CR_058: NZ produce coolstore energy benchmarks — chilled fruit ~80 kWh/m³/yr (compiled synthesis)

CR_058: NZ produce coolstore energy benchmarks — chilled fruit ~80 kWh/m³/yr (compiled synthesis)

NZ produce coolstore energy benchmarks (fruit & vegetable storage)

AI-compiled, medium — but its two NZ anchors are now primary-verified

The central m³ figure (79 kWh/m³/yr) and the kiwifruit figure (0.44 kWh/TE) were each checked against the retrievable NZ primary at ingest (2026-07-25) — LIT_118 (apple/coldstore), OT_205 (kiwifruit), corroborated by LIT_119 (international SEC). Two provenance corrections are applied below (true origins named; Landcare’s own measured 0.48 kWh/TE added). The vegetable tonne-based proxy (50–75 kWh/t) rests on the Australian source VG13054, now retrieved + verified as OT_206 (Australian proxy, dq medium) — model-eligible as a proxy; RT_396 resolved. The model cites the NZ figures from the primaries, not from this page.

Summary

An AI-compiled benchmark synthesis assembling an electricity-demand planning figure for a New Zealand community-scale produce coldstore, for use as a food-storage load item in the Neobiome Intelligence energy model. Its headline recommendation is 80 kWh/m³/yr as a central planning figure for chilled / near-0 °C fruit cool storage, with a sensitivity range of 100–150 kWh/m³/yr for smaller or less-optimised stores. The central value is the synthesis’s rounding of the NZ cold-storage industry survey mean of 79 kWh/m³/yr (range 35–151) reported by Merts & Cleland (2004) and quoted verbatim by LIT_118; the 100–150 uplift is the synthesis’s own small-store adjustment, not a surveyed value.

For tonne-based estimating it offers ~105–135 kWh/t per kiwifruit coolstore storage period (its own arithmetic from the NZ kiwifruit figure of 0.38–0.49 kWh per Tray Equivalent, average 0.44, ÷ 3.6 kg/TE — OT_205) and 50–75 kWh/t for ordinary chilled vegetable refrigeration taken from Australian vegetable-farm audits (Horticulture Innovation Australia VG13054, now retrieved + verified as OT_206). International peer-reviewed cold-store SEC values from LIT_119 (chilled all-stores mean 55.7 kWh/m³/yr) corroborate that the NZ 79 mean sits inside the international chilled envelope. The synthesis is medium: its two NZ anchors are now primary-verified and its vegetable proxy is now anchored by OT_206 (Australian); only its large-industrial figures (Star Refrigeration) remain unretrieved.

