Here are all the sources used on this page, as well as some explanations of figures.
(1)
Explanation of the calculation of savings using the household appliance FGR.
With the survey, we obtained information that the respondents dispose of their waste at least 4-5 times a week with the current solutions offered on the market. By using the FGR household appliance, this amount would be reduced to 2-3 per week, as certain garbage still needs to be put in the garbage. Which means that we have reduced the collection of garbage from the apartment by 2 times per week. A month has an average of 4.28 weeks, which means that we have reduced the waste ratio by (4.28*2) 8.5. The survey also shows that it takes about 4 minutes to remove the garbage from the apartment. Which brings us to (8.5x12x4) 408 minutes or 6 hours 48 minutes, which is the time that would be saved per year by using the FGR household appliance and if we multiply our hourly rate by the time saved per year, we get the annual savings
Explaining the savings on bio-waste collection
www.bmel.de/EN/topics/food-and-nutrition/food-waste/national-strategy-for-food-waste-reduction.html
https://ec.europa.eu/eurostat/databrowser/view/cei_pc035/default/table?lang=en
The costs of municipal companies for processing waste food vary between 0.27 EUR/kg and 0.24 EUR/kg, which is also confirmed by the source. By using the FGR, we reduce the volume and weight by 80% of the original amount, which leads us to save 0.2 EUR for each kilogram of waste food that is passed through the FGR. On average, a person in the European Union throws away 67 kg. Which brings us to the fact that a family of four saves (0.2*67*4) 54 EUR per year.
Explaining the saving on single-use bags
As we calculated above, we would save 103 garbage removals from the apartment per year. Which means that we would also save so many bags. The price of biodegradable bags is approx. 0.45 EUR/pc. Which leads to an annual saving of (0.45*103) 46 EUR.