Generator for spraying mortar and concrete
A mortar-spraying generator is a high-powered portable generator set that provides a stable power supply—typically three-phase 400V—to power mortar, plaster, or concrete spraying machines at construction sites not connected to the power grid.
Genergy's "S Series" construction-grade lineup offers power ratings from 7 to 18 kW with three-phase output, IP67-rated connectors, a 30 mA ground fault circuit interrupter, and a reinforced frame: the reliable power your projector needs to operate without interruptions on any job site.
- 7–18 kWpower range
- 400 V three-phase output
- IP67-rated protected outlets
- EUROV-compliant engine
Genergy's In-House Manufacturing and After-Sales Service · 2026 Catalog
What is a mortar sprayer?
A mortar-spraying generator is a power generator designed to supply power to spraying machines (for mortar, plaster, cement, or shotcrete) in locations where there is no electrical power: a new construction site, a renovation project, or a lot without a utility connection. Since most professional spraying machines operate on 400V three-phase power and start high-demand motors, they require a powerful and highly stable power source that can withstand startup surges.
Its function is to ensure that the projector operates continuously and safely, without power drops that could shut down the machine or damage the motor. A properly sized generator (with sufficient power headroom above the projector’s power consumption) prevents interruptions, protects the equipment, and maintains the pace of work on the job site. Furthermore, since they are portable, they can be transported in a van and set up in minutes, without the need for cranes or permanent installations.
Mortar Spraying Models
All feature a 400V three-phase output and IP67 outlets from the "S Series" commercial-grade line. Filter by power rating based on your projector.
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15 kW 400 V · 3 × 5,000 W 230 VIzoard-S 15,000 W
Three-phase 400V · Electric start · IP67
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18 kW 400 V · 3 × 6,000 W 230 VStelvio-S 18,000 W
Three-phase 400V · Electric start · IP67
View details →
How much power does your projector need?
Guideline. The exact power requirement depends on your projector's motor and its peak startup power: it's best to allow for a margin. Email us with your projector model, and we'll advise you.
| Projector Type / Use | Recommended power | Genergy Models |
|---|---|---|
| Small mortar or plaster projectors | 7–8 kW (400 V) | Candanchú-S 7,000W, Formigal-S 7,000W |
| Medium-sized projectors and continuous use on construction sites | 8–9 kW (400 V) | Bentayga-S 8,000 W, Ancares-S 8,000 W, Somport-S 9,200 W |
| Demanding projectors or multiple machines | 11 kW (400 V) | Cervascán-S 11,000W |
| High demand, labor-intensive work, and a wide profit margin | 15–18 kW (400 V) | Izoard-S 15,000 W, Stelvio-S 18,000 W |
Key Features
400V three-phase output
400V three-phase power, which is required by most professional mortar and plaster sprayers.
Genuine Genergy EURO V Engine
EURO V-certified engine: easy starting, high performance, and long service life under harsh job site conditions.
IP67 Sockets
IP67-rated power outlets, water- and dust-resistant, ideal for outdoor construction sites and dusty environments.
Construction Site Safety
30 mA residual current device and emergency stop button for maximum protection during heavy-duty use.
Reinforced frame
Sturdy construction and a heavy-duty carrying case, designed to withstand the demanding conditions of everyday use on a construction site.
A Real Laptop
High power in a format that can be transported in a van, without cranes: it can be moved and installed quickly and easily.
Features, Benefits, and Integrations
Features
- Feeding mortar, plaster, and concrete into projectors on a construction site
- Supply a stable three-phase 400V power source
- Absorb the inrush current spikes from the projector's motor
- Power other construction tools at the same time (230V)
- Operate autonomously where there is no power grid
Benefits
- Continuous operation without interruptions or machine stoppages
- Protection of the projector's motor against voltage drops
- More productivity per shift and less downtime
- Complete mobility between work sites and construction projects
- Enhanced safety (30 mA residual current device, emergency stop)
Integrations
- Single-phase and three-phase mortar and plaster sprayers
- Construction mixers, pumps, and compressors
- 230V power tool connected in parallel
- Construction Lighting Towers and Floodlights
- Output: 400 V three-phase and 230 V single-phase
Power Comparison
At a glance: all models in the construction line recommended for project use.
| Model | Power: 400 V | Power: 230 V | Startup |
|---|---|---|---|
| Candanchú-S | 7 kW | 6,5 kW | Manual |
| Formigal-S | 7 kW | 6,5 kW | Electric |
| Bentayga-S | 8 kW | 7 kW | Manual |
| Ancares-S | 8 kW | 7 kW | Electric |
| Somport-S | 9,2 kW | 8,3 kW | Electric |
| Cervascán-S | 11 kW | 11 kW | Electric |
| Izoard-S | 15 kW | 3 × 5,000 W | Electric |
| Stelvio-S | 18 kW | 3 × 6,000 W | Electric |
Uses of the Projection Generator
Mortar Projection
Stable feed for mortar spraying machines used on facades and exterior walls.
Plaster Casting
Continuous power for plaster sprayers used in interior plastering.
Shotcrete
Three-phase power for shotcrete and sprayed concrete equipment.
Work Without a Service Connection
Stand-alone power supply for new construction or renovation projects where electricity is not yet available.
Renovation and Remodeling
Movement between work sites for lining and finishing work.
Equipment Rental
Rugged "S" Series equipment, designed for heavy-duty use in the rental market.
Genergy Construction Generators on Video
Genergy's “S Series” construction-grade lineup and high-power three-phase generators in action.
Why Buy Your Generator from Genergy
- ✓Manufacturer, not a reseller. Genuine Genergy engine, EURO V-certified and of our own design.
- ✓High-Power Specialists: "S Series" construction linedesigned for demanding machinery.
- ✓Total Warranty: Comprehensive coverage and direct support from the manufacturer.
- ✓In-house After-SalesService: Technical support and spare parts directly from Genergy.
- ✓Dealer Network: Retail locationsand consultation services throughout Spain.
- ✓Technical Advice: We help you select the right equipment for your projector.
Frequently Asked Questions
What kind of generator do I need for a mortar projector?
It depends on your projector's motor and its peak starting current. Most are three-phase (400V), so you'll need a generator with a 400V output and enough power to exceed the machine's power consumption. As a general guideline, small projectors usually work well with 7–8 kW, while more demanding ones require 11 kW or more. Ideally, you should allow for a margin to account for the starting current.
Why do I need a three-phase output (400V)?
Because most professional mortar, plaster, and concrete mixers operate on 400V three-phase power. That is why all the models shown here provide a three-phase output, in addition to 230V for auxiliary tools.
How much extra power should I leave?
Electric motors require a peak current when starting up that is significantly higher than their current consumption during operation. For this reason, it is advisable to use a generator with a margin (oversized) relative to the projector’s rated power, so that startup does not cause voltage drops or shutdowns.
Are they easy to transport?
Yes. Despite their high power output, they remain portable, with a reinforced frame and a carrying case, and can be transported in a van without the need for cranes or heavy lifting equipment.
What is the difference between manual and electric starting?
The electric starter is activated with a key or a button, which is more convenient for everyday use on the job site. The manual (pull-start) version usually makes the equipment more affordable. In this line, you have both options depending on the model.
Are they suitable for rental and heavy-duty use?
Yes. The "S" series is designed specifically for the rental and construction industries: it features a 30 mA ground-fault circuit interrupter, an emergency stop button, IP67-rated outlets, and a reinforced structure to withstand heavy-duty use with minimal maintenance.
The recommended wattages are approximate and depend on the specific projector model.
