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Scope 3 Category 15: investments

Category 15 explained: holdings, loans and project finance, proportional attribution and PCAF.

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Category 15 at a glance

01 What?
The proportional emissions from holdings, loans and project finance that are not already in Scope 1 or 2. For banks, insurers and investors usually by far the largest item in the greenhouse gas inventory. It also affects industrial and holding companies with holdings that are not in Scope 1 and 2.
02 Minimum scope?
The minimum boundary of the standard covers equity investments made from the company's own capital and, for relevant projects, loans and bonds with a known use of proceeds and project finance, provided they are not already in Scope 1 and 2: in each case at least the proportional Scope 1 and Scope 2 emissions. Scope 3 of the investees should be included if it is significant. Optional items include general corporate loans and managed client funds.
03 Boundary?
What sits in Scope 1 and 2 and what sits here depends on the chosen consolidation approach: under the equity share approach, subsidiaries, associates and joint ventures sit pro rata in Scope 1 and 2. Under financial control, controlled holdings sit there in full and joint ventures under joint financial control pro rata; under operational control, only the holdings the company operates itself. All other holdings belong in Category 15.
04 Which methodology?
The GHG Protocol provides for proportional attribution. How to arrive at a figure without complete data from the investees is governed for financial institutions, in practice, by the PCAF Standard, with rules for each asset class and a data quality score from 1 to 5.
Minimum boundary and what is optional Table 5.9 sets the minimum boundary of the standard, Table 5.10 lists what is optional. Managed investments sit in 5.10.
Two columns: on the left the minimum boundary under Table 5.9 with equity investments, debt with known use of proceeds and project finance; on the right the optional items under Table 5.10.

What you need to know about Category 15

What Category 15 is about

Providing capital is a service of the company, which is why Category 15 is downstream. The emissions of investees and financed projects are attributed according to the company's own share: for holdings by the share of equity, for project finance and earmarked loans by the share of total project costs from equity and debt. Because portfolios change constantly, a fixed date is chosen, such as 31 December, or a representative annual average. The choice should be disclosed and kept.

Holdings: what sits in Scope 1 and 2 and what sits here

The boundary depends on the consolidation approach and the reporting framework:

  • Equity share: subsidiaries, associates and joint ventures sit pro rata in Scope 1 and 2. Category 15 then mainly contains loans, project finance and pure financial holdings without significant influence. A company that reports under PCAF applies a control approach; the financed emissions then sit in Category 15
  • Control approach under the GHG Protocol: controlled holdings sit at 100 % in Scope 1 and 2. Under financial control, joint ventures, partnerships and joint operations under joint financial control also sit there pro rata. The GHG Protocol assumes proportional consolidation in the financial statements; it does not expressly address a joint venture accounted for using the equity method. Associates and minority holdings without control belong in Category 15
  • ESRS: fully consolidated subsidiaries and the share in joint operations, such as a construction consortium, belong to own operations. Associates count as business relationships and sit in Category 15. For joint ventures under joint financial control the assignment is not clear-cut: they too count as business relationships, but the ESRS reporting boundary corresponds to financial control under the GHG Protocol, under which they can sit pro rata in Scope 1 and 2. Where the two differ, the ESRS take precedence; as alternatives to financial control, the equity share and operational control approaches are allowed. The chosen approach must be disclosed and applied consistently, ideally agreed with the auditor
  • Small holdings: for holdings with neither control nor significant influence, a threshold may be set, for example a 1 % share, below which they are left out, provided this is disclosed and justified

Project finance

For each year of the term, the proportional emissions of relevant projects sit in Category 15. Relevant means, for example, projects in GHG-intensive sectors or above a threshold the company sets itself. A company that finances a project as original sponsor or lender also states the expected emissions over the entire project lifetime, once in the year of financing and separately from Scope 3. If the lifetime is uncertain, a range with disclosed assumptions is enough. For infrastructure such as roads, Scope 3 of the project, for example the traffic, can be much larger than its operation and should then be included.

How the calculation works

  • Investment-specific: reported Scope 1 and Scope 2 emissions of the investee times the attribution factor. Often available for listed companies; under PCAF, verified emissions give data quality score 1, unverified ones score 2
  • With physical activity data: production or energy quantities of the investee times the emission factor times the attribution factor, where no inventory is available
  • Average data: revenue of the investee or project, in the construction phase the project costs, times a sector-typical factor from an input-output database times the attribution factor. The lowest data quality, but often the starting point in broad portfolios; suitable for finding the most emission-intensive positions in a screening
  • Project-specific: emissions of the financed project times the share of total project costs
  • PCAF for financial institutions: PCAF recommends that financial institutions publish, for each asset class, a data quality score weighted by outstanding amount (1 = best, 5 = worst score) or explain why this is not possible. The score for Scope 3 must be stated separately from Scope 1 and 2. Since the reports of 2025, PCAF also requires the Scope 3 emissions of borrowers and investees for all sectors, separately from Scope 1 and 2. Unlike the GHG Protocol, PCAF allows only a fixed date aligned with the financial year

What applies under the ESRS

The revised ESRS apply to financial years from 1 January 2027; for 2026, undertakings may apply them by choice. Category 15 is reported if it is significant.

  • Financial institutions consider the PCAF Standard on financed emissions for Category 15
  • Intensity targets: for intensity targets for Category 15, financial institutions need not state absolute target values if they use physical or financial measures as denominators, disclose the absolute financed emissions within the scope of the targets and explain which factors determine their expected development and how this relates to the trends of the past three to five years
  • Managed mandates: a company that manages client funds as a fiduciary, without bearing the risks and rewards of ownership, need not provide data for these investments
  • Holdings that are also suppliers or customers: in addition to the share as an investor, the supply or customer relationship must also be taken into account, and not only in proportion to the shareholding

Typical data sources in the company

  • Schedule of holdings and consolidated financial statements: list of holdings with share and accounting method (fully consolidated, equity method, at cost)
  • Loan and securities systems: outstanding amounts, enterprise value (EVIC) or the sum of equity and debt, and use of proceeds for each financing
  • Sustainability reports of the investees and data providers for reported emissions; sector classification for average factors

Typical mistakes

  • Recording joint ventures twice or not at all, for example pro rata in Scope 1 and 2 and again in Category 15, or in neither, and not disclosing the chosen assignment
  • Dismissing the category as “only for banks”, although a holding company with minority interests has it too
  • Changing the reference date or the attribution basis from year to year, so that changes in the portfolio cannot be told apart from method effects

Frequently asked questions about Category 15

Yes, if you have holdings that are not in your Scope 1 and 2, for example associates or, depending on the approach, joint ventures. For industrial and holding companies, this can be the main item of the category.

Under the GHG Protocol, managed client funds, general corporate loans with no known use of proceeds and insurance contracts are optional. Insurers do, however, report equity investments made from premiums, because premiums are meant to count as the insurer's own capital; a threshold is possible here too. PCAF covers many of these items with its own methods, insurance contracts in a separate part of the standard; banks often use PCAF for this.

It complements it. The GHG Protocol provides for proportional attribution. PCAF supplies the calculation rules for each asset class, including its own attribution factors, for example for mortgages, motor vehicle loans or sovereign bonds, and the data quality scores.

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