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Framework Alignment

Scope emissions are calculated in accordance with the GHG Protocol and GRESB Guidelines. They follow the same methodology used for calculating whole building location-based and market-based emissions, with an additional step of categorizing emissions based on landlord and tenant sources.

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Performance Metrics

The following scope emissions metrics are automatically calculated any time data is updated for any applicable energy meter.
MetricDefinition
Scope 1 EmissionsDirect emissions from onsite fuel combustion associated with landlord spaces.
Scope 2 (Location-based) EmissionsIndirect location-based emissions from energy generated offsite associated with landlord spaces.
Scope 2 (Market-based) EmissionsIndirect market-based emissions from energy generated offsite associated with landlord spaces.
Scope 3 EmissionsAll emissions from energy associated with tenant spaces.

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Emissions Factors

Scope emissions calculations use the same underlying emissions factors applied in whole building location-based and market-based emissions calculations. These factors are applied consistently across scopes, with emissions subsequently allocated to Scope 1, Scope 2, or Scope 3 based on the source of energy consumption and ownership or control boundaries.

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Green Power Adjustments

Onsite and offsite green power is treated as zero-emissions electricity. When calculating Scope 2 location-based and market-based emissions, green power is incorporated differently than in whole building emissions calculations. Specifically, electricity consumption values are adjusted using the following two-step process:
  • Step 1 (Meter-level Adjustment): For each onsite renewable electricity meter, total consumption is adjusted by subtracting the portion of electricity for which the associated RECs are owned (i.e. green power). This is performed at the meter level, as meters may be assigned to different space types. At the same time, total offsite green power associated with electricity that is exported or for which RECs are arbitraged, is calculated for the meter.
  • Step 2 (Scope-level Adjustment): After meter consumption is aggregated by scope, total electricity attributed to landlord-controlled spaces (i.e. Scope 2 electricity) is adjusted by subtracting all offsite purchased green power associated with the property and any offsite exported or arbitraged green power associated with meters included in the roll up.
    Step 2 ensures that all offsite green power is credited to the landlord (Scope 2) when applicable
Click here to learn more about green power.

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Methodology

Group 1000002840 The methodology for calculating scope emissions extends location-based and market-based calculations by incorporating landlord and tenant spaces.
1

The energy reporting level for each property is determined

  • Click here to learn how to set the reporting level.
2

All applicable energy meters are collected based on reporting level

  • If Reporting Level = Whole Building → All in-metric meters are collected.
  • If Reporting Level = Split → All meters (in-metric & out-of-metric) are collected.
3

For electricity meters, consumption totals are adjusted for onsite green power.

For scope emissions calculations, onsite green power is independently accounted for each onsite electricity meter based on REC ownership.
LB-Adjusted Meter Electricity: [Meter Electricity] - [Onsite Green Power]
4

The scope type is determined for each meter

The scope type is determined for each meter by evaluating the meter type, meter space assignment and property reporting level based on the scope mappings.
5

Monthly consumption values are aggregated by energy subtype for each scope type.

Monthly energy consumption totals are calculated by aggregating consumption values across meters of the same energy subtype for each scope type.e.g. Scope 1 Natural Gas, Scope 2 Electricity, Scope 3 Natural Gas, Scope 3 Electricity
6

Scope 2 electricity totals are adjusted for offsite green power when applicable.

For location-based emissions, no adjustments are made because offsite green power does not impact location-based emissions.For market-based emissions, scope 2 electricity totals are adjusted by further subtracting offsite green power. Onsite green power was already adjusted in Step 4.
MB-Adjusted Scope 2 Electricity: [Total Electricity] - [Offsite Green Power]
7

Emissions values are calculated for each scope type.

  1. Emissions factors are determined by the energy subtype and property location.
  2. Monthly energy values are multiplied by the appropriate emissions factor.
    • Market-based calculations use MB-adjusted scope 2 electricity values
  3. Monthly & annual metrics are calculated for rolling 12-month periods

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Tracking Performance Metrics

Users can analyze scope 1,2,3 location-based and market-based emissions across properties and portfolios in multiple locations.

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Portfolio Level

  1. Portfolio → Spaces → Emissions → Whole Building (All Spaces) Emissions
    • Annual portfolio-level emissions metrics & trends (whole building)

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Property Level

  1. Property → Spaces → Emissions
    • Scope 1,2,3 location-based and market-based emissions trends
  2. Property → GRESB → GHG
    • Scope 1,2,3 location-based and market-based emissions trends

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EXCEL Reports

  1. Portfolio → Reports → Performance
    • Scope 1,2,3 Emissions Report