BAFA Module 3: Funding for Waste Heat Utilisation
Context: Module 3 within the EEW funding programme
The BAFA programme for federal funding of energy and resource efficiency in industry (EEW) is divided into several modules. Module 3 is specifically aimed at the utilisation of process heat and waste heat. For data centre operators looking to supply waste heat to external off-takers or to use it for internal purposes, this module is the primary federal funding channel.
The funding is not limited to large facilities. It applies from minimum eligible costs of EUR 10,000, thereby also covering smaller measures relevant to mid-sized operators.
Eligible technologies and components
Module 3 funds investments in technical components that serve waste heat recovery and utilisation. These include heat exchangers that extract heat from the data centre's cooling circuit, as well as heat pumps that raise the temperature level for district heating use.
Also eligible are piping and fittings within the premises, as well as the measurement, control, and regulation technology required for operating the system. Planning costs are co-funded up to a share of 10% of the eligible investment costs. This is relevant because energy audits, engineering services, and project planning can incur significant costs.
Funding rates by company size
The funding rates under Module 3 are tiered in accordance with EU state aid law. Small and medium-sized enterprises (SMEs) under the EU definition receive 45% of eligible costs. Medium-sized enterprises that exceed the SME threshold but are still considered mid-sized receive 35%. Large enterprises receive 25%.
The SME definition is based on the EU recommendation: fewer than 250 employees and either less than EUR 50 million in annual turnover or a balance sheet total below EUR 43 million. Both criteria must be met cumulatively, and affiliated companies must be included in the calculation. Data centre operators that are part of a larger group almost always fall into the large enterprise category.
The application process: timeline
The most common and most costly error in EEW funding applications is premature commencement of works. The requirement to submit the application before the project begins is not a formality but a substantive legal prerequisite. Anyone who awards contracts, places orders, or commences construction before the application has been received by BAFA forfeits the funding entitlement entirely and irrevocably.
The recommended sequence is: complete the energy audit, finalise the investment concept, submit the application, await the grant decision, and only then commission the first supplier. BAFA processing time for complete applications is typically 2 to 4 months.
After completion of the measure, a proof of use with full documentation must be submitted. Disbursement takes place after review of the proof of use.
Required documents
A complete Module 3 application requires the following documents: an energy audit compliant with DIN EN 16247 that describes the baseline situation and qualifies the waste heat source. At least two independent cost estimates for the planned investments. A calculation of the CO2 savings achieved by the measure.
In addition, an operator declaration is required in which the applicant commits to operating the funded system for at least five years. This binding period must be considered in the event of sale, decommissioning, or material technical modification.
For projects involving supply to third parties (district heating network, neighbouring buildings), a letter of intent or preliminary agreement with the off-taker is helpful, even if not formally mandatory.
Combinability with other programmes
EEW Module 3 can be combined with other funding programmes, provided the total funding rate does not exceed the state aid ceiling. Combinations relevant in practice include the KfW programme 293 (federal funding for industry and commerce), which also supports energy efficiency measures, as well as programmes of individual federal states.
Combining BAFA Module 3 with EEW Module 1 (cross-cutting technologies) is possible in certain constellations where the funded components are clearly delineated and no double funding arises.
When planning a financing package, note that each funding programme has its own application deadlines, proof-of-use requirements, and processing times. A project that depends on three funding sources requires correspondingly more lead time in its planning.
Link to EnEfG compliance
For operators subject to the EnEfG, the reporting obligation under Section 17 creates a direct bridge to BAFA funding. The compliance report that operators must prepare in any case contains the essential foundations for a Module 3 application: quantification of the waste heat potential, the temperature profile, and an initial economic assessment.
Operators who treat their Section 17 documentation as a pure compliance exercise are forfeiting the value of this analysis as a funding basis. Those who structure the report so that it serves directly as a foundation for an EEW application save considerable duplication of effort and shorten the path to a funding decision.
Questions about implementation? Ardor helps operators with automated data capture, calculation, and BAFA-compliant preparation of their waste heat data. contact@ardor.institute