Source
https://www.eeca.govt.nz/insights/eeca-insights/understanding-the-potential-of-two-way-ev-chargers/ — original source (opens in a new tab; the file is not redistributed)
EECA — Two-way EV charging (V2G/V2H/V2B) + approved-charger list
The NZ-govt primary for D27 vehicle-to-home (RT_287)
EECA’s two-way EV charging programme page + the EV smart-charger approved list. Establishes that two-way (V2G/V2H/V2B) charging is emerging and not yet widely available in NZ, the Queenstown trial scale, and the one approved two-way charger. Two pages captured via curl; the load-bearing facts grep-confirmed in raw HTML. Cost and fleet-share are NOT published — see NI relevance for the estimates.
Summary
EECA’s authoritative NZ position on two-way EV charging (vehicle-to-grid / vehicle-to-home / vehicle-to-building) as of 2026: the technology is emerging, not yet widely available, and being tested in a Queenstown trial (with Rewiring Aotearoa) scaling to 30–40 chargers during 2026. EECA’s approved charger list now contains its first two-way model (StarCharge). This is the NZ primary behind the model’s D27 V2H feature — but it confirms that the two figures the model needs (installed charger cost and V2H-capable fleet share) are not yet published in NZ, so both are carried as low-confidence estimates.
Key claims
- claim: "EECA two-way EV charging trial (Queenstown): 'a trial is currently underway' installing an initial tranche of 'fewer than 10 two-way chargers', planned to expand to 'around 30-40 chargers across a mix of homes and businesses with installations to be completed during 2026', delivered in partnership with Rewiring Aotearoa via the Queenstown Electrification Accelerator (QEA). Two-way chargers with 'vehicle-to-grid, vehicle-to-home, and vehicle-to-building functionality, are emerging in the New Zealand market and are not yet widely available.'"
source_location: "EECA 'Understanding the potential of two-way EV chargers' — trial section + availability statement (curl+grep confirmed: 'fewer than 10', '30-40', 'not yet widely available', 'Rewiring Aotearoa', 'Queenstown')"
- claim: "EECA's EV smart-charger approved list includes its first two-way / bi-directional charger: StarCharge model AD20074EU1923, listed under the two-way (bi-directional) category. (No installed NZD price is published; EECA does not endorse the bi-directional V2X functionality at this stage.)"
source_location: "EECA 'Electric Vehicle Smart Charger Approved List' (curl+grep confirmed: 'StarCharge', 'AD20074EU1923', 'two-way', 'bi-directional')"Neobiome Intelligence relevance
Underpins the engine’s D27 vehicle-to-home feature — the EV fleet as a second battery (v2h, v2h_reserve_frac, ev_pack_kwh, ev_midday_availability). RT_287 needs two inputs. EECA confirms neither has a published NZ retail value, but both reconcile with IEA figures already in the corpus (OT_024), so they are estimates anchored on IEA, not free-floating:
- Bidirectional charger installed CapEx — topology-dependent. IEA (OT_024): AC bidirectional <USD 1,500 (~2-yr payback), DC bidirectional USD 5,000+ (~10-yr payback). The EECA-approved StarCharge and the Wallbox Quasar 2 (12.8 kW DC, CCS2, V2H+V2G) are DC units → NZ installed ≈ NZ
12,000–15,000** (DC hardware + registered-electrician install; corroborated by the now-dead 2022 Mitsubishi NZ ~15k Quasar quote). An AC-bidirectional V2H path is materially cheaper (~NZ3,000–5,000** installed). No NZ retail price is published yet — two-way chargers are "not yet widely available" [[url_020_eeca-two-way-ev-charging|URL_020]] — so treat as a **user-adjustable** input (DC ~12–15k / AC ~$3–5k). Confidence medium (IEA-anchored); NZ-specific low. - V2H-capable fleet share. IEA (OT_024): as of 2026 ~22 models offer V2G commercially (~1.5% of stock), ~3× more counting V2H/V2L (~4.5%) — Hyundai Ioniq 9, Kia EV9, Nissan Leaf, Mitsubishi Outlander PHEV, Renault/VW/BYD/etc. NZ-specific share is unpublished, but NZ’s large used-import Nissan Leaf fleet (CHAdeMO bidirectional, excl. early Gen 1) plus Mitsubishi PHEVs likely make the technically-V2H-capable NZ share higher than the global model-availability %; the binding blocker is carmaker software locks, and only one two-way charger is approved in NZ URL_020. Treat as low-single-digit-% of models, growing — document the model list, do not assert a precise NZ %.
Both feed the D27 scenario levers and a new charger-CapEx cost line — a model-design addition (flagged, not auto-applied), consistent with the reticulation/hydro handling. The EECA trial’s final report (late 2027) is expected to yield the first real NZ installed cost and behavioural data.
Research targets
Documents to retrieve
- None new.
Research gaps
- RT_293 — the real NZ numbers once they exist: a current NZ retail/installed bidirectional-charger price (post-Queenstown-trial retail), and a V2H-capable fleet-share figure from the EECA two-way trial’s final report (expected late 2027).
Notes
Two EECA pages captured direct via curl (energy-efficiency govt site), no AI-retrieval provenance, filed in the url_020_eeca-two-way-ev-charging/ subfolder: the two-way programme page (sha256 recorded) + the EV smart-charger approved list. All load-bearing facts (trial numbers, “not yet widely available”, StarCharge AD20074EU1923) grep-confirmed in the raw HTML. data_quality high for the EECA facts; the charger-cost (AC ~3–5k / DC ~12–15k) and fleet-share (~1.5–4.5% of models) figures are IEA-anchored (OT_024) but NZ-specific low (no published NZ retail price / NZ fleet %), flagged in-line and raised as RT_293.
Connections
Links to
Sources (1): OT_024
Referenced by
EDT domains (1): D05: Smart Mobility & Electrified Transport