Selected Customer Projects

As certified energy auditor kleinkraft assesses energy efficiency measures of its customers for the acknoledgement according to the Austrian energy efficiency law. Energy efficiency measures result in energy savings of electricity and natural gas. Within the assessed projects of big and well-known industrial companies yearly energy savings are achieved:

• 7.154.381 kWh/year

Since 2017 kleinkraft and its customers are awarded with the energy efficiency award. Raising the energy efficiency is a key tool for energy savings and long term reduction of CO2-emissions. To highlight this, each year the energy efficiency conference is organised by "klimaaktiv".

"klimaaktiv" is the climate protection initiative of the Austrian Ministry for Climate Action, Enviroment, Energy, Mobility, Innoation and Technology (BMK) and an instrument to foster the energy transition.

Photovoltaic plants with a total capacity of 1,500 kWp were realized at our customers. The produced electricity is utilized to cover the own electricity demand. Plants withouth high energy demand are supplying the electricity to the Austrian power grid.

kleinkraft accompanied the whole process from the idea until the implementation within the following steps:

• Feasibility study and sizing
• Definition of assessment criteria
• Obtaining and comparision of offers
• Obtaining permits
• Successful public funding application

To reduce the energy demand for the heating supply, an industrial heat pump was installed. The waste heat of the cooling machine and eco-electricity are used for efficient and CO2 neutral process heat production.

• The necessary energy consumption for process heat was reduced by 70%
• Public funding from Kommunalkredit
• Further information at Kommunalnet

Energy audits for the Wiesbauer Holding AG according to the Austrian energy efficiency law for buildings, process and mobility were conducted. Focus for these energy audits was laid on the identification of optimization measures to increase renewable energy on the one hand and reduce the energy demand on the other hand. Energy saving potentials and dynamic amortisation for the identified measures were calculated, technical descriptions made, and potential public funding possibilities identified. The interaction of processes was shown and possibilities to measure the impact were identified.

The following representative sites of Wiesbauer Holding AG were selected for conducting energy audits:

• Wiesbauer österreichische Wurstspezialitäten GmbH
• Wiesbauer Gourmet GmbH
• Wiesbauer branches

Results:

• Optimization potential’s for energy efficiency and renewable energy were shown
• Concrete measures and a realization strategy were defined
• Implementation of the measures including public funding was done afterwards

With the installed waste heat recovery an integrated heat concepts was implemented with the focus on waste heat utilization in lowest temperature range. During planning a special focus was at the loads in low temperature ranges. In many cases there is low demand for low temperature waste heat resulting in low efficiency of waste heat recovery systems. In cooling and especially in freezing there are many consumers.

• Heat and electricity savings of about 900 MWh per year
• Public funding from Kommunalkredit
• Further information at klima aktiv and Helios

The flagship region energy is Austria’s biggest research partnership which boosts a sustainable energy system.

NEFI New Energy for Industry is one of three flagship regions. NEFI key technologies ‘Made in Austria’ enable the decarbonisation of industrial energy systems and help to secure Austria’s position as an industrial location. Digitalisation presents new opportunities for enhancing the flexibility of the energy system, and industrial processes and plays a core role in the NEFI innovation fields and their associated flagship projects.

kleinkraft is project partner in the two projects EDCSproof and the flagship project Industry4Redispatch which will lead to producing companies beeing enabled to take part in the upcoming market for electricity flexibilities due to the utilization of the developed EDCS-controller.

More information:

• Research program Vorzeigeregion
• New Energy for Industry
• EDCSproof
• Industry4Redispatch

Carbon dioxide (CO2) is mainly responsible for the global climate change and its catastrophic effects. But, this greenhouse gas has not only disadvantages. As provider of carbon, CO2 can be used as raw material for the production of fuels or chemicals. Thus, produced CO2 is used instead of emitted to the atmosphere. Dependent from purity, the exhaust gas can be used directly or after a cleaning step. In our process the CO2 is afterwards used to produce chemicals.

Since 2015 kleinkraft works with its partners Austrian Institute of Technology (AIT) and Technical University Vienna (TU Wien) on the realization of this concept. Since 2018 these resarch and development activities were intensivied and initial research and development projects were publically funded wherof some are already successfully finished.

2022 the demonstrator prototype was finished and the patent application is ready. 2023 workshops with interested industrial partners will take place and the next steps for realization enabled.

At the site in Oberndorf an energy audit according to the Austrian energy efficiency law for buildings was conducted. Focus for this energy audit was laid on the identification of optimization measures to increase renewable energy on the one hand and reduce the energy demand on the other hand. Energy saving potentials and dynamic amortisation for the measures were calculated, technical descriptions made and potential public funding possibilities identified. The interaction of processes was shown and possibilities to measure the impact were identified.

• Alternative and efficient heating system such as industrial heat pump and central heat and power plant
• Electricity production with a photovoltaic plant
• Efficient lightning
• Lowering room temperature

The existing engines were retrofitted with synchronous engines and frequency converters. In comparison to fixed speed control the variable control needs less electricity. Via a speed controlled drive system the utilization rate in variable load ranges is maximized and thus energy saved.

• 270 MWh electricity savings per year
• Public funding form Kommunalkredit
• Further information at klima aktiv

Enhancement of the energy transformer operation via adaptation of steam providers to operation and production times. Until now the steam boiler was running constantly independent from operation and production times.

• Natural gas savings of about 83 MWh
• Energy efficiency measure sold to energy supplier
• Further information at klima aktiv

Professional waste and wastewater treatment as well as local energy supply is a huge challenge in Tanzania. To solve this problem the technical requirements for the production of biogas and its economic feasibility was evaluated. Companies from the sisal processing, fattening and slaughtering as well as a food processing company was evaluated.

The focus was on the material and energy flows as well as waste quality and possible energy production systems and their economic feasibility. One of the reports was published by UNIDO.

Replacement of the existing CHPP as supplier for process heat and for self-sustained energy supply. Optimization of the heat utilization of the CHPP

• Public funding from ÖMAG

Technical and economic feasibility study for international Waste-to-Energy projects. The results of the study were summed up in the following conference article

Analysis of Family-Farm-Based (FFB) and Pig-Fattening-Based (PFB) biogas production in Brazil and optimisation potentials

• Ramiran in Versailles