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Portfolio Carbon Footprint Calculator

← All Calculators·Carbon & Environmental Impact

The default illustrative portfolio model estimates 7.5 Tonnes CO2e/yr. Explore how illustrative emissions-intensity assumptions change a portfolio model. This does not measure your holdings or demonstrate real-world emissions avoided by an investment decision.

Key Model Assumptions & Benchmark Data

  • U.S. Environmental Protection Agency (EPA) & PCAF (EPA GHG Equivalencies (retrieved 2026-10-20)):EPA GHG Equivalencies: ~45 urban tree seedlings grown for 10 years per metric ton CO2 (0.022 tCO2/tree). The 145, 75, and 28 tCO2e/$1M strategy values are illustrative calculator model assumptions.

Interactive Model & Inputs

Adjust variables below to instantly compute real-time projections and amortization.

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Calculation Results & Payback Projections

Modeled Emissions Difference vs. Baseline
7 Tonnes vs illustrative baseline
Carbon Intensity
75 tCO2e/$1M
Annual Financed Emissions
7.5 Tonnes CO2e/yr
Equivalent Trees Planted
315 Seedlings Grown 10 Years Equiv

Financed Emissions & Portfolio Carbon Accounting

Every dollar invested in public equities, corporate bonds, or private equity platforms indirectly finances real-world greenhouse gas emissions. Our Portfolio Carbon Footprint Calculator applies a simplified financed-emissions intensity model inspired by the Partnership for Carbon Accounting Financials (PCAF) framework.

Carbon intensity is modeled in metric tonnes of CO₂ equivalent per million dollars invested (tCO₂e / $1M) using three illustrative calculator presets: 145 tCO₂e / $1M for a traditional broad-market index, 75 tCO₂e / $1M for an ESG-screened portfolio, and 28 tCO₂e / $1M for a climate-solutions tilt.

Under these model assumptions, shifting allocations from the 145 tCO₂e / $1M baseline to the 75 or 28 tCO₂e / $1M preset reduces modeled portfolio carbon intensity by 48% to 81%.

Portfolio Carbon Intensity & Avoided Emissions Formula

Financed Emissions (tCO2e) = (Portfolio Value / $1,000,000) × Style Intensity Factor; Trees Equiv = Avoided Tonnes × 45

Multiplies your portfolio value (in $ millions) by the selected strategy’s illustrative carbon intensity factor (145, 75, or 28 tCO2e/$1M) and converts avoided tonnes against the 145 tCO2e/$1M baseline using the EPA GHG Equivalencies factor (~45 tree seedlings grown for 10 years per metric ton CO2).

Worked example: understand your inputs

The selected scenario uses 75 tCO2e/$1M. Applied to this portfolio value, that produces 7.5 Tonnes CO2e/yr, with a modeled difference of 7 Tonnes vs illustrative baseline against the baseline.

Illustrative starting inputs for this example. Your results above change when you edit the calculator.
InputExample valueWhat to enter
Portfolio Value100000Portfolio market value in dollars.
Portfolio StyleesgIllustrative emissions-intensity scenario: index, ESG or climate-focused.

How to interpret the result

Value divided by one million, multiplied by the scenario intensity, produces financed tonnes. Changing the scenario demonstrates sensitivity to an assumed intensity; it does not measure your holdings or show emissions physically prevented.

What this estimate leaves out

The 145, 75 and 28 tonne factors are illustrative, not current verified index measurements. A real financed-emissions assessment requires issuer data, attribution factors, reporting boundaries and disclosure dates. Tree equivalents are illustrative comparisons, not offsets or verified removals.

Carbon Emissions Scope Breakdown

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Scope 1: Direct Operations

Direct emissions from company-owned facilities, factories, industrial boilers, and vehicle delivery fleets.

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Scope 2: Purchased Energy

Indirect emissions generated from purchased electricity, steam, heating, and cooling consumed across corporate facilities.

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Scope 3: Value Chain

Broader upstream supply chain emissions and downstream customer usage of manufactured products and services.

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Scenario Comparison Presets

Compare your portfolio across three illustrative intensity presets: Traditional Index (145 tCO2e/$1M), ESG Screened (75 tCO2e/$1M), and Net-Zero / Climate Solutions (28 tCO2e/$1M).

Frequently Asked Questions

What is a portfolio carbon footprint?

A portfolio carbon footprint measures the greenhouse gas emissions associated with your investment capital, expressed in metric tonnes of CO₂ equivalent (tCO₂e) per million dollars invested.

What is the difference between Scope 1, Scope 2, and Scope 3 emissions?

Scope 1 covers direct emissions from company facilities. Scope 2 covers indirect emissions from purchased electricity. Scope 3 covers broader supply chain and product lifecycle emissions.

How does sustainable ESG investing reduce portfolio emissions?

Screening out high-emitting producers and tilting allocations toward lower-intensity companies reduces modeled portfolio carbon intensity relative to an unscreened broad-market baseline.

Where does the 45 tree seedlings per tonne factor come from?

The U.S. EPA Greenhouse Gas Equivalencies Calculator estimates that one medium-growth urban tree seedling grown for 10 years sequesters approximately 0.022 metric tons (22.2 kg) of CO₂, or roughly 45 tree seedlings per metric ton of CO₂.

Authoritative Benchmark Sources & Active Incentives

EPA GHG Equivalencies (retrieved 2026-10-20)

EPA Greenhouse Gas Equivalencies Calculator & Illustrative Intensity Presets (U.S. Environmental Protection Agency (EPA) & PCAF)

EPA GHG Equivalencies: ~45 urban tree seedlings grown for 10 years per metric ton CO2 (0.022 tCO2/tree). The 145, 75, and 28 tCO2e/$1M strategy values are illustrative calculator model assumptions.