How well evidenced is it
Running capacity. The site is operational or expanding. On record: named funder, dated, sized phase, three or more sources, dated source in the last 24 months. Criteria.
AI workloads
StatusLikely
Tower 5 marketed as hyperscale-ready at 43.2MW; Sify has publicised GPU cloud offerings.
Access to AI chips
GradeNo US licence required
This country carries no US destination-based licence requirement for advanced AI chips as the rules are enforced today. Access is a commercial matter between the project and its vendors. Criteria.
Phases
Towers 1 and 2 · Operational22 MW
Tower 3 · Operational24 MW
Tower 4 · Operational8.1 MW
Tower 5 (30.24MW installed at Jun 2025) · Operational43 MW
Towers 11 and 12 · Under construction39 MW, target 2028
Towers 6 and 7 (MIDC and MoEFCC approvals pending) · Land and permittingSize not published
Towers 8, 9, 10 · AnnouncedSize not published
Stage history
Who is behind it
OperatorSify Infinit Spaces · Colocation
Funder, EquitySify Technologies
Funder, DebtIFC
Who uses the compute
Checked on 2026-10-01. No user of this capacity is on the public record. ArusGrid read the operator's releases, the landlord's and contractors' exchange filings, regulator and lender documents and interconnection records. Most colocation leases are confidential, so this says nothing about occupancy.
Money at this site
ArusGrid estimate, building costabout US$767m to US$1.1bn
No figure has been announced. This range is 136 MW of planned IT load times a published benchmark of US$6.64 per watt for Mumbai, plus or minus 15 percent, with 10 percent more at the top for liquid cooling because the project is AI-positioned. It covers the building and its mechanical and electrical plant. It excludes land, grid works, servers and fees.
Benchmark: Turner & Townsend Data Centre Construction Cost Index 2025, as reported by Data Storage Asia. An estimate is never added to any total on the site.
Colocation price per kW of IT load per month
ArusGrid estimate, grade CINR 6,800 to INR 8,900 (about USD 81 to 106)
ArusGrid estimate, grade C. Published band for this country. Priced on the hyperscale band, which already reflects anchor deals. No usable capex for this site. Electricity unstated in the band. An estimate, never a quote, computed by fixed rules published on the Colo prices page and never counted in any total.
Project team
Engineering consultantEcofirst Services Limited · INR 21.24m (≈US$0m) · Nov 2024 Confirmed source ↗ Data centre design consultancy services for Towers 11 and 12, purchase order dated 29 Nov 2024. The DRHP table is laid out in columns and the vendor is matched to this line by its order in the list.
Design and build contractorGargantuan Industrial Space Solutions Private Limited · Mar 2025 Confirmed source ↗ Built-to-suit sub-lessor: deliver two multi-storey data centre buildings (Towers 11 and 12, Plot R-978 TTC Rabale) in two phases, obtain pre-construction approvals; hand over first DC within 18 months and second within 34 months from Feb 16, 2024
Land
LandlordGargantuan Industrial Space Solutions Private Limited · 13,152.28 sqm · leased · Mar 2025 Confirmed source ↗ Plot R-978, TTC Industrial Area, Rabale, sub-leased to Sify Infinit Spaces for Towers 11 and 12 under a sub-lease agreement dated 18 Mar 2025 (term sheet 22 Sep 2023), per the DRHP. The sub-lessor holds the environmental clearance for 40,640 sqm built-up area.
Land sellerShareholders of Patel Auto Engineering Company (India) Pvt Ltd (holder of MIDC-allotted land in Rabale) · INR 525m (≈US$6m) · leasehold · Mar 2023 Inferred by ArusGrid source ↗ Share purchase dated 22 Mar 2023 of a company registered in Rabale whose only asset was land allotted by MIDC. Sify accounts for it as leasehold rights. Sify also lent the company INR 85m. The company was merged into Sify Infinit Spaces, with NCLT approval on 9 Jan 2025 effective 1 Apr 2023. Plot number and area are not given.
Why we think so. The 20-F says the acquired company was registered in Rabale, Navi Mumbai and held only MIDC-allotted land, and that it was merged into Sify Infinit Spaces, the data centre arm. The 20-F does not say the plot is part of the data centre campus. The row's notes record a pending MIDC plot amalgamation for Towers 6 and 7, which this land may serve.
LandlordMaharashtra Industrial Development Corporation (MIDC) · leasehold · Oct 2025 Confirmed source ↗ MIDC is the lessor of Plot R-979 (Towers 4 and 5) and Plot R-847/2, the latter on a 95-year lease from 1 Oct 2004. Towers 1 to 3 (Plots R-847/1/2, R-847/1/3 and R-846/2) are sub-leased from Sify Technologies under agreements of 24 Nov 2021, on 95-year leases running from 1 Jul 2007 (Towers 1 and 2) and 1 Jun 1995 (Tower 3). A further plot, R-979/1, is leased from MIDC with a stated date of 22 Mar 2027. No areas are given.
Power supply
Dedicated substationon-site substations · 220kV Confirmed source ↗ Operator claims up to 70% renewable energy and 99MW of green power from solar and wind. · 110kV substation for towers 1 to 3 and 220kV GIS substation for towers 4 to 6, per operator. · Applies to the whole campus.
Dedicated substationOn-site substation · 110kV Reported source ↗ Serves Towers I to III. Towers IV to X use the 220kV GIS substation. · Applies to the whole campus.
Renewable power dealSify (PPAs, counterparties not named) · 99 MW Reported source ↗ 99MW of solar and wind. Brochure says up to 79% renewable energy and 200MW+ contracted green power across Sify. · Undated operator brochure. · Applies to the whole campus.
Water and cooling
CoolingHybrid air and liquid cooling Confirmed source ↗ Tower 5 (43.2 MW built) supports up to 130 kW/rack direct-to-chip; first NVIDIA DGX-ready certified facility in India for air and liquid cooling. Sify factsheet (undated) describes air-cooled chillers with adiabatic accessories.
IFC says all Sify data centres except Noida 1 use air cooling, and the company does not depend on groundwater. Rabale T5 is IGBC Platinum rated. Sify's company-wide WUE was 1.805 in FY2025, not a Rabale figure. Sify's factsheet describes air-cooled chillers with adiabatic accessories for Towers 5 to 10.