2.B.7 - Soda Ash Production

Short description

Category Code Method AD EF
2.B.7 T1 NS/PS C

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Method(s) applied
D Default
T1 Tier 1 / Simple Methodology *
T2 Tier 2*
T3 Tier 3 / Detailed Methodology *
CS Country Specific
M Model
* as described in the EMEP/EEA Emission Inventory Guidebook - 2019, in category chapters.
(source for) Activity Data
NS National Statistics
RS Regional Statistics
IS International Statistics
PS Plant Specific
As Associations, business organisations
Q specific Questionnaires (or surveys)
M Model / Modelled
C Confidential
(source for) Emission Factors
D Default (EMEP Guidebook)
CS Country Specific
PS Plant Specific
M Model / Modelled
C Confidential

NOx NMVOC SO2 NH3 PM2.5 PM10 TSP BC CO Heavy Metals POPs

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L/- key source by Level only
-/T key source by Trend only
L/T key source by both Level and Trend
-/- no key source for this pollutant
IE emission of specific pollutant Included Elsewhere (i.e. in another category)
NE emission of specific pollutant Not Estimated (yet)
NA specific pollutant not emitted from this source or activity = Not Applicable

In Germany, soda ash is produced in three facilities, all of which use the Solvay process. The production data is thus confidential.


Activity data

The total amounts of soda ash produced in Germany are determined with the help of two data suppliers. The Federal Statistical Office has long time series for this area. Due to the presence of a nearly inexplicable trend in the data of the Federal Statistical Office for the period since 2015, the relevant producers were contacted, and in 2021 cooperation agreements were signed with both producers (for all three production sites). The German Environment Agency (UBA), which consolidates the relevant data, has decided that as of 2013 the pertinent time series is to be filled with the producers’ data (this overlaps with a comparison carried out for the period 2013 through 2021). Since Germany has only two producers, the production-quantity data from the two sources must be kept confidential.

Emission factor

Emission factors (for TSP and NH3) are confidential due to restrictions on activity data.

The steep reduction—especially for NH3—at the beginning of the 1990s was due to closures in the eastern German industrial sector. For the year 1990 in the case of TSP for eastern Germany, a summary figure is reported for the Chemical Industry as a whole. However, after 1992, emissions of NH3 occur at a lower level.

All trends in emissions correspond to trends of emission factors. No rising trends are to identify.

Emission trends in NFR 2.B.7


Recalculations were required due to small changes in one activity data for some years, but not for EF aspects.

Recalculations in NFR 2.B.7

For pollutant-specific information on recalculated emission estimates for Base Year and 2021, please see the pollutant specific recalculation tables following chapter 8.1 - Recalculations.

Planned improvements

No further improvements are planned at the moment.