Silent. Mobile. Off-grid power for New Zealand.
Solar power trailers designed and built in New Zealand for farms, residential builds, roading and civil work, festivals and events, and off-grid lifestyle. NZTA Class TB light trailers, supplied with a current WoF and an electrical Certificate of Compliance. Built to order.
Ordering: Built to order — build time is 30 days (Solo), 40 days (Crew) or 55 days (Command) from order confirmation. Every tier is available on a trailer or on skids. Prices are NZD ex-GST; 15% GST is added on a configured build and a 40% deposit confirms the build. Register your interest for a quote; no deposit required to enquire. Email: power@solartrailer.co.nz
Why solar, not diesel
Modern NZ council noise overlays push diesel generators out of residential-adjacent civil work, festivals near homes, and many dairy operations. Solar Trailer Co units run silently, on no fuel, and sit inside council noise limits where diesel cannot. Battery storage covers roughly 1.5–2 days of typical site load with zero solar input (actual runtime depends on your daily load and conditions). Read the 5-year TCO comparison.
Three tiers
Tier 01 · Solo
From NZ$19,123
ex-GST on a trailer — or from NZ$15,223 ex-GST on skids. Compact / single axle. For one operator — off-grid lifestyle, small builds, mobile services, surveyors. Specs & FAQ →
- Mount: 2.4 m trailer — or skids (static, lower cost)
- Solar: 1.43 kW (3 × 475 W) → 2.85 kW
- Battery: 5 kWh LiFePO₄ → 10 kWh
- Inverter: 6 kW · Switchboard: 16 A
- Cargo bay: not available on Solo
- Build time: 30 days · trailer option tows on a standard Class 1 (car) licence
Tier 02 · Crew
From NZ$30,186
ex-GST on a trailer — or from NZ$23,686 ex-GST on skids. Tandem / flagship. For small teams — mid construction, mid festivals, dairy support, vineyards. The workhorse of the rental fleet. Specs & FAQ →
- Mount: 3.4 m trailer — or skids (static, lower cost)
- Solar: 2.85 kW (6 × 475 W) → 5.7 kW
- Battery: 10 kWh LiFePO₄ → 20 kWh
- Inverter: 6 kW → 12 kW · Switchboard: 16 A / 32 A
- Cargo bay: optional enclosed 2 m × 2 m
- Build time: 40 days
Tier 03 · Command
From NZ$53,742
ex-GST on a trailer — or from NZ$42,042 ex-GST on skids. Tandem braked / premium. For major construction, multi-day festivals, film unit base camps, marae and civil-defence response. Specs & FAQ →
- Mount: 4.8 m trailer — or skids (static, lower cost)
- Solar: 5.7 kW (12 × 475 W) → 11.4 kW
- Battery: 20 kWh LiFePO₄ → 50 kWh
- Inverter: 6 kW → 24 kW · Switchboard: 16 A / 32 A
- Cargo bay: optional enclosed 2.4 m × 2 m
- Build time: 55 days
Indicative "from" pricing in NZD ex-GST, subject to final build specification. Every tier is available on a trailer or on skids (static, lower cost). Exact pricing comes from the configurator; 15% GST is added on a configured build.
Modules
Five optional modules are planned to extend any tier into a purpose-built deployment; availability is confirmed as each is released. An enclosed cargo bay is a separate optional extra — 2 m × 2 m on Crew, 2.4 m × 2 m on Command, and not available on Solo.
Irrigation pump
1.5 kW marine-grade pump, self-cleaning 200 µm filter, 100 m layflat hose. Pulls from creek, tank or bore — can run through the day on solar in good conditions (runtime depends on load, sunlight and battery size).
Espresso & hospitality
Twin-group commercial machine, 22 L water + grey-water capture, fold-out 1.4 m bar bench, dual grinders, under-counter chiller. High-volume espresso service — up to ~600 coffees a day in good conditions (actual output depends on sunlight, load and battery size).
