The aim of the project is to determine Brandenburg's emissions from small combustion plants that do not require a permit and to map them in a state-wide data set. The focus is on emissions of sulphur dioxide, nitrogen oxides (NO2, NOX), particulate matter (PM2.5, PM10), carbon dioxide and carbon monoxide.

For the federal state of Brandenburg, there is currently no comprehensive emission data available for small combustion plants that do not require a permit according to the 1st BImSchV. For the reference years 1995 and 2000, municipal and county emission data are available based on calculations with statistical building data [1,2]. Most recently, an emissions report was carried out on the basis of exemplary chimney sweep data to estimate the municipal area emission structure for the reference year 2013 [3]. Since 10 years have passed since the corresponding survey, it is necessary to update and expand the database on the emission situation of small combustion plants in Brandenburg. Also against the background of the sharp increase in the cost of gas, differentiated information on emissions depending on the fuel is indispensable in order to be able to understand possible developments. At the same time, a specific data basis for Brandenburg is to be developed as input for dispersion calculations/modelling applications for reporting on immission pollution by air pollutants according to Directive 2008/50/EC. Finally, the creation of this database also enables the comparison between immission modelling and the measured values from the state-wide air quality monitoring network in implementation of § 44 BImSchG. In addition to the emissions of the classic air pollutants of the 39th BImSchV, the emissions of carbon dioxide from small combustion plants are of particular interest as a data source for model calculations and balances on greenhouse gases. Finally, for the preparation of air pollution control plans in accordance with § 47 BImSchG, a reliable emission database for the small combustion plants is also required.

The aim of the project is to determine Brandenburg's emissions from small combustion plants that do not require a permit and to map them in a state-wide data set. The focus is on emissions of sulphur dioxide, nitrogen oxides (NO2, NOX), particulate matter (PM2.5, PM10), carbon dioxide and carbon monoxide. The calculations are based on the stock of small combustion plants for the reference year 2022. Chimney sweep data is a reliable source for determining this nationwide emissions data. These data were aggregated by the Brandenburg State Guild Association of the Chimney Sweeping Trades on the basis of all 251 sweeping districts in the state of Brandenburg and are provided by the AG for the evaluations within the framework of this project. This is anonymised location-based information with a postcode, which therefore does not allow the data to be displayed in a precise address. Since the postcode alone only permits a rough spatial allocation of the existing installations, final energy consumption and emissions, a municipal key must be chosen for the representation of the spatial allocation. The Client examines the extent to which valid municipal keys can also be supplied with the chimney sweep data.

The data set contains the data sets of approx. 1.1 million small combustion plants in Excel spreadsheets. The Excel tables are differentiated by fuel (heating oil, gas, solid fuels), power class (0 ÿ 4 kW, > 4 ÿ 11 kW, > 11 ÿ 25 kW, > 25 ÿ 50 kW, > 50 ÿ 100 kW and > 100 kW) and year of construction (ÿ 1994, > 1994 to ÿ 2010, > 2010 to 2022). The client can provide the chimney sweep data of the State Guild Association (LIV), which is also available from the Federal Association of Chimney Sweeps - Central Guild Association (ZIV). A list of the possible data of the fireplaces with explanations that can in principle be made available to the Contractor can be found in the appendix. The required scope of data is to be clarified in the initial consultation between the Contractor and the Client. In addition, a summary report of the plant statistics (including e.g. defects, results of measurements) of the ZIV/LIV for Brandenburg with the reference year 2022 can be provided.

The first plausibility checks of the chimney sweep data were carried out by the client. The postcodes in the database were checked for validity and possible spelling errors. In the period from 2008 to 2012, some postcodes in Brandenburg were deleted. For this reason, there was originally outdated information on the postcodes in the database. In these cases, the affected fireplaces were assigned to the new postcodes. The working group examined the chimney sweep data for abnormalities in the age structure and in the frequency of the fireplace types. In the event of unrealistic values, there were consultations between the AG and the LIV Brandenburg. The number of installations in the postcode areas was examined with regard to conspicuous values, whereby the number of installations was compared with the results of a survey from the neighbouring state of Saxony [4]. In addition, the number of installations was compared with the population densities in the postcode areas.

The type and scope of the data can be found in the appendix to this line description. With the formulation of new knowledge, this project follows on from the 2014-2015 emissions report on the municipality-area-specific emission structure [3] for the federal state of Brandenburg. The report is also provided by the Client.