The Most Sustainable Hotel Chains, Compared
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Some hotel chains are genuinely restructuring around sustainability. Others are greenwashing. Here’s how to tell the difference.
Dear IMPT Family,
The hotel industry is surprisingly fragmented. Unlike airlines (where you can compare carbon between carriers relatively easily), hotels range from independent boutiques to global chains with thousands of properties, each with different environmental practices. But some chains have committed genuinely to sustainability, measuring emissions, setting science-backed targets, and restructuring operations.
Others have merely added a “green room” option and called it commitment.
Here’s what genuine hotel sustainability looks like, and which chains are actually doing it.
🔥 Key Highlights 🔥
1️⃣ Sustainability commitment requires measurement: real chains publish energy and water data
2️⃣ The best chains are pursuing net-zero by 2030–2050 with specific interim targets
3️⃣ Certification matters: Green Key, LEED, Travelife indicate external scrutiny
4️⃣ Smaller chains often outperform larger ones—independence matters
5️⃣ Location matters as much as the chain—a “green” hotel is irrelevant if you fly 12 hours to reach it
1️⃣ Commitment and Measurement
Real sustainability starts with measurement. A chain serious about reducing emissions will publish data: energy consumption per guest-night, water use, waste diversion rates, scope of emissions measurement. Vague claims (“we’re committed to sustainability”) without numbers are greenwashing.
Marriott publishes data. IHG publishes targets. Accor has set science-backed net-zero goals. These chains measure their footprint and report publicly. That transparency is foundational.
2️⃣ Net-Zero Targets and Interim Milestones
The best chains have published net-zero targets (typically 2030 for scopes 1–2 emissions, 2050 for scope 3). They’ve also published interim targets: 50% reduction by 2030, for example. These specific milestones signal serious commitment. They’re measurable, reportable, and leave companies accountable.
Chains without interim milestones are planning to decarbonise at the end, not along the way—which rarely works.
3️⃣ Specific Sustainable Practices
Look for chains that have:
✔ Renewable energy: solar, wind, or renewable energy purchase agreements covering significant percentages
✔ Water systems: low-flow fixtures, water recycling, rainwater harvesting, wastewater treatment
✔ Food: local sourcing, reduced meat (especially beef), composting
✔ Waste: minimal single-use plastics, comprehensive recycling and composting, zero-landfill goals
✔ Supply chain: working with suppliers on carbon reduction
4️⃣ Leading Chains (With Caveats)
Accor (includes Sofitel, Novotel, ibis, Raffles, Fairmont): Published net-zero 2050 target with 2030 interim goals. Requires all properties to measure and report emissions. Green Label certification for properties. Scope is broad, covering 4,500+ properties. Caveat: implementation varies by region; some markets lag.
IHG (Holiday Inn, Crowne Plaza, InterContinental): Net-zero 2050 target, 50% emissions reduction by 2030. Requires properties to use their carbon measurement tool. Improving but less comprehensive than Accor’s mandate.
Marriott: Net-zero 2050 target, 25% reduction by 2025. Publishes data but targets are less aggressive than competitors. Size and franchisee structure (most are franchised) makes uniform implementation difficult.
Hilton: Net-zero 2050 target, 25% reduction by 2025 (same as Marriott, less ambitious than Accor/IHG). Most properties are franchised, limiting direct control.
5️⃣ Smaller and Independent Chains
Smaller independent hotels and local chains often outperform large chains on sustainability per property. A 30-room family-run eco-lodge in Costa Rica may have lower emissions intensity than a 500-room international chain hotel. But measuring and comparing is harder because data isn’t centralised.
When booking independent properties, look for Green Key certification or similar verification. It’s more laborious but more reliable.
6️⃣ What Certification Means
Green Key (international): Hotels are independently audited on environmental management. No longer perfect but requires real compliance.
LEED (US-focused): Rigorous building performance certification, but focuses on the building, not ongoing operations. A LEED-certified hotel with poor day-to-day practices can still have a high footprint.
Travelife (international): Audits environment, social, and economic practices. Strong on supply chain transparency.
EU Ecolabel (Europe): Stringent environmental criteria, third-party verified annually.
7️⃣ Location Context
Here’s the caveat that matters most: a “green” hotel accessible only by a 12-hour flight has already lost the carbon argument. The transport to reach it dwarfs the property’s operational savings. A modest hotel reachable by train has lower total impact, even if the hotel itself isn’t certified.
Looking Ahead — Measure Twice, Choose Once
When booking, prioritise: proximity (reachable without long flights), chain commitment to net-zero with interim targets, and third-party certification. Accor’s properties are your safest bet for chain sustainability, followed by IHG and Marriott. But check the individual property’s certification and location context. And book through IMPT to earn carbon credits on your stay, further offsetting your accommodation’s footprint.
Let’s keep building — together. 🌍💚