Key claims

- claim: "CENTRAL PLANNING FIGURE (per-volume). The synthesis recommends 80 kWh/m³/yr as a central planning figure for chilled / near-0°C fruit cool storage, with a 100–150 kWh/m³/yr sensitivity range for smaller or less-optimised stores. The 80 is a rounding of the NZ cold-storage industry survey MEAN of 79 kWh/m³/yr (full range 35–151), for surveyed facilities of gross storage volume 9,600–93,000 m³ (mean ~34,000 m³). ⚠ PROVENANCE CORRECTION: the 35–151 / mean-79 figure ORIGINATES with Merts & Cleland (2004) 'Survey of Energy Use by the NZ Cold Storage Industry' (EECA / NZ Cold Storage Association); Frater (2011) is the retrievable HOLDER quoting it verbatim (printed p.27 / PDF p.40). Attribute as 'Merts & Cleland (2004) via Frater (2011)'. The 100–150 sensitivity uplift is the synthesis's OWN small-store adjustment (its own derivation), NOT a surveyed value. Model rule: surveyed facilities were all ≥9,600 m³, so a small community coldstore should use the UPPER part of the range / the 100–150 sensitivity, not the 79 mean. [NZ figure verified verbatim against the primary in this batch — [[lit_118_frater-2011-nz-apple-energy|LIT_118]]]"
  source_location: "cr raw — 'Recommended planning figure' section + Evidence-table row 'NZ-specific apple/cold-store benchmark'. Underlying primary: [[lit_118_frater-2011-nz-apple-energy|LIT_118]] §2.3.3 (printed p.27 / PDF p.40), quoting Merts & Cleland (2004)."
- claim: "KIWIFRUIT COOLSTORE ELECTRICITY (per-TE and derived per-tonne). NZ kiwifruit coolstore electricity 0.38–0.49 kWh per Tray Equivalent (TE), cited average 0.44 kWh/TE. ⚠ PROVENANCE CORRECTION: the 0.44 average ORIGINATES with Bollen (2009) (EECA/Zespri, six coolstore facilities) and is CITED by Landcare (p.47); Landcare's OWN Table 14 MEASURED a slightly higher 0.48±0.02 kWh/TE for Class I green 'Hayward' (three combined packhouse/coolstore facilities near Mt Maunganui / Te Puke). Both NZ datasets agree kiwifruit coolstore electricity ≈ 0.4–0.5 kWh/TE. DERIVED per-tonne (the synthesis's OWN arithmetic, NOT primary data): ÷ 3.6 kg/TE gives ≈106–136 kWh/t across 0.38–0.49 (≈122 kWh/t at the cited 0.44; ≈133 kWh/t at Landcare's measured 0.48) per long-duration near-0°C export-style storage period. [kWh/TE figures verified verbatim against the primary in this batch — [[ot_205_landcare-2011-kiwifruit-coolstore|OT_205]]; the per-tonne conversion is the synthesis's own derivation]"
  source_location: "cr raw — 'Recommended planning figure' + Evidence-table row 'NZ-specific kiwifruit'. Underlying primary: [[ot_205_landcare-2011-kiwifruit-coolstore|OT_205]] (Bollen-2009 cited value p.47; Landcare's own measured 0.48±0.02 Table 14)."
- claim: "VEGETABLE TONNE-BASED PROXY — NOW HELD as [[ot_206_ausveg-vg13054-veg-farm-energy|OT_206]] (Australian proxy). The synthesis proposes 50–75 kWh/t per storage/handling period for ordinary chilled vegetable refrigeration (optimistic-to-average). VG13054 detail, now verified verbatim against the retrieved primary (OT_206): average 62 kWh/t for coolstores, good performance <50 kWh/t, average refrigeration 72 kWh/t, coolstore space 39–294 kWh/m³. SOURCE = Horticulture Innovation Australia VG13054 (Cumming, 2015), retrieved 2026-07-25 and verified. ⚠ AUSTRALIAN PROXY (data_quality medium): no NZ vegetable-coolstore electricity figure exists, so it enters as an order-of-magnitude proxy, cited from OT_206 — not from this synthesis page. RT_396 RESOLVED → OT_206. [retrieved + verified as OT_206; Australian proxy]"
  source_location: "cr raw — 'Recommended planning figure' (tonne-based) + Evidence-table row 'International proxy — Australia vegetable farms'. Cited URL: ausveg.com.au VG13054 Final Report (retrieved + verified as OT_206)."
- claim: "INTERNATIONAL COLD-STORE SEC BENCHMARK (held via Evans, corroborates the NZ mean). Evans et al. (2015): chilled all-stores mean 55.7 kWh/m³/yr (full range 4.4–250.4), frozen/mixed mean 71.5 (range 6.0–391.6); trimmed 20%–80% ranges 31.3–70.6 (chilled) and 40.0–93.0 (frozen/mixed); model temperatures chilled 2°C / frozen −23°C; the paper notes 60–70% of a cold store's electricity may be refrigeration. A broader survey of 26–379 kWh/m³/yr (mixed NZ cold-storage industry, chilled/frozen/mixed not separated) is Evans citing Werner et al. (2006). Also cited within Evans: Duiven & Binard (2002) estimate of 30–50 kWh/m³/yr for general cold stores. These place the NZ 79 kWh/m³/yr mean inside the international chilled envelope (below the 250.4 ceiling, above the 55.7 chilled mean — consistent with near-0°C long-duration fruit storage). [held via the retrieved international primary — [[lit_119_evans-2015-cold-store-sec|LIT_119]]]"
  source_location: "cr raw — Evidence-table rows 'International proxy — IIR/European peer-reviewed', 'NZ-specific broader cold-store survey' (Evans citing Werner 2006), and 'International proxy — IIR estimate' (Duiven & Binard 2002). Underlying primary: [[lit_119_evans-2015-cold-store-sec|LIT_119]]."
- claim: "LEADS, ONE DECLARED NEGATIVE, AND THE PHYSICAL CAVEATS. (a) LARGE-INDUSTRIAL LEAD (not community-scale, not held): Star Refrigeration / Pearson (2019) quotes 10 kWh/m³/yr for a 100,000 m³ refrigeration system, <5 kWh/m³/yr at 500,000 m³, ~30 kWh/m³/yr older best-practice — these are economies of scale far above a community store's size and must NOT be used to size one; source not retrieved. (b) DECLARED NEGATIVE (useful): the EECA 'Packhouse & Cool Stores Energy Efficiency Checklist' (Oct 2024) publishes NO kWh/m³/yr benchmark — it recommends calculating energy per kg of produce over 12 months; so no NZ regulator-published intensity number exists (as of Oct 2024). (c) PHYSICAL CAVEATS the synthesis states and the model must honour: small stores have HIGHER kWh/m³ than large warehouses (surface-area-to-volume, door openings, fan heat, infiltration, part-load compressor operation); product turnover / pull-down load matters (holding pre-cooled produce uses far less than repeatedly cooling warm harvest loads); temperature regime matters (months-long near-0°C ≠ short 2–8°C mixed veg); and energy boundaries (compressor-only vs refrigeration-system vs whole packhouse/coolstore) must not be mixed without adjustment. [leads + negative + caveats — not model figures]"
  source_location: "cr raw — Evidence-table rows 'International proxy — modern large industrial stores' (Star Refrigeration) and 'NZ EECA guidance' (checklist, no benchmark); 'Caveats' section."

