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Green hosting comparison complete guide 2026

Discover the best eco-friendly hosts: EcoDataCenter, Scaleway, Digital Forest, Hetzner, Krystal, Infomaniak, OVHcloud and o2switch. Detailed PUE comparison, renewable energies and innovations.

8 hosts analyzedTechnical criteriaPrice and performance15 min read

Hosts

The 8 best green hosts analyzed

Rigorous selection based on PUE, renewable energies, innovations and value for money

EcoDataCenter

Climate-positive infrastructure

PUE 1.22 - Sweden

Scaleway

French eco-friendly cloud

PUE 1.25 AI clusters - France

Digital Forest

Alpine hydroelectric

PUE 1.24 - France

Hetzner Online

100% hydroelectric

PUE 1.10-1.16 - Germany

Krystal Hosting

B Corp certified

PUE ≤1.2 - UK

Infomaniak

B Corp score 90.1

100% recovery - Switzerland

OVHcloud

European leader

16 watercooling patents - France

o2switch

Digital sobriety

€5.04/month - 94% decarbonized

Comparison

Detailed comparison by criteria

In-depth technical analysis of environmental performance

CritèreEcoDataCenterScalewayDigital ForestHetzner
Energy source
100% renewable
Swedish hydroelectric
100% renewable
French hydroelectric
100% renewable
Alpine hydroelectric
100% renewable
Hydroelectric since 2008
PUE (efficiency)
1.22
Climate-positive certified
1.25
Optimized for AI clusters
1.24
Groundwater
1.10-1.16
TÜV certified
Environmental innovation
Climate-positive
Heats 6000 homes
Adiabatic cooling
Proprietary patent
Natural cooling
Groundwater
HT Clean Energy
Own solar parks
CO₂ savings
Climate-positive
Carbon absorption
34,000 tons/year
Avoided DC5
Minimal impact
Optimized PUE
77,000 tons/year
Saved
Proprietary technologies
Glulam wood
8x less CO₂ than concrete
ARM64 servers
Ultra-low consumption
Low-consumption servers
40-70% savings
AI optimization
Automatic cooling
Price range
Premium
Enterprise pricing
Flexible
From €12/month
Accessible
€9 → €120/month
Excellent value
Very competitive

Scores

Responsible consumption score

Evaluation of hosts for eco-responsible companies

EcoDataCenter

A++
EnergyA+
InnovationA++
World's first climate-positive - Sweden

Scaleway

A+
AI PUEA+
CO₂ avoidedA++
French eco-friendly cloud

Digital Forest

A+
PUEA+
LocalA+
Alpine hydroelectric

Hetzner

A+
PriceA+
PUEA+
German excellence

Krystal

A+
B CorpA+
UptimeA+
World's first B Corp

Infomaniak

A+
B CorpA++
RecyclingA+
B Corp standard 90.1

OVHcloud

A-
InnovationA
ScaleA+
European leader

o2switch

A+
PriceA++
SimplicityA+
Digital sobriety

Market Reality

The hidden problem of multi-cloud

The majority of cloud giants still rely heavily on fossil fuel energy mixes to ensure their global availability.

Multi-cloud infrastructures (AWS, Azure, Google) often buy green certificates to offset actual consumption based on coal or gas, depending on server location. This accounting 'net-zero' approach differs radically from an infrastructure physically powered by renewable energies.

60%
Fossil energy
Global datacenter average
+40%
Water consumption
Standard cooling
Opacity
Real traceability
Green certificates (REC) vs reality

Infrastructure

FileVert + Scaleway: ecological infrastructure

FileVert relies on Scaleway infrastructure to offer an ultra-sober and high-performance transfer solution.

Scaleway Infrastructure

  • •Ultra-modern French datacenters
  • •Proprietary adiabatic cooling patent
  • •ARM64 ultra-low consumption servers
  • •40% less energy vs market standard

FileVert Optimization

  • •Intelligent file compression
  • •Optimized temporary storage (2-15 days)
  • •Automatic deduplication
  • •98.7% CO₂ savings vs competition

Result: Ecological Excellence

  • •Measurable minimal carbon impact
  • •Green Web Foundation compliance
  • •Total transparency of metrics
  • •100% certified French infrastructure

Recommendations

Eco-responsible companies: recommendations by use case

Choose the hosting solution for your eco-friendly company adapted to your ecological approach and responsible consumption.

Climate-positive company

EcoDataCenterWorld champion
World's first climate-positive center
Heats 6000 homes with recovery
Built with glulam wood
Sweden: 96% fossil-free electricity

Eco-friendly cloud & AI

ScalewayFrench green cloud leader
PUE 1.25 maintained even AI clusters
34,000 tons CO₂ avoided/year DC5
Proprietary adiabatic cooling patent
100% French hydroelectric energy

Eco-responsible SMEs tight budget

o2switchDigital sobriety
€5.04/month unique offer
94% decarbonized energy
Maximum simplicity
Dedicated French support

High-performance e-commerce

Krystal HostingB Corp pioneer
World's first B Corp host
99.98% guaranteed uptime
2088 own solar panels
1 billion trees by 2030

Multi-region enterprise

OVHcloudFrench innovation
16 liquid cooling patents
100% renewable energy by 2025
European infrastructure leader
Multi-country compliance

Open-source & development

InfomaniakSwiss excellence
B Corp score 90.1 (world standard)
Servers used 15 years vs 3-5 years
100% energy recovery
Open-source & privacy focus

Frequently Asked Questions

Frequently asked questions

Answers to common questions about green hosting and selection criteria

PUE (Power Usage Effectiveness) measures the energy efficiency of a datacenter. The closer to 1, the more efficient the center. A PUE of 1.22 (EcoDataCenter) is excellent, as it means only 22% of total energy is used for cooling and infrastructure.
Renewable energy (hydroelectric, solar, wind) is naturally decarbonized. Decarbonized energy can include nuclear. For truly green hosting, prioritize 100% renewable with guaranteed origin certificates.
Yes, EcoDataCenter is the world's first climate-positive datacenter. It heats 6000 Swedish homes with its heat recovery, largely offsetting its emissions. Built with glulam wood, it emits 8x less CO₂ than a concrete datacenter.
o2switch is perfect for tight budgets: €5.04/month with 94% decarbonized energy. For a bit more, Digital Forest (€9/month) offers excellent value with PUE 1.24 and natural cooling.
Yes, Scaleway maintains a PUE of 1.25 even with its AI clusters thanks to its proprietary adiabatic cooling patent. It avoids 34,000 tons of CO₂/year with its DC5 and uses 100% French hydroelectric energy.
Check: 1) Energy origin certificates, 2) Official PUE, 3) Certifications (B Corp, ISO 14001), 4) Transparency on emissions, 5) Environmental innovations (cooling, materials). Avoid greenwashing with concrete evidence.

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