Generators & Backup Power for Cold Storage
Refrigeration is an unforgiving generator load: compressor starting current, cyclic demand and long autonomy requirements break gensets that were sized on running kW alone. ColdMatch sizes the backup package against your actual plant and shortlists suppliers with service presence in your country.
Diesel and gas sets sized for compressor inrush, not just steady-state load.
Automatic transfer, load shedding and multi-set paralleling for critical stores.
Tank sizing for realistic outage duration, plus fuel-quality and refuelling logistics.
Suppliers with in-country spares, filters and response SLAs — not just a shipping quote.
Sizing for refrigeration load
We size against starting kVA, step-load acceptance and worst-case simultaneity of compressors, fans, defrost and dock equipment — then check voltage dip against the controls' tolerance so the plant does not trip on transfer.
Hybrid and solar-assisted backup
Where fuel is expensive or unreliable, a smaller genset paired with PV and battery often beats a large diesel on both CapEx and running cost. We quote both routes side by side.
Total cost of standby power
Bids are compared on fuel consumption at typical load, service interval cost, emissions compliance and expected overhaul hours — not headline price per kVA.
Buyer answers by question type
Cost, lead time, compliance, maintenance and industry fit — planning-grade answers. Final figures come from supplier quotes.
What does backup generation cost for a cold facility?
Planning band: USD 350–650/kVA for 100–500 kVA diesel gensets, USD 250–450/kVA above 1 MVA, plus 15–30% for enclosure, ATS, fuel tanks, civils and cabling. Sizing at 1.25–1.5× the refrigeration starting load avoids the most expensive mistake — an undersized set.
How long does a standby generator installation take?
Stock sets 2–6 weeks; containerised or high-kVA units 10–18 weeks. Site works — foundation, fuel system, ATS and cable runs — take 2–4 weeks, with load-bank testing and integration to the refrigeration control system in the final week. Rental units bridge the gap in 24–72 hours.
Which regulations apply to standby generators?
ISO 8528 for genset performance and rating class, ISO 3046 for engine power, local emissions limits (EU Stage V, US EPA Tier 4 where applicable), fuel-storage and bunding rules, noise limits at the boundary, and electrical safety plus earthing per IEC 60364 or local code.
How much maintenance does standby generation need?
Monthly no-load or brief on-load test runs, oil and filter service every 250–500 running hours or annually, coolant and fuel-polishing checks, battery replacement every 3–4 years, and an annual load-bank test. Untested sets are the most common failure point during real outages.
Which cold chain sites must have generator backup?
Pharma and vaccine storage under GDP, hospital and blood cold chain, seafood and meat freezers where product loss per outage exceeds the genset cost, and any site in a market with frequent load shedding. Low-value chilled storage with short outage exposure may only need thermal buffering.
Frequently asked questions
What size generator does a cold store need?
Rule of thumb: 1.3–1.8× the total running kW of the refrigeration plant to cover compressor starting current and step load. Soft starters or VFDs on compressors can reduce this materially.
Diesel or gas?
Diesel dominates where fuel logistics are simple and runtime is short. Gas suits sites with reliable pipeline supply and long runtime, with lower fuel cost and emissions but higher CapEx.
How much autonomy should I plan for?
Specify tank capacity for the realistic worst-case outage in your grid — commonly 8–12 hours in stable markets and 24–72 hours where outages are frequent.
Can backup power be combined with solar?
Yes — a PV plus battery layer covering daytime load with the genset as true backup typically cuts fuel use 40–70% for cold storage.
What are typical lead times?
Catalogue gensets under 500 kVA: 4–10 weeks. Larger or containerised, sound-attenuated and synchronised packages: 12–20 weeks, plus installation.
Ready to move?
Tell us your scope. We return qualified international suppliers with landed cost and financing options — usually within 48 hours.