NEOBIOME

OT_077: EECA — Commercial-scale Solar in New Zealand (community/mid-scale rooftop PV ~$1,500–2,000/kWp installed)

Properties3
typesource
source_typeother
topicsenergy_generation, nz_specific

3 min read

OT_077: EECA — Commercial-scale Solar in New Zealand (community/mid-scale rooftop PV ~$1,500–2,000/kWp installed)

Source

https://www.eeca.govt.nz/insights/eeca-insights/commercial-scale-solar-in-new-zealand/ — original source (opens in a new tab; the file is not redistributed)

EECA — Commercial-scale Solar in New Zealand (community/distributed rooftop PV cost)

Resolves RT_217 — the community/distributed rooftop PV capex benchmark (firms pv_roof_cost)

The official EECA commercial-solar guidance is the authoritative NZ document for community/mid-scale rooftop PV (10–250 kWp): ~1,500–2,000/kWp installed**. The model benchmark **~1,800/kWp is derived from its commercial midpoint plus the NZ installer market; the EECA report is the cited source (data_quality high), with the installer/Rewiring corroboration noted. Fills the gap left by OT_056 (utility-scale only, explicitly excludes community rooftop).

Summary

EECA’s Commercial-scale Solar in New Zealand gives an installed cost of roughly NZ1,500–2,000/kWp** for commercial/community-scale rooftop PV (midpoint ~1,750), distinct from the utility-scale economics covered by OT_056 (which explicitly excludes community rooftop). This is the band most Neobiome deployments sit in — marae, school, papakāinga clusters, and small-commercial roofs aggregate demand onto shared roofs (10–250 kWp), placing them in the commercial band rather than the single-home residential band. Triangulating EECA’s commercial midpoint with the NZ installer market (1,400–1,800/kWp) gives a defensible **~1,800/kWp model benchmark; individual small home systems (3–10 kWp) run higher at ~$2,000–2,360/kWp. Figures are installed, incl. GST, and exclude batteries and major grid upgrades.

Key claims

- claim: "EECA 'Commercial-scale Solar in New Zealand' gives installed cost ~NZ$1,500–2,000/kWp for commercial/community-scale rooftop PV (10–250 kWp; midpoint ~$1,750), installed incl. GST, excluding batteries and grid upgrades. This is the authoritative NZ government figure for the community/distributed band — distinct from utility-scale economics (OT_056, which explicitly excludes community rooftop). Larger systems (toward 250 kWp) sit at the lower end (~$1,400–1,500/kWp)."
  source_location: "EECA — Commercial-scale Solar in New Zealand (insights + PDF)"
- claim: "Model benchmark DERIVED for community/distributed rooftop PV ≈ NZ$1,800/kWp installed (EECA commercial midpoint ~$1,750 + NZ installer market $1,400–1,800/kWp, e.g. MySolarQuotes / Rewiring Aotearoa data). Residential small-system (3–10 kWp) is higher ≈ $2,000–2,360/kWp (~$2,300 at 3 kWp; ~$1,700–2,000 at 8–10 kWp). Full spread ~$1,400/kWp (large commercial) to ~$2,360/kWp (small residential). Use ~$1,800/kWp for a SHARED community array (the Neobiome default); use ~$2,000/kWp if modelling many individual home systems. Ground-mount has no clean NZ $/kWp (proxied from rooftop, low confidence)."
  source_location: "EECA commercial midpoint; NZ installer market (MySolarQuotes, Rewiring) — corroboration"

Neobiome Intelligence relevance

Resolves RT_217 — firms pv_roof_cost. The model’s community/distributed rooftop PV capex is now anchored to an authoritative NZ source at ~1,800/kWp installed** (the shared-community-array default), with a **~2,000/kWp alternative for a many-individual-homes design. This replaces reliance on the utility-scale floor (which does not apply to community rooftop). Excludes batteries (CR_036/CR_024/int_008) and grid upgrades (handled separately — see the grid-connection cost source).

Retrieval provenance

The cited source is the EECA commercial-solar report (filed PDF, data_quality high). The $1,800/kWp model figure is a transparent derivation from its commercial midpoint plus the NZ installer market (MySolarQuotes/Rewiring corroboration) — the apportionment + installer figures are in the filed _derivation note; the AI synthesis is the method, not the cited authority.

Research targets

Research gaps

  • A clean NZ ground-mount distributed $/kWp (no good NZ source found; currently proxied from rooftop — low confidence).
  • NZ community-solar case costs (marae/school networks) tend to bundle batteries + grants, so none yields a usable standalone $/kWp — they are scale evidence, not a clean cost.

Connections

Links to

Sources (1): OT_056

Referenced by

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

Sources (1): OT_154

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