BFT Professional Generator
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3300W / 230VELECTRIC START -
4000W / 230VELECTRIC START -
5500W / 230VELECTRIC START -
8000W / 230VELECTRIC START -
8kW 400V / 7kW 230VELECTRIC START
BFT Professional Generators: Up to 18 Hours Without Refueling
Long-running gasoline generators from Genergy: 3,300 W to 10 kVA, with a 14- to 27-liter tank and the S version as standard. For events, food trucks, night shifts, irrigation, and rental.
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3300W / 230VELECTRIC START
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4000W / 230VELECTRIC START
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5500W / 230VELECTRIC START
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8000W / 230VELECTRIC START
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8kW 400V / 7kW 230VELECTRIC START
What is the product line? BFT and who it's for
BFT means Big Fuel Tank: These are professional-grade generators with large fuel tanks, designed to run all day—or all night—without anyone having to stop to refuel them.
Five models ranging from 3,300 W to 10 kVA with tanks of 14 and 27 liters, up to 18 hours straight at 25% capacity (Urkiola-S), and all in S version: 30 mA residual current protection, IP67 connectors, and manual start—all required by public works projects and rental companies. Same mechanical design as the Professional line (motor Euro V, copper alternator, regulation SVR, wheels, and integrated handles), with up to five times the battery life. Una boda de ocho horas, un food truck de mañana a noche, un turno nocturno o un riego: lo que no puede parar.
- Up to 6 p.m. withoutrefueling, at 25% charge
- 14–27 Ltank capacity (compared to 2.6–6 L in the Professional model)
- 3,300 W – 10 kVAC; five models, 230 and 400 V
- S30mA version· IP67 · standard across the entire product line
- Genergy Warranty: 1 year for businesses · 3 years for residential customers · Technical Support in Spain
How many hours does it last? The actual calculation
Runtime isn't just a number in a brochure: it depends on how much you ask of it. Here's how to calculate it, so you can compare any generator on the market.
At a quarter of its capacity—which is typical for an event with lights, music, and coolers coming and going—a 27-liter Urkiola-S consumes 1.5 L/h: 18 hours. The 8,000-watt models require more (2.3 L/h with the same tank), so they last 11.5 hours. A standard “Profesional” model with the same power rating and a 6-liter tank lasts between 3 and 4 hours. Here are the three runtime figures for each model, without rounding:
| Model | Power | Deposit | 25% charge | 50% charge | 75% charge | Noise at 7 m | Who is it for? |
|---|---|---|---|---|---|---|---|
| Masella-S | 3.300 W | 14 L | 17,5 h | 14 h | 10 h | 64–73 dB | Watering, lighting for a booth or small tent |
| Belagua-S | 4.000 W | 14 L | 14 h | 9,3 h | 7 h | 66–73 dB | Night shift, remote job, flea market |
| Urkiola-S | 5.500 W | 27 L | 18 h | 15 h | 11,5 h | 67–74 dB | Weddings, food trucks, fair |
| Angliru-S | 8.000 W | 27 L | 11,5 h | 9 h | 7 h | 72–79 dB | Large event, rental |
| Ancares-S | 8 kW (10 kVA) a 400 V · 7 kW a 230 V | 27 L | 11,5 h | 9 h | 7 h | 72–79 dB | Three-phase power for events (air conditioning, kitchen) |
Official Catalog Information Genergy 2026 (pp. 36–37). A generator should operate at between 40% and 80% of its rated load to perform well and last, so the 50% column most closely resembles demanding real-world use.
What do you need it for?
Every situation calls for a specific power setting and number of hours. Find the one that's right for you.
Ceremony, cocktail reception, banquet, and dance
Decorative lighting, sound system, a bar with refrigerators and a coffee maker, and sometimes climate control in the tent. Eight to ten hours, and no one can come to refuel in the middle of the waltz. Urkiola-S 5,500 W (27 L, 18 h at 25%) or Angliru-S 8,000 W if there’s a kitchen or climate control, lasting 11.5 h.
From opening to closing, nonstop
An iron, two refrigerators, a coffee maker, lighting, and a POS terminal use around 4,000–6,000 W, with occasional spikes. The Urkiola-S 5,500 W model covers a full day’s use; the Angliru-S 8,000 W model is sufficient if you’re using a deep fryer or air conditioner. A 3,000 W model isn’t enough when the refrigerator starts up while the iron is on.
