Why cold storage solar self-consumption is 90%+
Cold storage refrigeration — compressors, condensers, evaporators, blast freezers — runs 24 hours a day, 365 days a year. A typical 50,000 sqft cold store has 400-800 kW of continuous refrigeration load. A 500 kW PV system generating peak daytime output is almost entirely absorbed by the refrigeration system. Self-consumption ratio 90-95% is typical, versus 72-81% for distribution centres. The difference translates directly to financial return: each percentage point of self-consumption improvement converts SEG export at roughly 4–12p/kWh (as at July 2026) into avoided grid import at 21-25p/kWh.
IETF grants (fund closed July 2025) for cold chain operators
IETF Phase 3 provided (until the fund closed in July 2025) capital grants of 30-50% of eligible project cost for energy efficiency in energy-intensive industries. Cold chain and food processing operators are explicitly eligible. Eligibility: UK-based industrial facility, energy spend typically >5% of turnover, measurable energy reduction, minimum project £100k, maximum £10m. For a £1.5m cold storage solar install at 35% IETF (closed July 2025): £525k grant + £375k AIA tax shield = £900k effective year-one public funding. Net effective capex: £600k. After-tax payback approximately 2.5-3 years. Timeline: 12-18 months from EOI to grant payment. The IETF closed in July 2025 with no successor fund announced — there is no live IETF application route.
Insurer pre-design review for cold storage
Cold storage buildings carry high consequential loss exposure (product loss from refrigeration failure, cross-contamination risk). Insurance market requirements for solar PV on cold stores: (1) Insurer pre-design review before installation commences — confirm mounting, fire separation, and sprinkler clearance compliance. (2) LPC sprinkler clearances (1m to deflector, 0.6m at high-bay spray heads) respected in all PV layout. (3) Ammonia refrigeration buildings require specialist insurer review (additional requirements for NH3 plant proximity). Insurer pre-design review should be standard scope on all cold store projects.
F-gas refrigeration retrofit synergy
F-gas Regulation 2014/517 is driving refrigeration plant retrofits across the UK cold chain — HFCs must be replaced or recycled. F-gas refrigeration retrofits and solar PV projects are natural co-investments: (1) Combined capital mobilisation reduces contractor preliminaries; (2) F-gas retrofit may require new electrical infrastructure that solar PV also benefits from; (3) New efficient refrigeration plant (CO2 transcritical, NH3, HFOs) has slightly different load profile — factoring into self-consumption model for accurate PV sizing. Combined F-gas + solar projects are increasingly common at cold chain sites across the UK.
Cold storage solar by sector and temperature regime
Grocery cold chain (chilled 0-4°C, frozen -18°C to -25°C): 92-95% self-consumption. Payback 4-4.5 years. Operators: Wincanton, Lineage Logistics, CEVA Cold, NFT, Culina. Pharmaceutical cold chain (2-8°C controlled): 88-92% self-consumption. Often owner-occupied. Payback 4.5-5 years. Blast freeze food processing (-40°C): 93-97% self-consumption. IETF-eligible (fund closed July 2025). Payback 3.5-4.5 years. Fish processing and seafood (Grimsby, Hull, Scotland): 94-97% self-consumption. IETF highly eligible. Ice cream and frozen desserts: 93-96% self-consumption.
Common questions
What IETF intervention rate can my cold store expect?
Typical IETF (closed July 2025) rates: 30% for medium-sized operators, 40-50% for larger energy-intensive facilities. For a £1.5m install at 35%: £525k grant. We assess IETF eligibility (fund closed July 2025) at desk feasibility stage — no obligation to continue to application if eligibility is uncertain.
Can solar be installed on an ammonia refrigeration cold store?
Yes. NH3 refrigeration is electrically driven — ideal solar match. Insurer pre-design review is essential and has additional requirements for NH3 plant proximity. Specialist cold store insurer review should be standard on NH3 sites.
What self-consumption should we model for a blast-freeze facility?
93-97% typical. Blast freezers are extremely high-load (often 300-800 kW per cell). The combination of continuous blast freeze operation plus ambient refrigeration and building HVAC absorbs all daytime solar generation with minimal export. Model conservatively at 92% to account for seasonal variation.