Neobiome Intelligence relevance

Sizes the produce cold-storage electricity load for a community food system — the refrigeration demand a community’s generation + storage (D01) must serve, arising from a food-storage function (D02 explicitly lists cold storage). It is a demand-side load item; feeds d01_renewable_energy_storage, alongside the EECA demand datasets RD_007 / OT_028 / RD_008.

• What the model may use now (NZ, primary-verified at ingest): the 79 kWh/m³/yr apple/coldstore mean (Merts & Cleland 2004 via LIT_118) as the central per-volume basis — but, for a small community store, the synthesis’s own 100–150 kWh/m³/yr small-store sensitivity, because surveyed facilities were all ≥9,600 m³; and the kiwifruit 0.4–0.5 kWh/TE band (OT_205) for long-duration near-0°C storage. Every one of these is cited from its primary, not from this compiled page.
• What the model may NOT use: the Star Refrigeration large-industrial figures (un-retrieved, wrong scale — a lead). (The 50–75 kWh/t vegetable proxy is now held as OT_206, usable as an Australian proxy.)
• Cross-check: LIT_119 places the NZ mean inside the international chilled cold-store SEC envelope, and the refrigeration-share note (60–70% of store electricity) is the boundary adjustment the model needs when mixing whole-store vs refrigeration-only figures.

Complements the sibling dairy-shed electrical loads as another cold-chain / food-storage demand item. See D02 (cold storage) and D01 (the load the microgrid serves).

Underlying sources

Compiled-research page — anchored by three retrievable primaries (each with its own verified page):

• LIT_118 — Frater (2011) Energy in NZ apple production (Massey PhD): holds the 79 kWh/m³/yr (35–151) anchor, quoting Merts & Cleland (2004). True origin Merts & Cleland (2004); Frater is the retrievable holder.
• OT_205 — Hume & Coelho / Landcare (2011) kiwifruit water-footprint report: holds 0.44 kWh/TE cited (Bollen 2009) and 0.48±0.02 kWh/TE measured (Table 14).
• LIT_119 — Evans et al. (2015) cold-store SEC (IIR ICR2015): holds the international chilled/frozen SEC envelope and the 60–70% refrigeration-share note; itself cites Werner et al. (2006) and Duiven & Binard (2002).

Cited within the synthesis, now retrieved: Horticulture Innovation Australia VG13054 (2015) veg-farm audits → OT_206 (the 50–75 kWh/t veg proxy). Still NOT retrieved (leads, not held): Star Refrigeration / Pearson (2019) large-industrial best-practice; the EECA Packhouse & Coolstores Checklist (Oct 2024, publishes no benchmark — a declared negative).

