11 · Comparison Studio

Like for like, with the caveats attached

Comparing facilities is only meaningful when the comparison declares what is measured, what is modelled and what is inferred. Every row here carries the same evidence grade as its source field.

Selection

3 of 4 facilities

Yotta NM1GDC - Kolkata 1STT Kolkata DC 2 (New Town)

Attribute
Identity
Operator	Yotta Data Services	NTT DATA	STT GDC India
Location	Panvel (Navi Mumbai), Maharashtra, India	Kolkata (New Town), West Bengal, India	Kolkata (New Town), West Bengal, India
Status	Operational	Operational	Operational
Class	COLO_SMALL	WHOLESALE	WHOLESALE
Land use	Peri-urban fringe	Suburban IT park / business park	Suburban IT park / business park
Infrastructure
IT capacity (MW)	52.00	40.00	34.00
Ultimate capacity (MW)	52.00	40.00	34.00
PUE	1.50	1.60	1.50
WUE (m³/MWh)	2.15	2.15	2.15
Cooling (inferred)	Evaporative cooling towers (modelled from WUE)	Evaporative cooling towers (modelled from WUE)	Evaporative cooling towers (modelled from WUE)
Impact
Energy (MWh/yr)	3,41,640	3,64,416	2,90,394
Carbon (tCO₂e/yr)	2,42,564	2,58,735	2,06,180
Water (m³/yr)	7,34,526	7,83,494	6,24,347
Waste heat (MW th)	39.0	41.6	33.2
Noise (dB(A) at 50 m)	67.2	66.0	65.3
Residents within 1 km	5,655	12,566	12,566
Context
Water stress band	High	Medium-High	Medium-High
Grid carbon (tCO₂e/MWh)	0.710	0.710	0.710
Renewable grid (%)	22	22	22
Residential distance (m)	800	300	300
Employment (FTE)	260	200	170
Evidence
Documented complaints	0	0	0
Composite (0–100)	72.6	77.8	75.9
Risk class	Very High	Very High	Very High
Max rank shift under reweighting	156	84	70

Peer fingerprint

Yotta NM1

Carbonp99 · 243k tCO₂e/yr

Energyp99 · 342k MWh/yr

Waste heatp99 · 39.0 MW thermal

Waterp99 · 735k m³/yr

Noisep100 · 67.2 dB(A) at 50 m

Communityp12 · 5.7k residents within 1 km

Percentile within India (290 facilities) — a relative position, not a judgement of harm.

Peer fingerprint

GDC - Kolkata 1

Carbonp99 · 259k tCO₂e/yr

Energyp99 · 364k MWh/yr

Waste heatp99 · 41.6 MW thermal

Waterp99 · 783k m³/yr

Noisep99 · 66.0 dB(A) at 50 m

Communityp21 · 12.6k residents within 1 km

Percentile within India (290 facilities) — a relative position, not a judgement of harm.

Peer fingerprint

STT Kolkata DC 2 (New Town)

Carbonp99 · 206k tCO₂e/yr

Energyp99 · 290k MWh/yr

Waste heatp99 · 33.1 MW thermal

Waterp99 · 624k m³/yr

Noisep99 · 65.3 dB(A) at 50 m

Communityp21 · 12.6k residents within 1 km

Percentile within India (290 facilities) — a relative position, not a judgement of harm.

THE WEAKEST PILLAR IN THIS WORKBOOK. Noise is a capacity-based engineering proxy and setback is a land-use class band. Neither has been measured at any facility — use for screening only.

Differences between facilities in energy, carbon, water and heat are largely differences in assumed capacity, PUE and WUE. Where two facilities share those parameters, the comparison reduces to a difference in siting context — which is where the more meaningful distinctions live.