55 Ecology The entire electricity requirement for the Bützberg site is covered by electricity that has a Swiss hydropower certificate of origin of. We intend to maintain this arrangement for 2023 and 2024. In the coming reporting period, we will also investigate the feasibility of installing a photovoltaic system at the Bützberg site. Endingen site At our Endingen plant, the distribution of energy consumption has also only changed slightly. Heating is responsible for the most energy consumption at 52%, followed by fuels at 35% and electricity at 13%. As expected, there was an increase in heating energy consumption, adjusted for heating degree days, due to the newly built warehouse. In the second half of 2022, indoor temperatures were reduced to a maximum of 19°C in order to save on heating energy. Consumption of fuels has also risen again slightly, but not to the pre-Covid pandemic levels in Switzerland. Compared to the 2019/20 levels, we were 6% lower in 2021/22. In the coming reporting period, we will strive to stabilise consumption at this level. As regards electrical energy, our consumption is again back at 2019 levels. We purchased green electricity from our energy supplier through to the end of 2022. Moreover, we were able to extend this supply contract once again. For 2023, we have also set ourselves the objective of enlarging our photovoltaic system. We intend to install an additional approx. 60 kWp and also use this generated energy internally. Roland Ammann Overview energy consumption Energy source Energy sources from sustainable resources Fossil energy sources 2018 2019 2020 2021 2022 Diesel Endingen Electricity Endingen/green electricity Electricity Bützberg/electricity from hydropower Waste wood Bützberg Petrol Endingen Petrol Bützberg Diesel Bützberg Natural gas Endingen Heating oil Bützberg MWh 8500 8000 7500 7000 6500 6000 5500 5000 4500 4000 3500 3000 2500 2000 1500 1000 500 0
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