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Commercial Solar Finance UK · Independent
Sector finance angle

Warehousing & Logistics

Vast roof areas and flat 24/7 demand profiles with strong cold-storage and EV-charging integration potential.

Typical size

500kWp – 5MWp

Typical capex

£400k – £3.5m

Self-consumption

Highly variable

Payback

4

Why this sector

Warehousing and logistics presents the largest commercial roof areas in the UK and therefore the largest physical solar capacity per site. The economic case varies more than any other sector because demand profiles vary so much. A modern ambient warehouse running lighting, conveyor, and forklift charging may pull 50–200 kW peak — far less than the 500kWp+ of capacity the roof can hold. A cold-storage facility running compressors 24/7 may pull 800–1500 kW — fully absorbing even a megawatt of solar. EV-integrated logistics hubs are an emerging case: depot charging fleets of HGVs and vans creates significant daytime demand that solar covers economically. Where self-consumption is below 60%, two strategic options open up: PPA structure (where the developer's economics work harder on export) or strategic battery storage (which time-shifts midday surplus to evening and overnight charging). For property-owning REITs with mixed-use logistics portfolios, we typically recommend a blend: capital purchase on owner-occupied buildings, PPA on tenanted multi-let estates, and selective battery deployment where charging integration justifies it.

Electricity profile

Variable by operation: ambient warehousing has modest electricity demand dominated by lighting and material handling; cold storage has heavy 24/7 baseload from refrigeration; logistics hubs with EV fleet charging have growing daytime demand. Self-consumption ranges from 50% (ambient warehouse with limited demand) to 95%+ (cold storage and EV-integrated logistics).

Tax position

Logistics operators typically corporation-tax-paying and able to use FYA. Property-owning logistics REITs and investment vehicles have more complex tax positions and may prefer PPA or operating lease structures, where the FYA is captured by the developer and reflected in lower energy costs.

Sector-specific funding

No sector-specific grants. UK Infrastructure Bank funding available for very large logistics decarbonisation projects (>£10m). Some local authority commercial decarbonisation grants for warehouses in specific zones.

Worked example

Regional distribution centre, M1 corridor. 45,000m² composite roof with 1.2MWp PV and integrated 80-bay HGV electric depot charging.

Capex

£1,050,000 PV + £620,000 depot charging

Year-one saving

£245,000 year-one (combined PV self-consumption and avoided wholesale on charging)

Payback

5.1 years on PV alone; 4.6 years combined PV+charging

Finance structure

Capital purchase from operating cash. FYA + AIA fully utilised.

Pitfalls to watch

  • Tenant/landlord split — many logistics buildings are leased; aligning landlord capital with tenant electricity benefit requires careful structuring
  • Roof load assessments more onerous on lightweight cladding common in modern logistics sheds
  • DNO export limits frequently bite at multi-MW scale — design against zero-export or limited-export from the outset
  • Battery storage and EV charging materially shift the economics — worth modelling integrated solution
  • Triple-net leases may not capture electricity savings for the landlord — PPA may be the only viable structure

Recommended finance structures

Capital Purchase

Indefinite — system life of 25–30 years

Green Loans

7–15 years; commonly 10 years

Power Purchase Agreement (PPA)

15–25 years; commonly 20 years

Other sectors

Manufacturing

Daytime-heavy electricity profiles, large industrial roofs, and strong demand for capital …

Agriculture

Farm building rooftops, ground-mount potential, and high agricultural electricity demand f…

Schools

PSDS funding routinely covers 75–100% of capital cost, making solar a near-zero-investment…

NHS

PSDS-eligible 24/7 estates with substantial roof area and continuous electricity demand ma…
Sector × Finance deep dive

Detailed finance route for this sector

Warehousing × PPA

Mega-warehouse rooftop solar with customer ESG procurement.

Frequently asked questions

How big can a warehouse solar system be?
Mega-warehouse rooftops (typically 30,000m²+) support 1-2 MWp solar arrays. The binding constraint is usually DNO export capacity rather than roof area — large warehouse arrays often face G99 reinforcement studies above 500 kWp with potential network upgrade costs. Typical UK warehouse projects land 500 kWp-1.5 MWp.
What's the typical warehouse solar ROI?
For continuous-operation warehouses (cold storage, 24/7 distribution), 14-18% post-tax IRR with strong self-consumption (75-90%). Single-shift warehouses 11-14% IRR. PPA-funded warehouse solar delivers 8-12% IRR but with zero capex risk. Customer-side ESG procurement uplift sometimes adds 2-4 percentage points to project economics for retailer-supplier warehouses.
Do landlord-tenant arrangements complicate warehouse solar?
Yes — but UK PPA structures handle the landlord-tenant split well. Standard arrangement: landlord provides roof access via lease provision, PPA developer installs and owns the system, tenant becomes the electricity offtaker. Landlord receives ground rent from PPA developer. We negotiate landlord-tenant solar provisions on every advisory engagement involving leased warehouses.
Can warehouses combine solar with battery storage?
Yes — increasingly common on large warehouses. Battery storage adds value where: DNO export is constrained (battery absorbs surplus rather than curtailing), time-of-use tariff structure exposes the operation to peak/off-peak spreads, capacity market revenue is accessible (typically 1 MWh+ scale). Combined solar + battery often delivers 1-3 percentage points additional IRR vs solar alone for qualifying sites.
How does warehouse solar interact with EV charging deployment?
Strongly. Warehouses deploying EV charging for fleet electrification find solar a natural complement — generation profile aligns with daytime fleet vehicle return-to-base charging. Combined solar + EV charging often qualifies for additional grant routes and tax allowances. Some 3PL operators are bundling solar + EV + battery as integrated decarbonisation infrastructure.

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