Humber Freeport ECA mechanics
The Humber Freeport (designated October 2023) covers tax sites at: King George Dock (HU9), Saltend Chemicals Park (HU12), Goole (DN14). Within designated tax sites, 100% Enhanced Capital Allowance is available on qualifying plant and machinery in addition to standard 100% AIA. For a qualifying £2m solar + battery project: £500k year-one tax shield at 25% corporation tax — bringing net cash payback under 3.5 years for high-consumption operations.
Northern Powergrid G99 — Hull and East Yorkshire
Northern Powergrid covers HU, DN, YO, and LS postcodes. G99 study: 30-45 working days (fast by UK standards). Connection offer: typically 4-6 months from application. Northern Powergrid has been proactive on substation upgrades along the M62 and A63 industrial corridors. We submit G99 immediately after structural survey and have current Northern Powergrid capacity data for key substations.
Hull logistics and industrial estate overview
Priory Park (HU4 — Amazon, DPD, Hermes last-mile hub); Hedon Road industrial (HU9 — warehousing and distribution belt); King George Dock bonded warehousing and customs facilities; Brough industrial (HU15 — BAE Systems Brough aerostructures, automotive supply chain); Wilton Park Hessle (HU13 — mixed logistics and trade counter). Typical system size: 250 kW – 2 MW. Self-consumption logistics: 74-82%. Payback: 4-5 years (3-4 years Freeport ECA).
Saltend chemicals and process industry
Saltend Chemicals Park (HU12) hosts BP, Vivergo Fuels, Smith & Nephew, and INEOS upstream. Energy-intensive process sites here are IETF-eligible (30-50%) and sit within the Humber Freeport tax site. Combined IETF + ECA for qualifying process solar delivers exceptional economics. Self-consumption: 88-96% continuous process. Typical capex with incentives: effectively 50-70% of headline install cost.
Common questions
Do all Hull and Humber warehouses qualify for Freeport ECA?
No — only assets located within the designated Humber Freeport tax sites (King George Dock HU9, Saltend HU12, Goole DN14) qualify for ECA. Warehouses in Priory Park, Hedon Road industrial, and Brough do not qualify for ECA but do benefit from standard 100% AIA on the first £1m of capex and 50% FYA above £1m. We confirm ECA eligibility at desk feasibility.
How does Northern Powergrid G99 compare to SSEN or WPD?
Northern Powergrid is among the faster UK DNOs: G99 study 30-45 working days (vs SSEN 45-65 days), connection offer 4-6 months (vs SSEN 6-10 months). This matters significantly for large projects — faster G99 means faster first-year generation and earlier ROI. We have current Northern Powergrid capacity data for Hull and East Yorkshire substations.