PA & lighting rig
8 kW PA, 24× DMX LED pars, 2× moving heads, FOH desk, 100 m armoured cable. Flight-cased and stage-ready.
Tool & charging
6× Milwaukee/DeWalt/Makita fast chargers, 4× 240 V outlets, lockable tool wall, overnight battery rotation.
Insulated chiller
Chest + chiller for catering and field crews. Pairs with hospitality and dairy use cases.
Where they work
Five customer segments. Illustrative NZ deployment examples. Full use-case breakdown →
Dairy & beef farms
Illustrative: a Tier 1 with comms replacing a diesel backup could save on the order of NZ$4,000/yr in fuel — depends on runtime and fuel price. Lifestyle block: a Tier 1 covering shed lighting, pumps and hand tools through the day (runtime depends on load and sunlight).
Residential builds
Example scenarios: an architect's home build (T1 + tool kit); a two-stage subdivision powered before mains.
Roading & civil
Long-term T2/T3 hire. Example uses: bridge-piling power; multi-month cycleway lighting. Sits inside council noise limits where diesel cannot.
Festivals & events
Example uses: multi-trailer supply for a large festival; stage power; power for a city New Year's Eve event. Read the festival playbook →
Off-grid lifestyle
Bach, lifestyle block, remote cabin. Silent solar with roughly 1.5–2 days of zero-sun battery storage (actual runtime depends on load).
Compliance
Our solar systems are installed onto purpose-built trailers that are supplied engineered and road-legal — NZTA Class TB light trailers (GVM under 3,500 kg) with a current Warrant of Fitness (WoF) at the time of delivery. The solar, battery, inverter and 230 V electrical systems are installed by EWRB-registered electricians and independently inspected by a Licensed Electrical Inspector, with a Certificate of Compliance issued for every unit. All tiers tow on a standard Class 1 (car) licence, provided your combined vehicle-plus-trailer weight (GCM) stays within your licence limit (6,000 kg on a full Class 1) — check your tow vehicle against the trailer's weight before towing.
FAQ
- When do trailers actually ship?
- Trailers are built to order. Build time from order confirmation is 30 days for a Solo, 40 days for a Crew and 55 days for a Command.
- How do I order?
- Register your interest or request a quote and we'll confirm your build slot, specification and pricing directly. No deposit is required to enquire.
- Will it run my site?
- Tier 02 covers a typical 8-house residential build, mid-size festival, or dairy support. Use the calculator with your real fuel spend and load profile to size the right tier. Read the dairy sizing guide →
- Bad weather?
- Every tier ships with battery storage sized for roughly 1.5–2 days of typical site load with zero solar input — actual runtime depends on your daily load. Hybrid LPG module rental available for multi-week winter deployments, or pair two trailers.
- Road-legal? Who certifies it?
- Yes — supplied as NZTA Class TB light trailers with a current WoF; electrical systems installed by EWRB-registered electricians and independently inspected by a Licensed Electrical Inspector, with a Certificate of Compliance issued. All tiers tow on a standard Class 1 (car) licence — check your combined vehicle + trailer weight (GCM) stays within your licence limit.
- White-label / fleet supply?
- Yes — for hire businesses, civil-defence buyers, corporate sustainability programs. Email power@solartrailer.co.nz.
How to order
Built to order — register your interest or request a quote and we'll confirm your build slot, specification and pricing. Build time is 30 days (Solo), 40 days (Crew) or 55 days (Command) from order confirmation, on a trailer or on skids. Prices are NZD ex-GST; 15% GST is added on a configured build, quotes are valid 30 days, and a 40% deposit confirms the build. No deposit required to enquire. Pickup from our NZ workshop is free; shipping is quoted separately by delivery address. Email us with your tier preference and load profile.
The Solar Trailer Co — Silent, mobile, off-grid power. Built in New Zealand. Email power@solartrailer.co.nz. NZTA Class TB light trailer · current WoF · electrical Certificate of Compliance.