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.
In stock
Made to Order — Built Specifically for You
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.
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.
| 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 |
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.
TESUP Magnum — generating 6–7 kW even at low wind speed.
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| Average wind speed (m/s) | Estimated energy (kWh/yr) | Estimated saving / yr | Approx. payback |
|---|---|---|---|
| 4.0 | 772 | $139 | 6.3 yrs |
| 5.0 | 1,971 | $355 | 2.7 yrs |
| 6.0 | 3,788 | $682 | 1.4 yrs |
| 7.0 | 6,289 | $1,132 | 0.9 yrs |
| Wind speed (m/s) | Power (kW) |
|---|---|
| 6 | 0.245 |
| 8 | 0.58 |
| 10 | 1.1 |
| 12 | 2 |
| 15 | 3.8 |
| 18 | 6.6 |
| 20 | 9 |
| 22 | 12 |
Honest answers on output, payback, wind speed and siting.
It depends on your average wind speed. At a breezy 6 m/s site the Magnum produces roughly 3,000–3,800 kWh per year, and far more on exposed coastal or hilltop sites. Below its 6 m/s cut-in it generates little, so it suits open, windy locations. Use the "Will it pay for itself?" calculator on this page for your exact wind speed.
On a good wind site the Magnum can pay for itself remarkably fast — sometimes within a couple of years at a breezy 6 m/s average wind, at your local electricity price of about $0.18/kWh and the $999 price. Payback is longer on calmer sites and shorter on windier ones; rising electricity prices shorten it further.
The Magnum is a horizontal-axis turbine with a 6 m/s cut-in, so it is at its best on open, consistently windy sites — coasts, hilltops and exposed countryside. For sheltered or urban locations with lighter, gustier wind, the vertical-axis Atlas (2 m/s cut-in) is usually the better choice.
The Magnum uses a premium 15 kW continuously-rated motor but peaks at about 12 kW of output, so the motor runs far below its limit. Running an over-rated motor gently means less heat, less wear and a much longer service life — it is built to keep working reliably for decades.
Yes, for homes with a good, open wind exposure — rural properties, farms, coastal and hilltop sites. It is a powerful horizontal turbine that rewards steady wind. If your site is built-up or sheltered, consider the vertical Atlas, which starts in much lighter wind.
Yes. The Magnum is designed for grid-tied (on-grid) use with a compatible inverter and cabling, offsetting the electricity your home draws and, where allowed, exporting surplus. A charge controller and battery are not needed for on-grid use.
Very little. With a heavily over-rated, gently-loaded motor and durable construction, the Magnum is designed to run for years with minimal upkeep — an occasional visual check is usually all that is needed.
Yes. TESUP designs and manufactures its own wind turbines, solar products and accessories in its own factories, and delivers worldwide from local warehouses across many regions. The photos below are real, recent images from our factories and dispatch areas, published by our team as the work is done — so you can see products being built, boxed and prepared for shipping.
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Verified reviews from real TESUP owners
ordered the first versions of the TESUP Magnum wind turbines in 2018 for Northern Pole research missions, and they have been generating electricity reliably in some of the roughest conditions on Earth.
