Calculation formula (Certiblok 2024)
CO₂ = (EMC − EMD) × C × (T / 3)
EMC = Emissions of traditional mode (kg CO₂ / TB / 3 years)
EMD = Certiblok emissions (kg CO₂ / TB / 3 years) = 112 kg
C = Capacity in TB · T = Years of retention
How the Certiblok value is calculated (112 kg CO₂ / TB / 3 years)
The value reflects the real network composition — a weighted mix of three node categories:
Standard nodes — already-powered, unused capacity (21% of the network)2,0 kg CO₂/TB/a
Reused nodes — old drives brought back online (20.8% of the network)15,8 kg CO₂/TB/a
New nodes — new drives added to the network (58.2% of the network)18,7 kg CO₂/TB/a
Weighted average (real network) × 3 years= 112 kg CO₂ / TB
The Certiblok expansion factor is 2.7× (Reed-Solomon 80/29), against 3–4× for traditional systems. Estimated utilization: 85% (Certiblok) vs 40% (on-prem) and 75% (hyperscaler).
Reference parameters
On-prem server
679 kg CO₂ / TB / 3a
Hyperscale cloud
326 kg CO₂ / TB / 3a
Certiblok
112 kg CO₂ / TB / 3a
HDD manufacturing
20 kg CO₂ / TB
Operating energy
36,8 kWh / year / TB
Energy emission factor
0,7 kg CO₂ / kWh
Step-by-step calculation for your data
Capacity (C)1,00 TB
Years (T)3 years
Time factor (T / 3)1,00
On-prem server emissions679 × 1,00 × 1,00 = 679 kg
Hyperscale cloud emissions326 × 1,00 × 1,00 = 326 kg
Certiblok emissions112 × 1,00 × 1,00 = 112 kg
Saving vs hyperscaler214 kg CO₂ (66%)
Saving vs on-prem server567 kg CO₂ (84%)
Source: Certiblok LCA analysis (2024). Data: NRDC, IBM, Seagate LCA (Momentus 1TB), IDC Global DataSphere Forecast 2022-2026, Tannu & Nair — “The Dirty Secret of SSDs: Embodied Carbon” (2023). Conservative estimates.