Scope 1, 2 and 3 for Hospitality Without ESG Jargon

Scope 1: what the hotel owns and burns

Scope 1 is the easiest to picture because it is physical and local. Any source the property owns or controls that releases greenhouse gases by combustion or leakage counts here. On most hotels that means gas or oil boilers for heating and hot water, diesel generators for backup power, gas stoves in kitchens, and fuel for shuttle vans, service cars and grounds equipment.

The category managers most often forget is refrigerants. Air-conditioning systems, chillers, walk-in fridges and freezers hold gases with a global warming potential thousands of times higher than CO2. Even a small leak matters in tonnes of CO2-equivalent, and when units are serviced or scrapped without proper gas capture, that loss counts as Scope 1. EPA guidance explicitly lists refrigeration and air conditioning among the classic direct sources.

A practical starting point: begin your inventory not with formulas but with a walk-around. Tour the boiler room, parking area, kitchen and server rooms — nearly every Scope 1 source is visible to the eye.

• Natural gas, oil or liquefied gas burned for heating, hot water and cooking.
• Diesel used by backup generators.
• Fuel for owned or leased vehicles: shuttles, service cars, mowing equipment.
• Refrigerant gas lost from air conditioning, chillers, fridges and freezers.

Scope 2: energy you buy, not fuel you own

Scope 2 covers the indirect emissions released when the electricity, steam, heat or district cooling you purchase is generated. You are not burning the fuel yourself, but the footprint of the grid or the supplier is attributed to you as the consumer. In practice this is utility-bill territory: your electricity provider's generation mix, plus any purchased heating or cooling services.

Reducing Scope 2 means either consuming less, shifting load away from peaks, or moving to renewable supply through green tariffs, energy attribute certificates or power purchase agreements where your market offers them. One accounting nuance matters: a hotel that buys certified green power can report a lower market-based Scope 2 even though the physical grid has not changed — so state which method you used.

For most properties Scope 2 is the largest slice of manageable operational emissions, which is why LED lighting, modern boilers, heat pumps and load management pay off twice: lower bills and a lower reported footprint.

• Purchased electricity for lighting, HVAC, kitchens, laundry and guest rooms.
• Purchased steam, district heat and district cooling.
• The choice between location-based and market-based accounting when renewable contracts are in place.

Scope 3: where a hotel's footprint is actually largest

Scope 3 covers everything else a hotel's activity triggers but does not own or control. For tourism and accommodation this is usually the largest share. A peer-reviewed study of two properties in Kazakhstan, published in PLOS ONE, found Scope 3 accounted for 57–62% of total footprints, driven mainly by tourist transport, food procurement and waste.

Within a single property the heavy categories are purchased goods (above all food and beverage and in-room amenities), outsourced laundry, waste disposal, upstream fuel, staff commuting and business travel, and guest transport to the site. The GHG Protocol lists 15 Scope 3 categories, and no hotel is expected to quantify all of them in year one — materiality and prioritisation decide.

A revealing detail: the guest's trip to the hotel often dominates the footprint of a single stay, but under the rules it belongs to the traveller's or tour operator's Scope 3, not the hotel's report. That does not stop a hotel influencing how guests arrive — through low-carbon transfer partnerships or rail promotion — it simply means those emissions stay out of the property's own inventory.

• Food and beverage procurement — the largest purchased-goods item for most hotels.
• Outsourced laundry, the one Scope 3 category HCMI includes because it is material and within hotel influence.
• Guest transport to and from the property, including flights and transfers.
• Waste disposal and wastewater treatment.
• Staff commuting, business travel and upstream fuel production.

Measure once, compare forever: HCMI and the per-room-night number

The Hotel Carbon Measurement Initiative (HCMI) is the industry's common, free methodology for the carbon footprint of a hotel stay. It was developed by the Sustainable Hospitality Alliance and the World Travel & Tourism Council with 23 hotel companies and KPMG as technical advisor; Cornell's Center for Hospitality Research contributed materiality research, but the method itself is owned by those industry bodies, not the university.

