Measure, Report and Cut Office Building Carbon Emissions

Type the kWh from electricity bills, gas meter readings, HVAC contractor reports and generator fuel logs into a guided inventory for each building. Every address keeps its own items, so you can see whether cooling, heating or a leaking rooftop unit drives your portfolio's emissions.

Building-Level Scope 1 & 2

Simple Monthly Bill Entry

Whole Portfolio Covered

GHG Metric dashboard of office building carbon emissions for Tower A – 12 floors: monthly Scope 1 and 2 trend and top sources

Monthly data entry screen to track building portfolio emissions, with saved items like tower A electricity

GHG Metric locations view for office building carbon emissions: 4 sites with Scope 1 and 2 totals

Building-Level Scope 1 & 2

Simple Monthly Bill Entry

Whole Portfolio Covered

QUICK ANSWER

What is the easiest way for a company with a few office buildings to track its carbon emissions?

The easiest way for a company with a few office buildings to track its carbon emissions is a tool that works them out from the energy records you already receive. You list each building's electricity, gas heating, AC refrigerant and generator diesel once, then type in monthly quantities. GHG Metric suits facility teams new to carbon reporting while keeping every calculation GHG Protocol-aligned.

Add each building you operate and select electricity, heating, air conditioning and standby generators.

Type monthly kWh, m³ of gas, kg of refrigerant topped up and liters of generator diesel.

Factors for each fuel and your country's grid are applied, with results split into Scope 1 and 2.

Review the ranking and act first on the building system with the largest share.

Sound Familiar?

What Makes Office Building Carbon Emissions Tricky to Measure

Records for one building are split between utilities, HVAC contractors, landlords and tenants, and a portfolio multiplies the problem.

Air conditioning leaks stay in contractor reports

VRF systems, split units and rooftop chillers are topped up by HVAC contractors, and the kilograms of R-410A or R-32 added rarely reach whoever compiles the building's figures.

Air conditioning leaks stay in contractor reports

VRF systems, split units and rooftop chillers are topped up by HVAC contractors, and the kilograms of R-410A or R-32 added rarely reach whoever compiles the building's figures.

Whole-building bills hide cooling and lighting

Lighting, lifts, server rooms and air handling all sit behind one electricity bill, so it is unclear whether a chiller upgrade or an LED retrofit would cut more.

Whole-building bills hide cooling and lighting

Lighting, lifts, server rooms and air handling all sit behind one electricity bill, so it is unclear whether a chiller upgrade or an LED retrofit would cut more.

Twelve addresses, twelve sets of bills

Each building's bills arrive at a different time and in a different format. In a spreadsheet, one site's missing winter month can distort the portfolio total for the whole year.

Twelve addresses, twelve sets of bills

Each building's bills arrive at a different time and in a different format. In a spreadsheet, one site's missing winter month can distort the portfolio total for the whole year.

Investors and tenants ask per square meter

Property investors, lenders and corporate tenants increasingly request Scope 1 and 2 emissions per m² of floor area to compare buildings within a portfolio.

Investors and tenants ask per square meter

Property investors, lenders and corporate tenants increasingly request Scope 1 and 2 emissions per m² of floor area to compare buildings within a portfolio.

How It Works

How to Measure Office Building Carbon Emissions Across Your Portfolio

Everything is described in facility terms: you choose what each building uses, and GHG Metric places it in the right category.

Add your buildings

Create each office, retail unit or mixed-use building you operate as a facility. Start with one address and add the rest of the portfolio later.

Choose what each building uses

Select what applies: refrigeration equipment for chillers and AC units, electricity and natural gas, heating oil or LPG, and diesel for standby generators or pool cars.

Name meters, boilers and AC systems once

Create items like "Tower A electricity" in kWh, "Basement boiler gas" in m³ or "Roof VRF R-410A" in kg, and star each one to reuse.

Enter the month, compare buildings

Type quantities from bills and contractor reports. Results per building, the portfolio total and the ranking of largest activities refresh on save.

Platform Features

Calculate, Track and Reduce Office Building Carbon Emissions

Built around the heating, cooling, lighting and standby power that offices and commercial buildings run on, across one address or many.

Calculate Each Building's Emissions From Bills and HVAC Service Reports

Build every building's inventory card by card: electricity for lighting, lifts, IT and air handling, natural gas or heating oil for boilers, refrigerant added to chillers, VRF and split systems, and diesel for emergency generator test runs. You name equipment the way your facility team does. GHG Metric picks the factor for each fuel, refrigerant and country grid, then allocates the scope.

