-proof, sustainable and effective system. The heating load is further reduced through additional efficiency measures, such as low-temperature underfloor heating. Subsidies for regenerative energy generators also include so-called periphery measures, such as retro-fitting of panel heating systems in existing buildings. In addition, energy consumption and CO2 emissions can be effectively reduced through insulation of the building shell, new windows, or a roof refurbishment.
Openness to technological ideas is key
In structurally weak and rural areas, there is often no access to local heating networks or gas supply. The installation of an oil condensing heating system as a hybrid solution is therefore often the only cost-efficient option for supplementing regenerative heat generation in an expedient manner. Home builders who opt for this type of system are set up for decades to come. Heating oil with biogenic content contributes to a reduction of CO2 emissions even now. In the foreseeable future, climate-neutral synthetic fuels – so called e-fuels – will also become available.
Prospects for oil heating systems
In the case of supply shortages of renewable energies, oil condensing technology is a suitable solution for reaching CO2 reduction targets in buildings with a heating oil storage system for long-term energy storage at high energy density. As part of the climate protection programme, the German Federal Cabinet has approved the draft building energy act. This law covers the future use and modernisation of heating systems. The draft is currently going through the legislative process: it must be approved by the Bundestag. Individual points may still be changed over the course of the legislative process.
Heating oil tank systems as energy storage in renovation
The Buchenau-based company Roth Werke offers the DWT plus 3 and KWT tank ranges for replacing heating oil tank systems. The containers ensure the safe and compact storage of heating oil in combination with modern heating systems. The premium Roth DWT plus 3 heating oil tank is available in sizes of 750, 1,000 and 1,500 litres. The 750-litre size is particularly suited for renovation projects. Compared with tanks that have an average height of around 1.70 metres, it reduces the tank height by around a quarter.
The double-walled Roth KWT is available in sizes of 750, 1,000 and 1,500 litres. It is made entirely of plastic, with a polyethylene inner tank and a polyethylene catch tray. The edge of the shell connects directly to the tank on the inside to form a single functional tank unit. Both container ranges feature the well-established Roth Füllstar plastic filling system and are suitable for storage of standard heating oils and heating oils with biogenic components.
| Before and after – Roth DWT plus 3 heating oil tanks are a good option when replacing an old oil heating system.
|Facts & figures
From 2026: Oil heating systems continue to be permitted, if combined with renewable energy generators.
Subsidies: State subsidies are available for renewable energy generators, more information is available here www.bafa.de.
Heating oil: Heating oils with biogenic content are already available, and climate-neutral synthetic fuels are going to become available in the foreseeable future.
Sustainability: Oil condensing technology combined with renewable energies and additional measures for improving building efficiency, contribute to a reduction of CO2 emissions.
Supply security: In the case of supply shortages of renewable energies, oil condensing technology is a suitable solution for buildings with a heating oil storage system for long-term energy storage at high energy density.