Various positions, full-time
Lighting, beverage coolers, POS terminals, and small equipment for three or four stations. Belagua-S 4,000 W (14 h) or Urkiola-S 5,500 W (18 h), depending on how many stations are connected to the same generator.
Stage, Sound, and Lighting
A 2–3 kW sound system, plus lighting and backline. Angliru-S 8,000 W; for air conditioning or various three-phase stages, Ancares-S 10 kVA. Both operate at around 72–79 dB, so if the audience is less than 20 m away, consider silent inverters.
Lighting, cameras, and on-location catering
Twelve-hour shifts with equipment that can’t be turned off. Angliru-S 8,000 W; keep in mind that at 11.5 hours at 25% capacity, a twelve-hour shift requires a recharge break or a second unit. Place it away from the set and run a cable to it.
Work done at night or work you won't return to until tomorrow
Lighting and power tools all night long, or sump pumps that must continue to run. Belagua-S 4,000 W (14 h) or Urkiola-S 5,500 W (18 h). Standard S version for public works.
Water all night without going to the farm
Irrigation or transfer pump that runs for hours. Masella-S 3,300 W (17.5 h) or Belagua-S 4,000 W (14 h), both with a 14-liter capacity: start it at dusk and it keeps running until dawn. For three-phase pumps, Ancares-S.
Major surgeries and procedures
When a power outage lasts a day rather than just a few hours: control stations, area lighting, heaters. Angliru-S 8,000 W with 27 L. 30 mA ground fault circuit interrupter and IP67 rating as standard.
"All-day" deliveries
The generator your customers don't return because they ran out of gas. Standard S version (30 mA, IP67, manual with no battery), 27 liters. Angliru-S or Ancares-S. The entire fleet-ready line of generators for rental companies (S versions).
Why BFT
14- and 27-liter tanks
That's the whole point of this line: 11.5 to 18 hours at 25% load, depending on the model. The same power as the Professional model, with up to five times the battery life.
Standard S Version
30 mA residual current protection, IP67 outlets, and manual reset on all five models. Meets public works and rental requirements without needing to request it separately, and without the battery draining between uses.
Ancares-S: 400 V for the event
8 kW (10 kVA) at 400 V and 7 kW at 230 V, for industrial kitchens, tent cooling, or three-phase stage equipment.
SVR and copper alternator
Regulation SVR It absorbs power surges from refrigerators, irons, and motors without voltage drops; the 100% copper alternator withstands hours of continuous operation.
He moves around the construction site or the grounds
Built-in wheels and handles, cable clips for extension cords. Just place it where it won't get in the way and run the cord.
Motor Euro V
Lower emissions and energy consumption: At an outdoor event, what it smells like matters just as much as what it sounds like.
Gasoline, diesel, or a portable fuel station for an event?
People often say that “range is a diesel thing.” It depends on the hours of operation and the power output. Here’s how to decide:
| BFT (gasoline, long range) | Diesel generator set | Portable Power Station | |
|---|---|---|---|
| Hours | 11.5–18 hours on a single charge; rechargeable | Days; large deposits | 2–10 hours, depending on the battery; it needs to be recharged |
| Power | 3.300 W – 10 kVA | 10 – 358 kVA | Up to ~3,000 W |
| Noise | 64–79 dB at 7 m: far from the audience | Soundproofed, 60–70 dB | Complete silence |
| Weight and Shipping | Wheels, fits in a van | Trailer or truck | By hand |
| Choose… | A one-day event, food truck, fair, shift: capacity and hours at the lowest cost | Multi-day festivals, large stages, continuous use — see generators | Soft sounds, electronic music, and complete silence among the audience — see portable stations |
Complete Guide: Diesel or Gasoline Generator—Which One to Choose Based on Use and Operating Hours.
How to Set Up a Generator at an Event
Six things that make the generator stand out for what it does, not for the annoyance it causes.
Where to put it
15–20 meters away from the audience, behind the tent or a hedge, with the exhaust facing outward. For the 64–74 dB models, that’s enough; with Angliru-S or Ancares-S (72–79 dB): It is best to move it a little farther away or use a sound barrier.
