Direct emissions
2,117
tCO2e
D
Diehl
Explore carbon emissions data for Diehl. Mycelium helps you review reported emissions, disclosure status, Scope 1, Scope 2 and Scope 3 data, climate targets and sustainability information in one company profile.
This profile brings together available carbon emissions data for Diehl, including reported figures, modelled estimates, disclosure documents and sustainability indicators, so you can review its emissions and compare its performance against similar companies. Read how we source and check this data.
Emissions
Carbon emissions
Total yearly emissions across all scopes
216,035 tCO2e (Location Based)
Scope 1
tCO2e
2,117
Scope 2 (Location Based)
tCO2e
5,143
Scope 3 total
tCO2e
208,775
Scope 3 reported
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
- 11
- 12
- 13
- 14
- 15
Provenance
Emissions
Factors
53,866
kgCO2e / £M
Supplier specific emission factors (kgCO2e / £M)
Modelled
Reported
Scope 1 + 2
Direct + purchased energy
1,810
1,810
Upstream
+ upstream Scope 3
36,180
32,695
Total
+ all Scope 3
53,866
36,443
Which figure should I use?
Use Modelled. It is the most complete view: any categories the company hasn't disclosed are filled with industry-typical estimates, so a transparent company isn't unfairly penalised against one that simply hasn't reported.
Reported counts only emissions the company has filed itself. A blank or low Reported cell doesn't mean those emissions don't exist, just that the company hasn't disclosed them.
When Reported sits close to Modelled, that is a positive signal. The company has disclosed most of its salient emissions and there's little gap for the model to fill. Even then, Modelled is the right figure to use for a like-for-like comparison across companies.
Sustainability
Snapshot
Based on reported data, retrieved with AI
- Diehl reported 216,035 tCO₂e in 2024.
- Scope 3 accounted for 97% of emissions.
- Reported across 10 of 15 GHG Protocol Scope 3 categories.
- Scope 2 reported under the location based methodology.
According to available emissions disclosures, Diehl reported total yearly emissions of 216,035 tCO₂e in 2024. Scope 3 emissions accounted for 97% of reported output, indicating supply chain activity, purchased goods and services, business travel, and wider operational dependencies were the most significant contributors to the company's carbon footprint.
The company achieved a Mycelium Score of 6.1, placing it strongly within its sector for sustainability performance, and received a transparency score of 94.2, an exceptional result, reflecting open disclosure across nearly every key emissions metric.
Total Emissions across all scopes
216,035 tCO2e (Location Based)
Scope 1 emissions
Direct emissions from sources the company owns or controls, such as fuel use, facilities and vehicles.
Scope 2 emissions
Indirect emissions from purchased energy, including electricity, heating and cooling.
Location based
5,143
tCO2eMarket based
–
tCO2eScope 3 emissions
Wider value chain emissions across the 15 GHG Protocol categories, from purchased goods and business travel to investments, where reported.
Cat 1
Purchased goods & services
101,815
tCO2eCat 2
Capital goods
12,349
tCO2eCat 3
Fuel & energy related activities
1,743
tCO2eCat 4
Upstream transportation & distribution
1,154
tCO2eCat 5
Waste generated in operations
654
tCO2eCat 6
Business travel
2,338
tCO2eCat 7
Employee commuting
3,816
tCO2eCat 8
Upstream leased assets
13,975
tCO2eCat 9
Downstream transportation & distribution
5,329
tCO2eCat 10
Processing of sold products
13,975
tCO2eCat 11
Use of sold products
3,256
tCO2eCat 12
End-of-life treatment of sold products
6,446
tCO2eCat 13
Downstream leased assets
13,975
tCO2eCat 14
Franchises
13,975
tCO2eCat 15
Investments
13,975
tCO2e5 values were derived via Mycelium's normalisation process rather than reported by the company. Cells marked “–” were not disclosed.
Contact Info
Browse carbon emissions data by industry
Jump straight into the sectors users explore most, or view all industries.
How scoring works
How the Mycelium Score is calculated
The Mycelium Score is out of 10. Up to 6.5 points reflect carbon intensity vs sector peers (emissions normalised against revenue). The remaining 3.5 reflect data quality: third-party verified, profile claimed by the company, and full disclosure across all reporting categories.
A higher score means lower carbon intensity than sector peers, backed by data that's third-party verified, claimed by the company, and fully disclosed. Diehl's score sits at the top of this page and in the score panel.
How the Transparency Score is calculated
The Transparency Score measures how much of a company's key emissions data is publicly disclosed, graded from A (very high) down to F (very low). Crucially, it weights each gap by how material that bucket is for the company's industry, so an undisclosed category where the bulk of emissions sit hurts far more than a minor one.
For Diehl, the single biggest gap is Upstream leased assets (Scope 3 Category 8). Mycelium estimates it accounts for around 6% of the company's total footprint, typically the largest source of emissions for a Manufacturing company, yet it hasn't been disclosed. Leaving a bucket this large unreported is what's holding the transparency score down.
Other material categories Diehl hasn't disclosed:
- Processing of sold products (Scope 3 Category 10), around 6% of the estimated footprint
- Downstream leased assets (Scope 3 Category 13), around 6% of the estimated footprint
- Franchises (Scope 3 Category 14), around 6% of the estimated footprint
In total, roughly 30% of Diehl's estimated emissions sit in categories it hasn't reported. Disclosing these would be the fastest way to raise the transparency score.
Read the full scoring methodology
Our white paper covers exactly how the Mycelium Score and Transparency Score are calculated, including the normalisation process and what earns a 10/10.
Download the white paper (PDF)
Diehl carbon emissions FAQs
What are Diehl's carbon emissions?
In its 2024 reporting year, Diehl disclosed total emissions of 216,035 tCO2e across all scopes. Scope 3 accounted for the largest share, around 97% of the total.
Does Diehl report Scope 1, Scope 2 and Scope 3 emissions?
For 2024, Diehl's available disclosure covers Scope 1 (2,117 tCO2e), Scope 2 (5,143 tCO2e), Scope 3 across 10 of the 15 GHG Protocol categories. Figures not reported by the company are shown as modelled estimates and labelled as such.
How transparent is Diehl's emissions reporting?
Diehl has a Mycelium transparency score of 94.2 out of 100. The score weights each emissions category by how material it is for the company's industry, so it reflects whether the disclosures that matter most have been made.
Is Diehl sustainable?
Mycelium measures sustainability through carbon emissions data rather than giving a yes or no verdict. Diehl has a Mycelium Score of 6.1 out of 10, which reflects its emissions intensity against sector peers together with how transparent and well-verified its reporting is. The emissions figures, disclosure documents and climate targets on this page give the fuller picture.
Is Diehl environmentally friendly?
Carbon emissions are one measurable part of environmental impact, and the part Mycelium tracks. Diehl disclosed 216,035 tCO2e for 2024, and its Mycelium Score of 6.1 out of 10 shows how that performance compares with similar companies in its sector.
Learn more about our methodology and where this data comes from.
