Magnum M77. Built once. 25 years of power.
Meet the power monster — MAGNUM: the world's leading horizontal wind turbine generator for homes, vessels, and off-grid sites. Trusted at the Arctic Discovery Research Centres, on California's finest homes, and aboard Maersk and MSC fleet ships.
This purchase includes the Magnum generator only. Charge controller and blade set sold separately.
Power & Performance
- Peak output: 12 kW in strong winds (22+ m/s)
- Rated output: 3.8 kW at 15 m/s sustained wind
- Generates from: 6 m/s wind speed
- Daily energy yield: 3–28 kWh per day depending on site
- Annual yield: 2,800–10,500 kWh depending on average wind
In stock
Made to Order — Built Specifically for You
Add-Ons for Enhanced Experience
Inside the Magnum — Industrial-Grade Engineering
The motor inside Magnum is genuinely 15 kW continuous-rated — 50% more capacity than typical 10 kW competitors. This headroom protects the generator from gusts and dramatically extends service life.
- 12-pole, 36-slot, 3-phase distributed stator winding — fractional-slot configuration for minimal cogging torque and sinusoidal voltage output
- 90 wires per stator slot — 2 parallel strands × 45 turns of 0.70 mm Class 200°C enamelled copper (IEC 60317-13 GR 2), the insulation grade used in industrial servomotors and EV drivetrains, CE / UL certified
- Parallel-strand bundling doubles current capacity and distributes heat across multiple thin conductors — motor runs cold even at sustained full load
- 4 kg of pure copper total winding mass — exceptional thermal reservoir
- 24-magnet rotor with NdFeB N42 super magnets — bread-shape (~60×25×5 mm, nickel-coated), 180 cm³ total magnet volume
- Skewed magnet mounting — reduces cogging torque by ~80%, smoother torque curve and longer bearing life
- Silicon-steel laminated stator core — 240 individual 0.5 mm electrical-steel sheets stacked to 12 cm total height, ~16 cm outer diameter. Transformer/motor-grade construction that minimises eddy current losses (versus cheap cast-iron cores that overheat)
- ±0.05 mm precision tolerances across all machined components
- 2.35 m rotor diameter with aerodynamically optimized carbon fibre composite blades — 4.34 m² swept area
- Adjustable voltage limit (0–400 V max) — when paired with a TESUP charge controller (sold separately), set via MyTESUP mobile app or potentiometer; auto-brakes the turbine in overvoltage conditions (storm protection)
- Generator dimensions: stator Ø16 cm × 12 cm height (2.4 L); 24 magnets at 60×25×5 mm = 180 cm³ total
How power is calculated
Available wind power follows P = ½ × ρ × A × V³ × Cp × η. Wind speed (V) is cubed — small increases produce dramatic output gains. Magnum's carbon-fibre blade aerodynamics reach Cp 0.45 in good wind. Combined with 95% electrical efficiency from the parallel-strand premium copper winding and bigger 60×25×5 mm magnets, Magnum extracts ~43% of available wind energy as electricity — at the top of the small horizontal-axis class.
Magnum Power Curve (2.35 m rotor)
| Wind speed | Power output | Visual | Note |
|---|---|---|---|
| 22 m/s | 12 kW | peak (storm) | |
| 20 m/s | 9.0 kW | ||
| 18 m/s | 6.6 kW | ||
| 15 m/s | 3.8 kW | rated | |
| 12 m/s | 2.0 kW | ||
| 10 m/s | 1.1 kW | ||
| 8 m/s | 580 W | ||
| 6 m/s | 245 W | starts generating |
Designed and manufactured in Europe
TESUP operates in the United Kingdom and 37 other countries — the world's leading household wind turbine and solar panel manufacturer. Our European production facilities make over 270 components in-house, from generators and electronic cards to carbon fibre blades, silicon-steel stator laminations, and mounting hardware. Magnum is built once, then operates for 25+ years. Stock-dependent delivery from one day to four months.
See the Magnum in action
TESUP Magnum generating 6–7 kW even at low wind speed.
Explore The Book By TESUP, to access our product manuals, delve into our values and mission and discover how we're shaping the future with renewable energy.
From Our Factories
Every TESUP turbine is tested before it ships. Browse our most recent quality checks.
Boxing Images
See how each TESUP turbine is packed and boxed before it ships. Browse our most recent dispatches.
Product Features
The world's most powerful household horizontal wind turbine
TESUP Magnum generates 12 kW of power standalone, capable of meeting daily household electric needs.
Durable and Resistant to Weather Conditions
The corrosion-resistant carbon fiber body is capable of operating at extremely cold temperatures, down to -50°C.
Rotation at Low Wind Speed
Rotation starts at a wind speed as low as 3 m/s, and from there, it continues spinning smoothly and effortlessly thanks to its large wind-catching surface area.
Easy and Quick Installation
The product can be installed in just around 40 minutes. Watch how to do it by clicking the link.
Double the Power
It can also be combined with TESUP solar panels for optimal energy production.
Sell to the Grid
The electricity generated by Magnum can also be sold to the grid by using an inverter.
1 Year Warranty
The product comes with a 2-year TESUP Care Product Warranty, providing peace of mind and ensuring that your investment is protected.
How to Use
Please keep in mind that the wind turbine needs to be installed following the user manual which can be found in “The Book by TESUP”and under ideal weather conditions to reach its maximum power generation potential.
This product is compatible with connection to the electrical board at various output power settings. However, it may only be connected to a power socket after the necessary adjustments in accordance with country-specific regulations have been made.
Grid connection and the right inverter
A grid-tie inverter feeds the energy your Magnum generates into your home and sells the surplus to the grid — using every kilowatt as it is produced, more efficiently than batteries. For wind, choose a non-MPPT, wind-rated inverter: solar-style MPPT can over-load the rotor and stall it, while a non-MPPT inverter lets the blades spin freely across changing wind speeds.
Engineered from 400+ parts — and why the right setup matters
A flexible solar panel is essentially four bonded layers — an ETFE front, EVA, the cells and a backsheet, all of which TESUP also manufactures. A wind turbine is a different order of engineering: a TESUP turbine is built from over 400 precision parts — the blades, a custom generator with its windings and magnets, bearings, electronics and structure. That sophistication is also why the setup matters: the wrong inverter, controller or battery voltage can over-load and stall the rotor, or leave it unloaded to over-speed — both stress the machine and can damage it. Paired with a correctly specified, wind-rated (non-MPPT) inverter it runs safely for years, generating clean energy day and night, even when the sun isn't shining. Choosing wind is real action for the climate.