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Mplx LP

6.6
Mycelium Score 6.6 / 10 A strong score B Transparency High Strong disclosure across key areas

Explore carbon emissions data for Mplx LP. 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 Mplx LP, including reported figures, modelled estimates, disclosure documents and sustainability indicators, so you can review its emissions and compare its performance against similar companies. It is one entry in the Mycelium emissions database. Read how we source and check this data.

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Emissions

Carbon emissions

Structured data JSON-LD, OpenCCF Spreadsheet CSV
Open Corporate Carbon Footprint Data Model (OpenCCF) Schema and docs on GitHub By the Carbon Accounting Alliance with Murmurate Digital, Mycelium and Roundarc.

Total yearly emissions across all scopes

10,440,564 tCO2e (Location Based) (Mycelium adjusted)

Reported by Mplx LP
8,700,000 tCO₂e
Estimated by Mycelium
1,740,564 tCO₂e

Mplx LP reported 83% of the adjusted total. Mycelium estimated the remaining 17% for the categories it did not disclose.

Scope 1

tCO2e

5,400,000

Scope 2 (Location Based)

tCO2e

3,300,000

Scope 3 total

tCO2e

1,740,564

Not yet checked against the source report

Scope 3 reported

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6
  7. 7
  8. 8
  9. 9
  10. 10
  11. 11
  12. 12
  13. 13
  14. 14
  15. 15

Something wrong? Contribute to this dataset

See the scope breakdown

Provenance

Review the sources and documents behind Mplx LP's emissions data. Provenance matters because it shows where the information comes from, how recent it is and how complete the disclosure appears to be.

Emissions
Factors

Modelled emission factor Total, all scopes including all Scope 3
1.117 kgCO2e / £

Supplier specific emission factors (kgCO2e / £)

Modelled
Reported
Scope 1 + 2 Direct + purchased energy
0.931
0.931
Upstream + upstream Scope 3
1.059
0.931
Total + all Scope 3
1.117
0.931

Scope 2 in these factors uses the company's location based figure.

Which figure should I use?

Comparing companies? Use Total Modelled. It is the most complete like-for-like view: any categories the company has not disclosed are filled with industry-typical estimates, so a transparent company is not unfairly penalised against one that simply has not reported.

Estimating your own supply-chain emissions from spend with this company? Use Upstream Modelled. The GHG Protocol defines purchased-goods emissions as cradle-to-gate, which means this company's own operations plus its upstream supply chain. The Total figure also includes downstream emissions, such as the lifetime use of the products this company sells, which the GHG Protocol attributes to the users of those products rather than to customers buying goods and services.

Reported counts only emissions the company has filed itself. A blank or low Reported cell does not mean those emissions do not exist, just that the company has not disclosed them. When Reported sits close to Modelled, that is a positive signal: the company has disclosed most of its salient emissions.

Sustainability
Snapshot

Based on reported data, retrieved with AI

  • Mplx LP reported 8,700,000 tCO₂e in 2023.
  • Scope 3 accounted for 17% of emissions.
  • Reported across 1 of 15 GHG Protocol Scope 3 categories.
  • Scope 2 reported under the location based methodology.

According to available emissions disclosures, Mplx LP reported total yearly emissions of 8,700,000 tCO₂e in 2023. Scope 1 emissions accounted for 52% of the footprint, indicating direct emissions from owned facilities, fleet vehicles, and on-site fuel combustion were the leading contributors to the company's footprint.

The company achieved a Mycelium Score of 6.6, placing it strongly within its sector for sustainability performance, and received a transparency score of 83.3, meaning they share solid detail across the main emissions areas.

Scope
breakdown

Scope 1 emissions

Direct emissions from sources the company owns or controls, such as fuel use, facilities and vehicles.

REPORTED

Direct emissions

5,400,000

tCO2e

Scope 2 emissions

Indirect emissions from purchased energy, including electricity, heating and cooling.

REPORTED

Location based

3,300,000

tCO2e

Market based

–

tCO2e

Scope 3 emissions

Wider value chain emissions across the 15 GHG Protocol categories, from purchased goods and business travel to investments, where reported.

