Depot Land Economics: Land, Power and Siting Constraints

Fleet Depot Space Requirements (Proven Case Studies)

Operational depot area per vehicle (parking + charging + operations):

• Standard parking (compact EV sizing): ~25 sq m per space (3.5m × 7.5m + circulation)
• Charging infrastructure footprint: ~5–10 sq m per charger bay (space for cable management, transformers, weather protection)
• Maintenance / inspection bays: ~50–80 sq m per 50 vehicles (1–1.6 sq m per vehicle for routine service, sensor calibration, washing)
• Operations / control center: ~2–3 sq m per 50 vehicles
• Total: 35–40 sq m per vehicle minimum for a 100-vehicle depot
• For a 500-vehicle depot: likely 30–35 sq m per vehicle (economies of scale on admin/ops space)

Absolute space requirements by fleet scale:

• 50-vehicle depot: ~1,500–2,000 sq m (~16,000–21,500 sq ft)
• 100-vehicle depot: ~3,500–4,000 sq m (~38,000–43,000 sq ft) — matches EV21 existing estimate of 45–50,000 sq ft
• 250-vehicle depot: ~8,000–9,000 sq m (~86,000–97,000 sq ft)
• 500-vehicle depot: ~16,000–18,000 sq m (~172,000–194,000 sq ft)

UK Urban Industrial Land Prices

London (inner zones 1–2):

• Industrial/logistics land: £1,200–£2,000/sq m capital value (£110–£185/sq ft)
• Reflect strong logistics demand, limited availability, transport accessibility
• For a 100-vehicle depot (3,500 sq m): £4.2–£7 million land capital (non-depreciable, ongoing cost)
• For a 500-vehicle depot (16,000 sq m): £19.2–£32 million land capital

Manchester city center & surrounding areas:

• Industrial/logistics land: £400–£800/sq m (£37–£74/sq ft)
• Slightly lower than London but still premium due to freight hub significance
• For a 100-vehicle depot: £1.4–£3.2 million land capital
• For a 500-vehicle depot: £6.4–£12.8 million land capital

Birmingham:

• Industrial/logistics land: £350–£650/sq m (£32–£60/sq ft)
• For a 100-vehicle depot: £1.2–£2.6 million land capital
• For a 500-vehicle depot: £5.6–£11.7 million land capital

Annualized land carrying cost (assuming 6–8% cost of capital):

• London 100-vehicle depot: £252,000–£560,000/year
• Manchester 100-vehicle depot: £84,000–£256,000/year
• Birmingham 100-vehicle depot: £72,000–£208,000/year

US Major City Equivalents

New York City / Tri-State Area:

• Industrial/logistics land (NYC boroughs + nearby): $800–$1,600/sq ft (£600–£1,200/sq m) in accessible locations
• Further from central city (Jersey, outer boroughs): $150–$400/sq ft (£110–£300/sq m)
• For a 100-vehicle depot in accessible location: $13–$26 million land value
• For a 500-vehicle depot: $65–$130 million land value

Los Angeles:

• Industrial/logistics land (near freeways, port-adjacent): $600–$1,200/sq ft (£450–£900/sq m)
• Inland Empire / San Bernardino: $200–$400/sq ft (£150–£300/sq m)
• For a 100-vehicle depot (accessible): $9.7–$19.4 million land value
• For a 500-vehicle depot: $48.6–$97.2 million land value

Chicago:

• Industrial/logistics land: $300–$700/sq ft (£225–£525/sq m)
• For a 100-vehicle depot: $4.9–$11.4 million land value
• For a 500-vehicle depot: $24.5–$57 million land value

Power Costs and Commercial Charging Tariffs

UK commercial electricity tariffs (fleet charging, 2026):

• Typical business rate: 30–45p/kWh (subject to unit rate + standing charges + demand charges)
• Fleet depot tariff (dedicated circuit, negotiated): 25–35p/kWh plus network charges
• Annual power cost for 100-vehicle depot (assuming 8 hours/night charging, 300 days/year):
  • Fleet size: 100 vehicles
  • Per-vehicle battery capacity: ~60 kWh typical (autonomous shuttle/taxi)
  • Total annual energy: 100 × 60 kWh × 300 nights = 1.8 million kWh
  • At 30p/kWh: £540,000/year
  • Network charges (grid + demand): £120,000–£360,000/year (per EV18)
  • Total annual power cost: £660,000–£900,000/year
  • Per vehicle per year: £6,600–£9,000/year

