2.A.3 - Glass Production

Short description

Category Code Method AD EF
2.A.3 T2 AS CS
Key Category SO₂ NOₓ NH₃ NMVOC CO BC Pb Hg Cd Diox PAH HCB TSP PM₁₀ PM₂ ₅
2.A.3 L/- -/- -/- -/- - - -/- - -/- - - - -/- -/- -/-

Click to view Legend

Click to hide Legend

T = key source by Trend L = key source by Level

D Default
RA Reference Approach
T1 Tier 1 / Simple Methodology *
T2 Tier 2*
T3 Tier 3 / Detailed Methodology *
CS Country Specific
M Model
* as described in the EMEP/CORINAIR Emission Inventory Guidebook - 2007, in the group specific chapters.
AD - Data Source for Activity Data
NS National Statistics
RS Regional Statistics
IS International Statistics
PS Plant Specific data
AS Associations, business organisations
Q specific questionnaires, surveys
EF - Emission Factors
D Default (EMEP Guidebook)
C Confidential
CS Country Specific
PS Plant Specific data

Germany's glass industry produces a wide range of different glass types that differ in their chemical composition. Germany's glass sector comprises the following sub-sectors: container glass, flat glass, domestic glass, special glass and mineral fibres (glass and stone wool). The largest production quantities are found in the sectors of container glass and flat glass. Further processing and treatment of glass and glass objects are not considered.


The emissions are calculated via a higher Tier method resembling a Tier 2 method, as the activity rates are tied to specific emission factors for different glass types.

Activity data

The production figures are taken from the regularly appearing annual reports of the Federal Association of the German Glass Industry (Bundesverband Glasindustrie; BV Glas). “Production” refers to the amount of glass produced, which is considered to be equivalent to the amount of glass melted down.

Emission factors

The procedure used to determine emission factors for the various glass types involved and the pertinent emissions is described in detail in reports of research projects (2008: Report-No. 0012641). The emission factors were calculated for the various industry sectors. The factors vary annually in keeping with industry monitoring, not only as steady trends, but as time ranges. Ranges below are given as averages over all glass types for main pollutants, but as averages over time for heavy metals:

Table 1: Overview of applied emission factors

Pollutant Products EF Unit Current trend
NOₓ all glass types 1.0-3.4 kg/t constant
SO₂ all glass types 0.39-1.9 kg/t constant
NMVOC all glass types 0.96 kg/t constant
NH₃ two glass types 0.03/0.7 kg/t constant
TSP all glass types 0.02-0.04 kg/t constant
PM₁₀ all glass types 0.01-0.03 kg/t constant
PM₂.₅ all glass types 0.01-0.02 kg/t constant
As container glass 0.079 g/t constant
Pb container glass 0.41 g/t constant
Cd container glass 0.04 g/t constant
Cr container glass 0.04 g/t constant
Cu container glass 0.10 g/t constant
Ni container glass 0.014 g/t constant
Se container glass 1.4 g/t constant

Trends in emissions correspond to trends of emission factors and of production development. The resulting trends are not constant, as a result of different EF for various glass types. So emissions of SO₂ couldn't decrease due to increased production Level of a relevant product.

Emission trends in NFR 2.A.3


Recalculations were necessary due to updated activity data for the last reported year.

For pollutant-specific information on recalculated emission estimates for Base Year and 2018, please see the pollutant specific recalculation tables following chapter 8.1 - Recalculations.

Planned improvements

For purposes of updating the EF project has started in 2019, results from 2020 2) are planned to be use for Submission 2022.

1) UFoPlan FKZ 206 42 300/02: Teilvorhaben 02: „Providing up-to-date emission data for the glass and mineral fiber industry“ downloading via search “UBA-FB 001264” in (https://doku.uba.de ⇒ OPAC ⇒ use parameter ‘Signatur’
2) ReFoPlan FKZ – 3719 52 1010: „Überarbeitung der Emissionsfaktoren für Luftschadstoffe in den Branchen Zementklinkerproduktion und Glasherstellung“