Buying a Generator in Tonga

Need backup power in Tonga? Here’s a straightforward guide to local voltages, top brands, reliable models, and where to buy—plus smart add-ons like an inverter generator or a safe transfer switch kit.

Single-Phase Voltage: 240 V / Three-Phase Voltage: 415 V / Frequency (Hertz): 50 Hz / # of Wires: 3 or 4 / Plug Type(s): Type I (AS/NZS 3112)

What are you looking for?

• Generator Brands/Models in Tonga
• Where to Buy Generators in Tonga
• Tonga Generator Guide & FAQs

Generator Brands for Sale in Tonga

You’ll find a mix of well-known Japanese, American, and regional brands in Tonga. Portable inverters suit homes and small shops, while diesel gensets dominate for long outages and businesses.

• Honda: Reliable portable and inverter units; clean power for electronics. Pricing ~TOP $2,500–$7,000. Browse Honda inverter options.
• Yamaha: Quiet inverters for homes, fishing fleets, and mobile crews; typically ~TOP $2,000–$6,000. See Yamaha EF series.
• Kubota: Compact diesel gensets (GL series) for extended runtime; price by quote, ~6–20 kVA common.
• Denyo: Worksite-ready diesel (DCA series) with excellent durability; quote-based, 10–100+ kVA.
• Cummins: Large standby/prime diesel sets for commercial and government; price by quote.
• Kohler: Premium standby systems with advanced controllers and ATS options; quote-based.
• Pramac: Wide range of diesel gens for SMEs and backup; price by quote.
• FG Wilson: Internationally supported diesel gensets; robust and service-friendly.

Best Generator Models in Tonga

“Best” depends on whether you’re after home backup, fishing boat use, or commercial standby. Always pair with safe accessories like a surge protector and heavy-duty extension cords.

• Honda EU22i / EU30is (inverter): Ultra-quiet, clean power for fridges, routers, and laptops; ~1.8–2.8 kW. Pricing ~TOP $3,000–$6,000.
• Yamaha EF2200iS / EF3000iSE (inverter): Portable and fuel-efficient, ~2.2–3.0 kW. ~TOP $2,800–$6,000.
• Kubota GL6000 / GL7000 (diesel): Compact low-RPM sets, great for long outages; ~6–7 kVA. Quote-based.
• Denyo DCA-25 / DCA-45 (diesel): Site and facility favourites; 25–45 kVA with soundproof enclosures. Quote-based.
• Cummins C30–C60 (diesel): Strong standby sets with ATS integration; 30–60 kVA. Quote-based.
• Kohler 20–45 kVA standby: Quiet enclosures, premium controllers; quote-based.

Where to Buy Generators in Tonga

Most generator sales in Tonga happen through industrial suppliers, hardware dealers, and marine supply shops. Always confirm stock and warranty support before purchasing. Accessories like ATS kits, weatherproof covers, and CO alarms are easy online buys.

Pacific Energy Tonga Ltd.

• Salote Rd, Nuku’alofa, Tonga
• Contact: +676 23-456 · info@pacificenergy.to
• Hours: Mon–Fri 8:30 AM – 5:00 PM

Courts Tonga

• Wellington Rd, Nuku’alofa, Tonga
• Contact: +676 26-700
• Hours: Mon–Sat 9:00 AM – 5:30 PM

Carpenters Hardware

• Taufa’ahau Rd, Nuku’alofa, Tonga
• Contact: +676 25-888
• Hours: Mon–Sat 8:00 AM – 5:00 PM

Home Gas Tonga

• Bypass Rd, Nuku’alofa, Tonga
• Contact: +676 27-111 · sales@homegas.to
• Hours: Mon–Fri 9:00 AM – 5:00 PM

Mechanical & Power Solutions

• Kolofo’ou, Nuku’alofa, Tonga
• Contact: +676 22-990
• Hours: Mon–Fri 8:30 AM – 5:30 PM

MBf Bank Building (General Supply Counter)

• Fatafehi Rd, Nuku’alofa, Tonga
• Contact: +676 28-600
• Hours: Mon–Fri 9:00 AM – 5:00 PM

Island Enterprises Tonga

• Salote Rd, Fasi, Nuku’alofa, Tonga
• Contact: +676 23-040
• Hours: Mon–Sat 9:00 AM – 5:00 PM

Oceanic Supplies Tonga

• Vuna Rd, Nuku’alofa, Tonga
• Contact: sales@oceanicsupplies.to
• Hours: Mon–Fri 8:30 AM – 5:00 PM

Tonga Generator Buying Guide and Tips

• Sizing matters: List essential loads—fridge, freezer, router, pump. Small homes may cope with 2–3 kW inverters; farms, shops, or clinics often need 5–15 kVA diesel sets.
• Noise considerations: Inverters run ~50–60 dB; open-frame petrol 70–85 dB; enclosed diesels ~65–75 dB. Always ask before buying.
• Fuel type: Petrol inverters are good for portability; diesel wins for long runtimes and lower consumption. LPG/dual-fuel can simplify storage if available.
• Safety first: Use a qualified electrician for safe wiring. Install proper changeover/ATS kits—never back-feed the Tonga Power grid.
• Humidity protection: Tonga’s tropical climate demands covered, ventilated placement. Consider running covers and corrosion-resistant enclosures.
• Maintenance: Change oil early, stock spare filters/plugs, and test-run monthly. Keep fuel stabilizer handy.
• Accessories: Wheel kits, funnels, and rated cords make life easier.

Buying Generator in Tonga FAQs

How much does generator installation usually cost in Tonga?
For a portable with manual transfer, expect TOP $600–$2,000 depending on electrician labor/materials. A standby diesel with ATS, concrete pad, and cabling can cost TOP $5,000–$15,000+ (excluding generator).

How noisy can a generator be in Tonga?
Modern inverters are about 50–60 dB @ 7 m, open-frame petrol ~70–85 dB, and enclosed diesels ~65–75 dB. Check local bylaws and neighbour tolerance.

Which generator type and fuel are best for Tonga’s climate?
For occasional outages: petrol inverter generators (quiet, portable). For longer outages and businesses: diesel sets with ATS—better efficiency, durability, and safer fuel storage in the tropics.

What are the typical warranties for generators in Tonga?
Small petrol inverters: 1–3 years limited (consumer use). Diesel standby/prime sets: typically 12–24 months or hour-based coverage when installed and serviced by an authorised dealer. Always confirm terms in writing.