HCMI standardises two metrics: kilograms of CO2e per occupied room-night and per square metre of meeting space per hour. The calculation chain builds a whole-hotel footprint across Scopes 1 and 2 plus outsourced laundry, subtracts private or leased space, apportions the rest between guest rooms and meeting space on a conditioned-floor-area basis, then divides by occupied room-nights.

An important caveat: the division uses occupied, not available, room-nights. Because the energy base is largely fixed, a half-empty hotel reports a higher per-room-night figure than the same hotel at full occupancy. When comparing properties or periods with very different occupancy, disclose the level or the numbers mislead.

For corporate clients and event venues these metrics have become near-standard: companies reporting under Europe's CSRD put business-travel hotel nights into Scope 3 Category 6 and increasingly ask properties for an HCMI-compatible number in the request-for-proposal.

In Europe, the CSRD directive and the ESRS E1 standard expect companies to account for all material Scope 3 categories, including business-travel nights. For a travel-heavy buyer, hotel stays can be a notable share of that footprint, so RFPs increasingly ask for the per-room-night number. A hotel that can hand over a defensible figure on request wins business over one that does not measure at all.

• kg CO2e per occupied room-night — the headline figure a corporate travel buyer multiplies by nights stayed.
• kg CO2e per m² of meeting space per hour — the figure used to footprint a conference or event booking.
• The method applies operational control and one consistent apportionment basis, which makes numbers across hotels comparable.
• Prepare a standard RFP response with your kg CO2e per occupied room-night figure.
• Split data by property type (city, resort, conference) and region where relevant.
• State the data year and occupancy level so the client can interpret the figure correctly.

Where to start without a sustainability department

A first inventory does not require expensive consultants. Gather electricity, heat and water bills, fuel receipts, refrigeration maintenance logs, waste invoices and procurement records. Green Initiative's practical guidance recommends exactly this data set as the starting point: utility bills, fuel records, maintenance logs, waste invoices and transport logs for guests, staff and deliveries.

Then apply the recognised frameworks: the GHG Protocol for emissions accounting and ISO 14064-1 for verified reporting. To turn activity into CO2-equivalent, use national emission factors for the grid and fuels and global-warming-potential values for refrigerants.

Next, analyse where your largest sources sit and prioritise by the greatest impact for the least cost. Phasing out high-GWP refrigerants and sealing systems, for example, can move Scope 1 more than an expensive boiler overhaul, while tackling food waste and local sourcing quickly shifts Scope 3.

Honest limitations: many Scope 3 categories, such as the production of purchased food, have to be estimated from standard factors rather than measured directly, and first-year data will be rougher than later years. That is normal — the value of an inventory lies in repeatability and year-on-year comparison, not instant perfection.

• Build an equipment and fleet register so nothing is missed in Scope 1.
• Collect energy and heat bills for at least 12 months as the Scope 2 base.
• Choose three to five material Scope 3 categories and start collecting their data in week one.
• Document site boundaries: what belongs to the hotel and what is private or leased space.
• Pick a Scope 2 accounting method and keep it consistent across reporting years.

Boundaries and honest trade-offs in choosing scope

The key decision in any inventory is defining boundaries: does the whole complex count, how are leased floors and on-site apartments treated, and what about staff accommodation? HCMI resolves this through operational control: everything inside the premises that guests and event attendees can access is in; private and leased space is removed by submetering or by apportioning conditioned floor area.

The second trade-off is which Scope 3 categories to include. HCMI deliberately includes only outsourced laundry, since it is material and within the hotel's influence, while treating guest travel and purchases as outside the operational footprint. A hotel building a fuller corporate report can widen the scope to count food, waste and guest transport, but then it must document why those categories are material.

Franchise networks face a special case. The operating manager reports Scopes 1 and 2 for managed hotels, while energy use at franchised properties falls into the brand owner's Scope 3. Large groups such as IHG make this split explicit in their CDP disclosures, separating managed (Scopes 1–2) from franchised (Scope 3) hotels.

• Boundaries and category choices must be documented so the report can be reproduced and assured.
• Apply the same apportionment basis between rooms and meeting space every year.
• When disclosing Scope 3, state which of the 15 categories you counted and why the rest are immaterial.