How Much Does It Cost to Go Off-Grid in NZ? (2026 Guide)
Introduction
Many New Zealanders want to know the real cost to go off grid nz, especially with rising power prices and high rural connection fees. The answer depends on your home size, energy use, and setup, and whether off-grid works out cheaper depends on your site and usage. At Portable Dwellings, we supply portable homes with optional solar and battery packages, sized to your appliances, daily load and site.
Why Off Grid Homes NZ Make Sense
Getting mains power to a rural or lifestyle block can be expensive, depending on distance from existing lines, transformer work and terrain — get a quote from your local lines company to compare. Generating and storing your own power gives you more control over running costs, and a battery sized for your backup needs can help keep essentials running during an outage.
Main Costs of Going Off-Grid
The cost to go off grid nz involves three parts: your home, your solar system, and your site setup. At Portable Dwellings, we simplify this by bundling the first two, and consequently you know your total cost upfront.
Off Grid Homes NZ: Model Pricing (incl. GST)
The Cabin — from $23,500
20ft Home (~36 m²) — from $38,500
30ft Home (~54 m²) — from $51,000
40ft Home (~72 m²) — from $64,000
See all options on our Products page.
Off Grid Solar System Pricing (incl. GST)
3.5kW + 10kWh battery — from $12,499
5kW + 10kWh battery — from $14,999
Compare systems on our Off-Grid Energy Solutions.
Which system is right?
3.5kW suits a couple or bach, running lights, fridge, laptops, TV, and occasional washing. In contrast, 5kW is better for families with kitchen appliances, washing machine, heat pump, and tools. Both come with lithium battery storage; in addition, you can expand later if your usage grows.
Example Budget: 30ft Home + Solar
Here’s a worked cost to go off grid nz scenario (incl. GST, before delivery). A 30ft home from $51,000 incl. GST plus the 5kW + 10kWh solar package from $14,999 incl. GST = $65,999 incl. GST before delivery. A 40% deposit on this example is $26,399.60, with $39,599.40 due on delivery. Delivery is quoted for your exact site, and your final quote depends on model, layout, upgrades, delivery, site access and availability. Optional extras include a gable roof ($3,950–$6,500 incl. GST) and a 2m front deck ($4,000 incl. GST). See Customisations.
How Costs Compare to Staying on the Grid
Compare like for like: your lines company’s connection quote plus your expected power bills, against a solar and battery package sized to your usage (from $12,499 incl. GST) and its upkeep. The right answer depends on your site, distance from the grid and how you use power.
Off Grid ROI: Does It Pay Off?
Payback depends on your current power bills, what a grid connection would cost on your site, and the system size you need. Send us your usage and site details and we’ll size a package so you can compare the numbers yourself.
Other Costs to Plan For
Foundations, delivery, and water/waste vary by site. For example, some properties require crane placement, while others do not. See Delivery & site setup. Your local contractors handle tanks and septic, and we send the drawings and specs they need.
FAQs — Cost to Go Off Grid NZ
Do I need building consent? Council requirements vary by site and by council. Check with your local council on what’s needed for your site and send us their requirements — we’ll tell you what we can and can’t do before you commit to anything.
How long do batteries last? It depends on the battery, how it’s sized and how it’s used. We’ll include the battery specifications in your quote.
What about maintenance costs? Keep panels clean and follow the battery maker’s guidance; running costs depend on your system and site.
Can I expand later? Yes, both homes and solar systems are modular; therefore, you can start small and upgrade when needed.
Why Choose Portable Dwellings?
Proven: over 50 homes delivered nationwide. Electrical cabling carries an SDoC. Backed: 10-year after-sales support — spare parts supplied at manufacturer price. Clear pricing: homes from $23,500 incl. GST, solar packages from $12,499 incl. GST. Transit insurance included on every delivery, the whole way to site.
Call to Action
👉 Get a fixed quote (home + solar bundle) Send your site location and preferred model for a fixed quote.