ESTIMATED

Cat 1

Purchased goods & services

706,520

tCO2e
ESTIMATED

Cat 2

Capital goods

27,981

tCO2e
ESTIMATED

Cat 3

Fuel & energy related activities

142,411

tCO2e
ESTIMATED

Cat 4

Upstream transportation & distribution

279,810

tCO2e
ESTIMATED

Cat 5

Waste generated in operations

14,826

tCO2e
ESTIMATED

Cat 6

Business travel

10,336

tCO2e
ESTIMATED

Cat 7

Employee commuting

10,649

tCO2e
ESTIMATED

Cat 8

Upstream leased assets

7,726

tCO2e
ESTIMATED

Cat 9

Downstream transportation & distribution

177,805

tCO2e
ESTIMATED

Cat 10

Processing of sold products

156,714

tCO2e
REPORTED

Cat 11

Use of sold products

0

tCO2e
ESTIMATED

Cat 12

End-of-life treatment of sold products

24,744

tCO2e
ESTIMATED

Cat 13

Downstream leased assets

17,749

tCO2e
ESTIMATED

Cat 14

Franchises

17,749

tCO2e
ESTIMATED

Cat 15

Investments

145,543

tCO2e

14 values were derived via Mycelium's normalisation process rather than reported by the company. A cell marked “ESTIMATED” is a figure the company did not disclose, modelled by Mycelium. Cells marked “–” were not disclosed and could not be modelled.

Structured data JSON-LD, OpenCCF Spreadsheet CSV
Open Corporate Carbon Footprint Data Model (OpenCCF) Schema and docs on GitHub By the Carbon Accounting Alliance with Murmurate Digital, Mycelium and Roundarc.

Verification

Independent third parties involved in checking or preparing Mplx LP's emissions data.

Independent assurance

Independently assured (limited assurance) by LRQA for 2023

Contact Info

Website

–

Address

200 East Hardin Street
Findlay
45840

Country

United States

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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), scaled by how transparent the reporting is. The band above 6.5 is earned through verified data quality on a claimed profile: declaring every reporting category yourself (up to 2.0), preparation by a carbon accountant (2.0) and independently audited figures (2.0), capped at 10.

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. Mplx LP's score sits at the top of this page and in the score panel.

How the Transparency Score is calculated

The Transparency Score is the share of a company's estimated footprint that it reported itself, graded from A (very high) down to F (very low). Where a category is missing, Mycelium models what it would hold for a company of that size and industry and counts it as undisclosed, so an unreported category where the bulk of emissions sit hurts far more than a minor one. A Scope 3 total filed without a category breakdown earns very little credit for the part left unattributed, because it does not show which categories are inside it: a company can count business travel, leave purchased goods out entirely, and the total looks the same. Companies with nothing to model are graded on how much of their industry's typical footprint the reported categories cover.

For Mplx LP, the single biggest gap is Purchased goods & services (Scope 3 Category 1). Mycelium estimates it accounts for around 7% of the company's total footprint, typically the largest source of emissions for a Power Generation company, yet it hasn't been disclosed. Leaving a bucket this large unreported is what's holding the transparency score down.

Other material categories Mplx LP hasn't disclosed:

  • Upstream transportation & distribution (Scope 3 Category 4), around 3% of the estimated footprint

In total, roughly 10% of Mplx LP's estimated emissions sit in categories it hasn't reported. Disclosing these would be the fastest way to raise the transparency score.

Cover of Mycelium's scoring methodology white paper 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)

Mplx LP carbon emissions FAQs

What are Mplx LP's carbon emissions?

In its 2023 reporting year, Mplx LP disclosed total emissions of 8,700,000 tCO2e across all scopes. Including Mycelium estimates for undisclosed categories, the adjusted total is 10,440,564 tCO2e. Scope 1 accounted for the largest share, around 52% of the total.

Does Mplx LP report Scope 1, Scope 2 and Scope 3 emissions?

For 2023, Mplx LP's available disclosure covers Scope 1 (5,400,000 tCO2e), Scope 2 (3,300,000 tCO2e), Scope 3 across 1 of the 15 GHG Protocol categories. Figures not reported by the company are shown as modelled estimates and labelled as such.

How transparent is Mplx LP's emissions reporting?

Mplx LP has a Mycelium transparency score of 83.3 out of 100. The score is the share of the company's estimated footprint that it reported itself, so an undisclosed category where most of its emissions sit weighs far more than a minor one.

Is Mplx LP sustainable?

Mycelium measures sustainability through carbon emissions data rather than giving a yes or no verdict. Mplx LP has a Mycelium Score of 6.6 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 Mplx LP environmentally friendly?

Carbon emissions are one measurable part of environmental impact, and the part Mycelium tracks. Mplx LP disclosed 8,700,000 tCO2e for 2023, and its Mycelium Score of 6.6 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.