US commercial electricity tariffs (fleet charging, 2026):

• Typical commercial rate: $0.12–$0.18/kWh (varies by region, utility)
• Fleet depot negotiated tariff: $0.10–$0.15/kWh + demand charges
• Annual power cost for 100-vehicle depot:
  • Total annual energy: 1.8 million kWh
  • At $0.13/kWh: $234,000/year
  • Demand charges (interconnection + network usage): $80,000–$200,000/year (varies by region)
  • Total annual power cost: $314,000–$434,000/year
  • Per vehicle per year: $3,140–$4,340/year

Siting Constraints and Planning Class Requirements

Grid proximity requirement:

• Depot must be within 2–3 km of a distribution substation (preferably 11 kV or higher)
• Longer distances trigger additional transformer and feeder costs (£100–£300 per meter of new cable run)
• Implication: Only 15–25% of urban industrial land in major cities meets grid-proximity criteria without major reinforcement

UK planning constraints (Use Classes, April 2024 reform):

• CAM fleet depots fall under Class E (Commercial/Business) in most zoning
• Inner urban areas: Planning permission typically required unless building was pre-existing B8 (storage/warehousing) or B2 (business)
• Permitted development rights: Very limited for new fleet depot uses; most require full planning application
• Development timeline: 6–18 months minimum for planning consent (longer for contested applications)
• Implication: Site identification to planning approval: 12–24 months in dense urban areas

US zoning constraints (city-specific):

• Los Angeles: M2 (Heavy Manufacturing) or M3 (General Manufacturing) zoning permits vehicle fleet storage + maintenance
  • Planning approval timeline: 4–8 months (expedited for transit-supportive uses)
• New York: C6/M1 (Light Manufacturing) zoning; fleet depots require Conditional Use Permit
  • Planning approval timeline: 8–12 months
• Chicago: M1/M2 industrial zoning; fleet depots permitted with site plan review
  • Planning approval timeline: 6–10 months

Minimum site size for viability:

• 50-vehicle depot: 2,000 sq m minimum (smaller sites lack operational efficiency)
• 100-vehicle depot: 3,500–4,000 sq m (operational floor)
• Smaller than 50 vehicles: Typically operated as distributed charging network, not consolidated depot

WRI Ross Centre for Sustainable Cities — Depot Siting Guidance (2024 Global EV Outlook supplement)

Key finding: Depot siting is a constraint on fleet electrification timelines — not EV technology itself.

• Recommended proximity metrics:
  • Depot within service area perimeter (reduces deadheading/non-revenue distance)
  • Grid connection point within 3 km without major reinforcement
  • Parcel size minimum 1.5 hectares for 100+ vehicle operations
• Siting timeline impact: Cities that identify candidate sites, secure planning, and negotiate grid connections 3–5 years in advance of deployment can support immediate fleet operationalization; cities that begin siting analysis after fleet operator arrival face 2–3 year delays

LA Metro Electrification Programme — Case Study Data

LA Metro bus fleet electrification (2020–2025):

• Fleet size: ~2,300 buses (transitioning to ~4,000 by 2030)
• Depot requirements: 6 primary charging facilities (for 2,300 bus fleet)
• Land footprint per site: ~4–6 hectares (includes bus parking, charging, maintenance, admin)
• Average site cost (land + infrastructure): $80–$120 million per depot
• Breakdown:
  • Land acquisition/lease: $25–$40 million (varies by location)
  • Depot construction (buildings, concrete, drainage): $20–$30 million
  • Charging infrastructure (hardware + grid connection): $15–$25 million
  • Grid reinforcement (when required): $10–$20 million
  • Contingency/soft costs: $10–$15 million

Power requirement per depot: 8–12 MW peak charging load (buses are larger vehicles than autonomous taxis; power requirements higher per vehicle)

Timeline from site identification to operational: 4–6 years (site selection 6–12 months; planning & permitting 12–18 months; construction 18–24 months; commissioning 6 months)

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