--- title: Kao Data Harlow Campus date: 2026-10-25T07:56:00+00:00 canonical_url: "https://datacentrefinder.co.uk/data-centres/kao-data-harlow-campus" section: Data Centres date_modified: 2026-10-25T07:58:43+00:00 operator: Kao Data --- # Kao Data Harlow Campus East of England · England · United Kingdom Kao Data Harlow is a 15-acre data centre campus at London Road, Harlow CM17 9NA, with four carrier-neutral data centres planned to support 71 MW of IT load. [Information supplied ](#verification) - Free to use - Independent service - No obligation ## The facility at a glance. [Rack space **Quarter rack · Half rack · Full rack · Private cage · Private suite**Explore rack sizes and space options →](#specifications)[Connectivity **Carrier-neutral**Explore network providers and connections →](#connectivity)[Standards & resilience **Tier 3 aligned (not certified)**Explore standards and resilience details →](#compliance) ## About this data centre Kao Data's four-building, 71 MW campus at London Road, Harlow Kao Data's Harlow campus is on London Road, Harlow, on the site where Sir Charles Kao's work on fibre optics took place in 1966. The 15-acre campus comprises four carrier-neutral data centres that Kao Data says will support 71 MW of IT load across 150,000 sq ft of technical space when complete, powered by 100% renewable energy. KLON-01 and KLON-02 (8.8 MW each) are operational, KLON-03 (17.6 MW) is under development and KLON-04 (36 MW) is planned. Kao Data lists a 61,000 m² campus with 14,000 m² of technical space in 16 technology suites of 850 m² across the four facilities. Its colocation is Tier 3 equivalent and concurrently maintainable, OCP-Ready and NVIDIA DGX-Ready, with free-air cooled halls and an SLA-backed PUE of 1.2. Technology suites support enterprise loads of 1,100 kW or 2,200 kW, private cages are offered for deployments of about 34 racks or more, and individual quarter, half and full racks from 1 to 20 kW are provided with retail partner ServerChoice at KLON-01, in hot-aisle containment. Generators run on HVO fuel and the architecture is rated BREEAM Excellent. Kao Data says its technology suites are monitored 24/7/365 and that an operations team provides ticketed 24/7 remote hands support. ### Services & suitable workloads - Colocation - Remote hands - AI and HPC - Total floor space: 150,000 sq ft ### Rack options Published rack formats and availabilityRack formatConfiguration & compatibilityReported availability**Quarter rack**Quarter racks at 1 to 20 kW via retail partner ServerChoice, housed at KLON-01. Available**Half rack**Half racks at 1 to 20 kW via ServerChoice at KLON-01. Available**Full rack**Full racks at 1 to 20 kW via ServerChoice at KLON-01. Available**Private cage**Private caged areas for mid-sized deployments of about 34 racks or more. Available**Private suite**Technology suites of 4,500 or 9,000 sq ft supporting 1,100 kW or 2,200 kW. Available Kao Data offers technology suites for 1,100 kW or 2,200 kW loads, private cages for about 34+ racks, and quarter, half and full racks at 1 to 20 kW via ServerChoice at KLON-01. ### Technical specifications - Aisle containment: Hot aisle - KLON-01: 8.8 MW, operational - KLON-02: 8.8 MW, operational - KLON-03: 17.6 MW, under development - KLON-04: 36 MW, planned - Campus size: 15 acres (61,000 m²) - Technical space: 14,000 m² in 16 x 850 m² technology suites - PUE: SLA-backed 1.2 ### Power infrastructure - Total facility capacity: 71 MW - Generator backup: Yes ### Cooling systems - Cooling type: Free-air cooling - Aisle containment: Hot aisle Kao Data lists 71 MW of IT load at completion, technology suites of 1,100 kW or 2,200 kW, racks from 1 to 20 kW, 100% renewable energy and HVO-fuelled generators. ### Sustainability Kao Data says the campus runs on 100% renewable energy, generators use HVO fuel, the architecture is BREEAM Excellent and PUE is SLA-backed at 1.2. - Carrier neutral: Yes Carrier-neutral campus with a diverse range of on-net connectivity specialists and cloud on-ramp providers. ### Physical security - Biometric access - CCTV ### Monitoring systems - 24/7 monitoring Kao Data says its technology suites are monitored 24/7/365; private cages can add dedicated biometric locks and CCTV. Tier designation**Tier 3 aligned (not certified)** ### Operator’s tier statement Kao Data describes its colocation as Tier 3 equivalent and concurrently maintainable. No Uptime Institute certification is cited. Kao Data Campus, London Road, Harlow, East of England, CM17 9NA[Get directions ↗ (opens in a new tab)](https://www.google.com/maps/dir/?api=1&destination=Kao%20Data%20Campus%2C%20London%20Road%2C%20Harlow%2C%20East%20of%20England%2C%20CM17%209NA)### Site access Kao Data lists M11 Junction 7 about 5 minutes away, London Liverpool Street about 30 minutes by train, Stansted Airport about 20 minutes and Heathrow about 50 minutes. ### Travel & local connections #### M11 Junction 7 About 5 minutes (Kao Data). #### London Liverpool Street About 30 minutes by train (Kao Data). #### London Stansted Airport About 20 minutes (Kao Data). #### London Heathrow Airport About 50 minutes (Kao Data). ## Frequently asked questions ### Where is Kao Data Harlow? Kao Data lists the campus at Kao Data Campus, London Road, Harlow CM17 9NA, about 5 minutes from M11 Junction 7. ### How many data centres are on the campus? Four: KLON-01 and KLON-02 (8.8 MW each, operational), KLON-03 (17.6 MW, under development) and KLON-04 (36 MW, planned). ### How much capacity will the campus have? Kao Data says 71 MW of IT load across 150,000 sq ft of technical space when fully complete. ### Can I rent a single rack at Kao Data Harlow? Yes. Kao Data offers quarter, half and full racks at 1 to 20 kW through its retail partner ServerChoice, housed at KLON-01. ### Is the campus suitable for AI and HPC? Kao Data describes the campus as OCP-Ready and NVIDIA DGX-Ready, with customisable infrastructure for high-density GPU workloads. ## About this listing These details help you assess the listing. Confirm current availability and suitability with the operator. - Status: Information supplied - Last reviewed: Not yet reviewed ## Does Kao Data Harlow Campus fit your plans? Our free, independent enquiry service helps you confirm pricing, availability and the requirements that matter to your deployment. No obligation to proceed. [Ask about pricing & availability ↗](/enquire?facility=4588)Add to compare