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"Kempten city bus energy concept" for Haslach Bus GmbH
Objective:
Development of a concept for the use of regeneratively powered buses in local public transport in Kempten. The guiding principle was to achieve a degree of self-sufficiency of 90% in order to become largely independent of energy crises and supply bottlenecks.
Applicant & background:
The applicant company, Haslach Bus GmbH, operates the city transport in Kempten with a total of 30 city buses in a bidding consortium with the company Berchthold's Autoreisen. In the interests of sustainability, the entire bus fleet is to be converted to CO2-neutral drive technology.
Service provider / funding:
- The study was carried out by Prof. Martin Steyer Engineering from Buchenberg Ahegg.
- Funding amount: €46,700 (funding rate: 50%)
- Duration: 18.07.2022 - 30.06.2023
Implementation & result:
The study began by recording the total energy consumption of both companies, including a topographical analysis of vehicle circulation. The next step involved a simulation of electricity generation (with photovoltaic systems) based on location-specific weather data and a calculation of the necessary energy storage. Based on these analyses, the requirements for charging stations and battery storage could be determined and suitable vehicle models selected.
Today, 16 electric buses are already in regular service in the city of Kempten and 11 more electric buses are to be purchased by the end of 2024, thus achievingCO2-neutral regular service in the city of Kempten.
"Energy concept Sebald Zement GmbH"
Objective:
To develop potential energy savings in the lime, stone and cement plant of Sebald Zement GmbH. The main energy consumers are to be recorded and measured and, based on this, possible ways of increasing efficiency are to be considered. In addition, the plant's energy supply is to be examined and possible alternatives to the current supply (heating oil, electricity grid) investigated. The economic viability of the proposed measures must always be examined.
Applicant & background:
The applicant company operates a lime, stone and cement plant based in Pommelsbrunn with around 75 employees. Due to the very energy-intensive manufacturing process, the plant's electrical energy requirement is around 11 million kWh of electricity and the thermal energy requirement is around 10 million kWh per year.
Service provider / funding:
- The study was carried out by Institut für Energietechnik IfE GmbH from Amberg
- Funding amount: €28,900 (funding rate: 50%)
- Duration: 06.04.2020 - 30.01.2021
Implementation & result:
The investigation began by recording the total energy consumption and the energy infrastructure in its current state. Based on this, various energy efficiency improvement potentials were considered, in particular in the drying and granulation process in the fluidized bed dryer. In addition, the entire energy supply was analyzed andCO2 emissions were recorded.
As a result, various measures were presented that could be recommended from an economic and energy-efficient point of view. These included replacing the fluidized-bed dryers with new drum dryers in the pelletizing plant and the use of photovoltaic systems on the site. In addition, it was recommended that the plant's thermal supply be switched from the current heating oil to renewable alternatives such as wood dust. A connection to the natural gas network was also considered, but not recommended due to the high costs involved.
The conversion work for the modernization of the entire pelletizing plant is already underway (see pictures), resulting inCO2 savings of around 500 t/a and heating oil savings of approx. 2,300 MWh/a. In addition, the new systems can save binder in the pelletizing process, which leads to a calculated saving of approx. 2,300 t/aCO2. The investment costs for this entire modernization amount to approximately € 5.5 million.
Another recommended measure, the conversion of the firing method to wood dust, for example, is also to be implemented in the long term
Your contact persons
Our team will be happy to answer any questions you may have about the Operational Energy Concepts funding program:
Bayern Innovativ GmbH,
Contact the Bavarian Funding and Start-up Guide team
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