Source
https://www.rewiring.nz/electrification-guides/home-batteries — original source (opens in a new tab; the file is not redistributed)
Rewiring Aotearoa — Home Batteries (electrification guide)
The Rewiring primary behind CR_008's $700–1,300/kWh range — and a clear "batteries aren't ROI-positive yet" design signal
Rewiring Aotearoa’s consumer “Home batteries” guide — the NZ-specific source for the $700–1,300/kWh installed-cost range the model carries via the CR_008 synthesis, plus an explicit statement that a home battery is not a clear financial investment on standard tariffs (value comes from self-consumption, resilience and emissions). Advocacy/guide, no date → data_quality: medium.
Summary
Rewiring Aotearoa’s electrification guide for home batteries — the primary behind CR_008’s NZD $700–1,300/kWh installed-cost framing, and the source of the “batteries aren’t a clear call yet” economic position. For Neobiome it (a) closes the provenance on the lower battery-cost bound and (b) gives a clear NZ design signal that home-battery economics depend on tariff structure and non-financial motives, not arbitrage ROI — alongside the MySolarQuotes primary (URL_010).
Key claims
- claim: "NZ home-battery installed cost range $700–$1,300/kWh; example systems 5 kWh $6,000–$7,500 and 15 kWh $14,000–$18,000; ~$250/yr savings when paired with solar (~$3,750 over 15 years). Payback not explicitly stated for batteries."
source_location: "Cost & savings sections"
- claim: "Batteries 'aren't a clear call just yet' on return on investment (unlike solar, 'a slam dunk for most homes today'); they make economic sense only under high time-of-use tariffs, dedicated battery plans (e.g. Octopus Energy), or wholesale-market plans — or when motivated by emissions reduction and resilience rather than ROI alone. Sizing heuristic: size to cover energy consumption during peak grid times (eg. 5–9pm), allow for future electrification, smaller batteries in sunny climates and larger in cooler regions."
source_location: "Economic viability + Sizing guidance sections"Neobiome Intelligence relevance
The second NZ primary behind the model’s battery capex range — it sources the **700–1,300/kWh** lower-to-mid framing in [[cr_008_nz-battery-storage-cost-2024-2025|CR_008]], bracketing the actual MySolarQuotes figures (937.50–1,333/kWh; URL_010). Its more important contribution is a design signal: home-battery ROI is marginal on standard tariffs, so the battery’s value in the model legitimately comes from self-consumption and resilience, not arbitrage — consistent with the model treating injection revenue as a minor stream (REG_005) and self-consumption as the economic driver (CR_011). The sizing heuristic — size to cover the 5–9 pm peak — maps directly to the engine’s evening_peak slice and the battery-dispatch logic. ⚠ It is an advocacy guide with range (not surveyed) figures and no publication date — corroborating, not a measurement. Resolves RT_092.
Research targets
Research gaps
- RT_092 (RESOLVED → this page): the Rewiring primary behind the $700–1,300/kWh range is now held and captured; it pairs with URL_010 as the two NZ residential battery-cost primaries underpinning CR_008.
Connections
Links to
Referenced by
Sources (1): CR_022
EDT domains (1): D01: Renewable Energy & Storage Systems