Retrieval provenance

• Upstream sources: the synthesis carries inline URLs to its own primaries — Frater/Merts & Cleland (mro.massey.ac.nz), Landcare/Bollen kiwifruit (lcanz.org.nz), Evans et al. (cold.org.gr), plus VG13054 (ausveg.com.au — retrieved as OT_206), the un-retrieved Star Refrigeration (star-ref.co.uk) and the EECA checklist (eeca.govt.nz). The retrievable NZ + international primaries were retrieved and are listed in underlying_sources:.
• Prepared by: an AI-compiled benchmark synthesis for the Neobiome project on 2026-07-25 (the date it was present in the project’s intake at ingest). ⚠ The specific tool and the exact prompt were not recorded and are not inferred here.
• Verification — mixed, unusually strong for a cr_: the two NZ per-volume / per-TE anchors (79 kWh/m³/yr; 0.44 & 0.48 kWh/TE) and the international SEC envelope were independently retrieved and grep-verified against their primaries at ingest, and two provenance corrections were applied (Merts & Cleland as the 79 origin; Bollen as the 0.44 origin + Landcare’s own 0.48 measured). The Star Refrigeration large-industrial figures were NOT verified (primary not retrieved) and remain an AI-extracted lead; the vegetable proxy (VG13054) has since been retrieved + verified as OT_206. Only figures whose primary was retrieved-and-confirmed are model-eligible, and they are cited from those primaries — not from this page.

Notes

• Two provenance corrections applied at ingest. (1) The 79 kWh/m³/yr figure is Merts & Cleland (2004), quoted by Frater — the synthesis wrote “Frater’s thesis quotes Merts & Cleland” but then attributed the number to Frater; the true origin is now named. (2) The synthesis presented 0.44 kWh/TE as Landcare’s kiwifruit figure; it is in fact Bollen (2009) cited by Landcare, and Landcare’s own measured value is higher at 0.48±0.02 kWh/TE — both are now recorded, and the per-tonne derivation is given at both 0.44 (≈122 kWh/t) and 0.48 (≈133 kWh/t).
• Present the tonne figures as the synthesis’s own derivations. The kiwifruit per-tonne (≈106–136 kWh/t) is the synthesis’s arithmetic (kWh/TE ÷ 3.6 kg/TE), not a primary datum; the vegetable 50–75 kWh/t is the synthesis’s read of an un-retrieved Australian audit. Neither is a NZ-measured per-tonne coolstore figure.
• Small-store calibration is the main modelling caveat. The surveyed NZ facilities behind the 79 mean were 9,600–93,000 m³; a community produce coldstore is far smaller, where surface-to-volume, door openings and part-load push kWh/m³ up — hence the synthesis’s 100–150 sensitivity is the appropriate planning band for community scale, not the 79 mean.
• Declared negative worth keeping: as of Oct 2024 the EECA packhouse/coolstore checklist publishes no kWh/m³ intensity benchmark (it recommends per-kg-over-12-months), so there is no NZ regulator-published number to anchor on — the NZ anchor is the Merts & Cleland / Frater survey.

Research targets

Documents to retrieve

• RT_396 — Horticulture Innovation Australia VG13054 (2015) Economic evaluation of farm energy audits and benchmarking of energy use on vegetable farms (John Cumming / Infotech Research). Retrieve to verify the 50–75 kWh/t chilled-vegetable coolstore proxy (and the 62 kWh/t avg / <50 good / 72 kWh/t refrigeration / 39–294 kWh/m³ detail). This is the single model-relevant figure on this page with no retrieved anchor and no NZ substitute — the vegetable leg of the produce cold-storage load. Australian proxy; a NZ vegetable-coolstore electricity figure would be preferable if one can be found. Cited URL: ausveg.com.au VG13054 Final Report.

Research gaps (recorded here, no RT)

• Star Refrigeration / Pearson (2019) large-industrial cold-store best-practice (10 / <5 / ~30 kWh/m³) — un-retrieved and wrong-scale for a community store; a lead only, not worth an RT unless the model ever needs a large-shared-store variant.
• Merts & Cleland (2004) underlying survey — the 79 kWh/m³/yr origin is already verified verbatim via Frater; open an RT only if the model needs the survey’s per-facility distribution rather than the mean/range.
• A NZ vegetable-coolstore electricity figure — none is held; VG13054 (Australian) is the only proxy. Folded into the RT above rather than opened separately.

Connections

Links to

Sources (7): LIT_118 · LIT_119 · OT_028 · OT_205 · OT_206 · RD_007 · RD_008

EDT domains (2): D01: Renewable Energy & Storage Systems · D02: Smart Food Systems & Agriculture

Referenced by

Sources (2): OT_206 · OT_209

EDT domains (1): D01: Renewable Energy & Storage Systems