Refuelling: only when the engine is cold
Never while the machine is running or hot. That's why you need a large fuel tank: so you don't have to refuel in the middle of the event. If the event lasts longer than the fuel tank's capacity, plan for a break or have a second generator on hand.
Cables and Protective Coverings
Extension cords of the appropriate gauge, as short as possible, hung from cable hooks. Standard 30-mA ground-fault circuit interrupter (S version). A distribution panel to supply power to multiple workstations.
It really adds up in terms of power
Add up everything that will be running at the same time, plus 25% for peak loads (refrigerators and irons draw two to three times their normal power when they start up). Turn on the appliances one at a time.
Noise and Permits
Check the municipal ordinance if the event is in the city center; if the audience will be right next to the equipment, a quiet inverter (52–61 dB) will prevent problems.
Redundancy if it is critical
At a wedding or on a film set, there are no second takes: for essential items (sound, emergency lighting), keep a second small generator or a portable power station on hand as a backup.
¿BFT, Professional or Silent Inverter?
| Professional BFT | Professional | Silent Inverter Generator | |
|---|---|---|---|
| Designed for | Days and nights without refueling | Back and forth in the van | Silence Among the Audience, Electronic Music |
| Fuel Tank / Range | 14–27 L · 11,5–18 h | 2,6–6 L · 3–4 h | Depending on the model |
| Noise at 7 m | 64–79 dB | 64–74 dB | 52–71 dB |
| S Version | Standard | Opcional | — |
| Choose… | If the generator stays on site all day | If you work by the hour and travel — see "Professional" | If noise is your top priority — see Inverter Silent |
More than 10 kVA or 400 V with heavy-duty motors? The Big Series, with a 50-liter capacity and up to 21 hours of runtime.
The lineup BFT on video
Professional Line BFT from Genergy
Professional Line BFT from Genergy
Professional Line BFT from Genergy
Professional Line BFT from Genergy
Professional Line BFT from Genergy
Professional Line BFT from Genergy
Professional Line BFT from Genergy
Professional Line BFT from Genergy
Professional Line BFT from Genergy
Professional Line BFT from Genergy
Urkiola-S 5,500 W during operation
Official videos from the channel Genergy. The video for the product line has a version for each language (es, en, fr, pt, de, it, ua, pl, ru, ar), and the version for the language you are currently browsing in is displayed. The other videos are available only in Spanish.
Why Buy Your Long-Running Generator at Genergy
- ✓Spanish brandDesign, development, and quality control of Genergy, with its own technical team.
- ✓Genergy Warranty: 1 year for businesses and 3 years for individuals.
- ✓SAT and Replacement Parts in Spain: Technical Service and Genuine Parts—The Generator Is Back in Action.
- ✓We'll help you figure it out.Just tell us what you're going to plug in and for how many hours, and we'll tell you the model and tank size.
Frequently Asked Questions About Generators for Events and Long Runtime
How many hours does a generator last? BFT Without refueling?
How much power do I need for an event?
What about a food truck?
Are they quiet so they can be placed near the audience?
Gasoline or diesel for an event?
Is it suitable for weddings at country estates and festivals?
¿Se puede repostar en marcha?
Why do all the BFT Are they the S version?
Can it power three-phase equipment?
How much does it weigh, and how does it move?
Can I rent it?
How much does a BFT And what kind of warranty does it come with?
Learn more on the blog
How much fuel does a gasoline-powered generator consume?
Liters per hour based on load: the basis for calculating your hours.
ComparisonDiesel or gasoline generator, depending on usage and operating hours
When is a BFT and when the generator kicks in.
PowerWhat can I plug into a 3,000-watt generator?
Team by team, with their starting peaks.
Service lifeHow long does an electric generator last?
Real-Life Hours and How to Make Them Last Longer.
MaintenanceWhat kind of oil does a gasoline-powered generator use?
With 18 hours per tank, when should you check it?
SilenceWhat Is an Inverter Generator?
For when the audience is nearby.
Looking for other product lines? Go back to gasoline generators.
Don't know what BFT What do you need for your event?
Tell us what you'll be plugging in, how many hours, and how far away the audience will be, and we'll let you know the model and the actual runtime you'll get. Warranty Genergy and after-sales service in Spain.