Describe Plant Rooms in Plain Terms

AC Refrigerant Leaks Included

Generator Test Runs Captured

Inventory setup in the GHG Metric commercial building emissions calculator: lighting, lifts and IT – electricity and more

Saved items for easy monthly office building carbon emissions entry: tower A electricity and basement boiler gas

Easy Data Collection to Track Every Building in the Portfolio

Facility coordinators enter each month's figures per building in a few minutes. Name an item once, such as "Tower A electricity" or "Basement boiler gas", and its unit is kept for later months. The status grid shows which addresses still owe data, and separate items let you compare one building's heating or cooling year-round.

One Short Entry per Address

See Which Buildings Owe Data

Compare Heating Across Seasons

Easy Data Collection to Track Every Building in the Portfolio

One Short Entry per Address

See Which Buildings Owe Data

Compare Heating Across Seasons

Easy Data Collection to Track Every Building in the Portfolio

One Short Entry per Address

See Which Buildings Owe Data

Compare Heating Across Seasons

Reduce Office Building Emissions Where Each Address Uses Most

Across your buildings, the dashboard ranks the six largest activities by tCO₂e and share of total. That shows whether electricity, boiler gas or a leaking AC unit should get the next project, such as LED lighting and controls, a heat pump or a chiller replacement. Arrows against the last period confirm the effect.

Spot a Leaking Rooftop Unit

Prove a Heat Pump Retrofit

Prioritize Retrofits by Share

Biggest emission sources ranked to reduce office building emissions, led by building electricity at 54%

Reduce Office Building Emissions Where Each Address Uses Most

Spot a Leaking Rooftop Unit

Prove a Heat Pump Retrofit

Prioritize Retrofits by Share

Reduce Office Building Emissions Where Each Address Uses Most

Spot a Leaking Rooftop Unit

Prove a Heat Pump Retrofit

Prioritize Retrofits by Share

Business Features

Report Office Building Carbon Emissions to Investors and Tenants

Made for property and facility managers handling carbon next to maintenance and leases, with guided steps, plain labels and a dashboard anyone can read.

Multiple Locations

Add every office, retail unit or mixed-use building and see results per address and for the portfolio.

Emissions Dashboard

Scope 1 and 2 for each building in one monthly chart, ready for investor surveys.

Reduction Targets

Set a portfolio reduction target and follow monthly progress after each retrofit.

Multi-user Access

Facility coordinators enter data for their own buildings with role-based access.

GHG Protocol Calculations

GHG Protocol-aligned factors for heating fuels, common refrigerants and country grids.

Web-Based, No Installation

Works in any browser from head office or a building's management suite, nothing installed.

By The Numbers

Building Portfolio Emissions Tracking in Numbers

Countable facts about how GHG Metric organizes data for offices and commercial buildings.

1 combined portfolio total, with separate results for every building you add

6 largest building activities ranked, from electricity to AC refrigerant

4 inventory areas per building: power and gas, heating and generator fuels, AC, vehicles

Which Building and System Emit Most in Your Portfolio?

Request early access to be notified once electricity, gas and HVAC service figures can go in for every building you run.

Use Cases

When Building Owners and Occupiers Need Emissions Data

Property managers, facility managers and companies with several offices meet requests like these.

Property manager

A property manager answers an investor's portfolio survey

A real estate fund asks for Scope 1 and 2 emissions across eight office buildings. The property manager adds each as a location, types in a year of bills and HVAC reports, and sends per-building results with the portfolio total from the dashboard.

Facility manager

A facility manager checks a heat pump retrofit

After replacing a gas boiler with air-source heat pumps, the facility manager follows the building's gas and electricity items month by month. Boiler gas drops out of the ranking while electricity rises slightly, and the reduction target shows the net improvement.

Office manager

A consultancy with three offices responds to a corporate client

A large client asks its suppliers for Scope 1 and 2 figures for its own supply-chain reporting. The office manager sets up three offices, enters electricity, heating and AC top-ups, and finds that an aging split system adds a noticeable share.

FAQ

Office Building Carbon Emissions FAQ

Why should an office building owner or occupier track carbon emissions?

Investors, lenders, corporate tenants and large clients now ask for Scope 1 and 2 figures per building, and energy performance increasingly affects lettings and property value. Tracking also exposes waste in heating, cooling and out-of-hours lighting. GHG Metric gives owners, managers and occupiers an easy way to build those figures building by building.