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Bakery: ultrasonic humidification of dough

Energy
Craft Industry
[ Detailed version of the measure ]
Last update: 16/02/2026
  • Possibility of assistance
  • Subsidies available
  • Innovative solutions

To make this measure more effective and tailored to the specific context of your company, we recommend that you first perform an overall analysis of your energy situation.

Ultrasonic humidification in the proofing chamber

The project involves replacing hot steam generation with humidification based on ultrasonic low-temperature water mist.

Installing this technological innovation can allow the company to save up to 95% on electricity consumption during the humidification stage, as well as 5% during the cold generation stage. This measure is not easy to implement and would entail a medium-to-long term return on investment. The measure does not require a production shutdown while the technology is being installed.

Energy and environmental impact

Generating a water mist through a thermal process consumes 95% more energy than through a mechanical ultrasonic process. Further, proofing causes an exothermic reaction that requires cooling of the proofing chambers.

Ultrasonic humidification through adiabatic evaporation contributes to cooling, while the thermal process must be compensated by additional cooling.

Subsidy application

State subsidies

Please note: any application for government or non-government subsidies must comply with the “incentive effect”, subject to compliance with the subsidy conditions.
To ensure that the incentive effect of the aid is respected, no binding commitments may be made (acceptance of a quote; advance)

  • SME Packages – Sustainability
    • Financial Aid for small and medium-sized enterprises covering up to 70% of eligible costs for the implementation of a project aimed at reducing the environmental impact. The eligible project budget must be in a range from 3.000 € to 25.000 € excl. VAT.
    • For more information:

N.B. While several state subsidies cannot be granted for the same project, they can be combined with assistance from energy suppliers.

Subsidies from electricity and natural gas suppliers

Since 2015, natural gas and electricity suppliers are required to make energy savings for consumers under the obligation scheme. Since then, energy suppliers have been offering support and advice, as well as subsidy programmes for consumers to implement energy efficiency measures. The amount of the premium is proportional to the annual energy saving (in MWh). The following suppliers offer this service for companies:

N.B.: Supplier subsidies can be combined with a state subsidy for the same project.

Tax relief for investment in an ecological and energy transition project

The tax relief is calculated based on the investments and operating expenses incurred as part of an ecological and energy transition project.
The tax relief rate is set at 18% and is applied directly to the amount of tax due.
This deduction can be combined with standard state subsidies.

For the project to be eligible, it must meet at least one of the following objectives:

  • Improve the energy efficiency of a production process
  • Improve the material efficiency of a production process
  • Decarbonise a production process
  • Reduce air pollution at the production site (excluding CO2 emissions)
  • Produce or store renewable energy for self-consumption
  • Promote the extended use of products through reuse

For certain objectives, minimum thresholds must be met.
To verify your eligibility and ensure that these thresholds are satisfied, it is recommended that the impact of the measure on one of the above conditions be certified by an expert or a design office.

Further details and conditions: Guichet.lu
For questions: Ministry of Economy – Bonus

This type of project may be eligible for tax relief, subject to compliance with the criteria set out in Article 152bis L.I.R.

Implementation aid

Contact us

I would like more information on:

  • Fit 4 Sustainability
  • Government subsidies
  • Support
  • Identifying partners

I would like more information on:

  • Klimabonus subsidies or photovoltaic and electromobility subsidy programmes
  • A technical aspect of the measure
  • A specific tool
  • A technical aspect of the site (404 link, etc.)

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