Every Data Centre Has an Expiration Date
Data centres are not permanent infrastructure. Facilities have useful lives of 15-25 years before power distribution, cooling systems, and structural elements require replacement that may exceed the cost of new construction. The hyperscale build cycle of the 2010s means thousands of facilities will reach end-of-life by the mid-2030s. Decommissioning is an inevitability that is rarely planned for until the costs are imminent.
Proper decommissioning involves four distinct workstreams: data destruction, equipment removal, environmental remediation, and building disposition. Cutting corners on any of these creates legal, financial, and reputational risk.
Phase 1: Planning and Assessment (3-6 Months Before Shutdown)
**Inventory and documentation:** - Complete asset inventory: every rack, server, switch, PDU, UPS module, generator, chiller, and cable run - Categorise assets by disposition: reuse (transfer to another facility), resale, recycle, or destroy - Document all hazardous materials: diesel fuel (generators), battery acid (UPS), refrigerants (cooling), and any legacy materials (asbestos, lead, PCBs in older facilities) - Review all lease obligations, utility contracts, and vendor agreements for termination provisions and timelines
**Stakeholder notification:** - Tenants (colocation): Minimum 12-18 months' notice per lease terms. Assist with migration planning. - Utility provider: Notice period per interconnection agreement (typically 6-12 months). Confirm process for disconnection and meter removal. - Local authorities: Building department notification, environmental agency notification if applicable - Insurance carriers: Adjust coverage for decommissioning period and confirm coverage during asset removal
**Cost estimation:** Decommissioning costs for a 10 MW facility typically range from $2-8 million, depending on: - Equipment volume and type - Hazardous material remediation requirements - Labour market conditions - Distance to recycling and disposal facilities - Salvage value offsets
Phase 2: Data Destruction
Data destruction is the highest-liability phase. A single unwiped drive containing customer data that surfaces after decommissioning can result in regulatory fines, litigation, and reputational damage exceeding the entire cost of decommissioning.
**Destruction methods:** - **Cryptographic erasure:** Destroy encryption keys rendering encrypted data unrecoverable. Fastest method. Requires verified encryption was in place. - **NIST 800-88 compliant overwrite:** Software-based multi-pass overwrite of all storage media. Time-consuming but leaves hardware intact for resale. - **Degaussing:** Electromagnetic erasure of magnetic media (HDDs, tapes). Destroys the drive's ability to function. Not effective on SSDs. - **Physical destruction:** Shredding, crushing, or incineration. The only method providing absolute certainty. Required for classified/government data.
**Documentation requirements:** - Certificate of destruction for every storage device, including serial number, method, date, and responsible party - Chain of custody documentation from rack to destruction facility - Video documentation of destruction process (required by some compliance frameworks) - Third-party verification for regulated data (HIPAA, PCI DSS, government)
**Cost:** $5-15 per drive for degaussing/wiping; $8-25 per drive for physical destruction with certification. A 10 MW facility may contain 50,000-200,000 storage devices.
Phase 3: Equipment Removal and Asset Recovery
**IT equipment (servers, storage, networking):** - Equipment under 3 years old: Resale value of 15-40% of original purchase price - Equipment 3-5 years old: Resale value of 5-15% of original purchase price - Equipment over 5 years old: Minimal resale value; recycling value only ($50-200/server for precious metal recovery) - Secondary market brokers: IT Asset Disposition (ITAD) firms handle resale, data destruction, and recycling for a fee (15-25% of recovery value)
**Electrical equipment:** - Generators: High resale value ($200-500/kW for units with low hours). 2-3 MW generators in good condition sell for $300,000-800,000. - UPS systems: Moderate resale value if under 10 years old. Battery replacement cost often exceeds resale value for older units. - Transformers: Low resale value due to transportation cost and PCB testing requirements. Scrap copper and steel have commodity value. - Switchgear and PDUs: Modest resale market for recent-vintage, name-brand equipment.
**Mechanical equipment:** - Chillers: Resale value depends on age, refrigerant type, and condition. R-22 chillers have zero resale value (refrigerant phase-out). - Cooling towers: Minimal resale value; typically scrapped. - Raised floor tiles and pedestals: Active resale market ($5-15/tile for aluminium panels in good condition).
**Cabling:** - Copper cabling: Commodity value at $2.50-4.00/lb for bare copper. A large facility may contain 50,000-200,000 lbs of copper. - Fibre cabling: No recycling value; disposal only. - Cable tray: Scrap steel or aluminium value.
**Net recovery estimate (10 MW facility, 8 years old):** - IT equipment resale: $500K-2M - Generator resale: $500K-1.5M - Copper and scrap metal: $200K-600K - Raised floor and misc: $50K-200K - **Total recovery: $1.25M-4.3M** (offsetting 30-60% of decommissioning costs)
Phase 4: Environmental Compliance
**Diesel fuel (generator tanks):** - Underground storage tanks (USTs): Removal required, with soil testing. Remediation costs if contamination detected: $50K-500K+. - Above-ground storage tanks: Drain, clean, and remove. Fuel disposal: $2-4/gallon. - Spill containment area: Clean and inspect for contamination.
**Batteries (UPS systems):** - Lead-acid (VRLA): Classified as hazardous waste. Must be recycled through licensed facilities. Transportation under DOT hazardous materials regulations. - Lithium-ion: Emerging recycling market but still classified as hazardous in many jurisdictions. Fire risk during removal requires specialised handling. - Recycling value: Lead-acid batteries have positive scrap value ($0.20-0.40/lb). Lithium-ion recycling is at or near break-even.
**Refrigerants:** - Recovery required under Clean Air Act Section 608. Venting refrigerants is a federal crime (fines up to $44,539 per day per violation). - Recovery by EPA-certified technicians only - R-22 (if present): High recovery value due to scarcity ($30-80/lb) - R-410A, R-134a: Standard recovery and reclamation
**Asbestos, lead, PCBs (older facilities):** - Buildings constructed before 1980 require asbestos survey before demolition - Transformers manufactured before 1979 may contain PCB-contaminated oil (testing required) - Remediation costs: $100K-1M+ depending on extent
Phase 5: Building Disposition
**Options after equipment removal:** - **Repurpose as data centre:** Sell the shell to another operator. Powered shells with secured utility connections have significant value ($3-5M/MW for shell only). - **Convert to other use:** Warehouse, distribution centre, light manufacturing. Conversion costs are moderate if the building is structurally standard. - **Demolish:** If the building has no adaptive reuse value or environmental constraints prevent reuse. Demolition cost: $5-15/sq ft. - **Lease return:** If the data centre occupied leased space, restore to lease-specified condition. Review lease for restoration obligations — they can be substantial.
Planning Ahead
Decommissioning should be budgeted at the time of facility development or lease signing, not when the end-of-life date is imminent. A reasonable reserve is 3-5% of original facility cost, set aside over the facility's useful life.
Evaluate facility age, condition, and market positioning using our Score Tool and facility directory. For decommissioning planning or end-of-life advisory, contact our team.