About The Rutland 1200 Terrain Windcharger


When you need a reliable source of power at an off-grid site, take a look at the Rutland 1200 Terrain turbine. Designed, developed and manufactured in the UK, our latest Rutland 1200 Terrain is available in 12V, 24V and 48V models.

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What is The Rutland 1200 Terrain Windcharger?

The Rutland 1200 Terrain is the newest addition to Marlec’s world renowned Rutland Windcharger range. This new land based turbine works alongside it’s technologically advanced MPPT controller specifically designed for land.


When you need a reliable source of power at an off-grid site, take a look at the Rutland 1200 Terrain turbine. Designed, developed and manufactured by Marlec in the UK, our latest Rutland 1200 Terrain captures the energy in the wind to provide the power you need for operating low energy devices at remote locations. Power that is generated is stored in the batteries, ready for when it is needed and these can also be separately charged in parallel with solar panels or generators.

Typical Applications

• Railways & Highways
• Environmental Monitoring Sites
• Telecommunications Sites
• Remote Homes
• Caravans & Motorhomes

Generate Power For:

• Telecommunication
• Instrumentation
• Street lighting and signage
• Lighting, refrigeration, TV etc

Off grid power for railways
Off Grid Power for higways

Why Choose The Rutland 1200 Terrain Windcharger?

Our Rutland 1200 Terrain Turbine sets the standards for micro wind turbines in both performance and reliability. At our manufacturing facility in Corby, UK we use high grade materials to create a robust, high quality and long lasting turbine. Distinctive blue hard anodized marine grade aluminium, modern and lightweight UV stable injection mouldings and stainless steel components and fasteners perform in temperatures experienced from the Arctic to the equator.

Ideal for remote off-grid sites and professional applications

Modern, durable materials for excellent reliability and product longevity

Simpler, faster and lower cost installation compared to grid power

Enables installation of essential and safety equipment at remote sites

Available in 12V, 24V and 48V

Generates up to 483W

Produces 290W at 11m/s (21 knots) wind speeds

Manufactured using high quality materials, designed to endure harsh environments

Designed, developed and manufactured in the UK by the UK’s longest established renewable energy company.

Rutland 1200 Terrain Turbine Features

The Rutland 1200 Terrain combines a highly efficient wind turbine with innovative design features and a technologically advanced controller. Together they generate real-life levels of power that lead the market of micro wind turbines.

There are three technical advantages the Rutland 1200 Windcharger has over similar models in the market:

Unique Tri-Namic Aerofoil Blades

The refined aerofoil blade profile is purpose designed for quietness, low windspeed start up and high wind peak aerodynamic performance. Each injection moulded blade is identical and perfectly balanced for smooth operation.

• A rotor that remains virtually silent across all windspeeds.
• A very low cut-in windspeed that starts charging at <3m/s (6mph/9kmph)
• Unrivalled power generation of 250W at 10m/s (23mph/37kmph) and peak power of 483W @ 15m/s.
Our efficient, finely profiled Tri-namic blades ensure that the Rutland 1200 converts the maximum energy available in the wind to charge your batteries.


The Rutland 1200T generator is based on Marlec’s pioneering disk type design. Its low resistance AC operation combines the latest powerful rare earth type magnets with a 3-phase winding and low friction bearings. This is housed in a protective aluminium casing and all manufactured by Marlec in the UK.

• Cool operation which increases efficiency and reliability.
• The low resistance generator works in harmony with the aerofoil blades and controller to ensure that across the whole range of windspeeds the Rutland 1200T generates the maximum energy possible from the available wind.
• The generator is sealed to withstand weather conditions around the world.
The overall benefit is greater Ampere hours of energy delivered to your battery

Elegant and Aerodynamically Styled

The sculpted nose and nacelle efficiently direct the flow of air leading to the built-in tail fin which directs the rotor to the prevailing wind.

Rutland 1200 Turbine

NEW MPPT Terrain Controller Features

This purpose designed Rutland 1200 Terrain charge controller incorporates hi-tech and other optional features to fully optimise power generation from the turbine system and prevent overcharging.

The controller is a key component in the Rutland 1200T’s holistic design providing intelligence at managing the energy, the turbine and the battery to achieve maximum Ampere hours of charge to the battery bank per day.

By design the controller will operate with lead acid, AGM, and gel batteries. The charge parameters can be programmed using the Rutland Controller Interface Cable and PC App for other battery technologies.

Operating Technologies:

Maximum Power Point Tracking

MPPT technology is an intelligent microprocessor controlled feature that electronically optimises power generation. This enables the Rutland 1200T system to commence charging at very low rotor speeds, maximising typical daily low to medium windspeeds.

Overcharge Control

Digital technology used by our engineers very effectively prevents batteries overcharging. Battery voltage levels are continuously monitored and as full
capacity is reached the turbine speed is controlled thereby preventing overcharging. The blades may run slowly and automatically resume normal operation as the battery

Multi-Stage Charging Regime

An algorithm embedded within the overcharge control provides multi-stage charging to maintain it through Bulk, Absorption and Float phases. The system responds to changes in the state of the battery to deliver as much available energy to maintain or reach full charge capacity. This charging regime promotes good capacity and battery longevity.

Connection Features:

Temperature Compensation

A temperature sensor is included and when fitted this feature automatically adjusts the charging regime voltage levels according to any variation from the standard 25˚C settings. This ensures batteries reach and maintain full capacity whatever the ambient temperature.

Remote Voltage Sensor

This sensor wire facility detects battery voltage levels for the controller operation when batteries are positioned >1.5m away. This overcomes voltage drop that may occur in long cables preventing full charging performance. 2 positions are available in the event that 2 separate battery banks are connected via a separate charge splitter.

Serial Data Socket

Provides a connection for user options;
Optional Remote Display, data collection for professional systems or Marlec Controller Interface Cable with App for programming of Voltage parameters and auto shut-down required for other battery types, e.g. Lithium.

Operating Features:

Run / Stall Button with LED Indicator

Used to manually start and soft stall operation. Soft-stall is a deceleration of the rotor until it eventually spins at a slow idle. Bi-colour LED indicates charging status; Standby, Charging and Regulating.

Battery LED Indicator

Tri-colour indicates battery charge level.

Electronic Over Current Shut-down

This protection automatically activates in high currents to reduce electrical load on the generator and mechanical load on the tower. This stalls the turbine and resets after 5 minutes, it may cycle in high winds.

Electronic Over Temperature Shut-down

Automatically activates if the controller internal operating temperatures are exceeded. The turbine is temporarily stalled.

Rutland 1200 Remote Display

View actual performance, the operating condition and remotely shutdown using the new Remote Digital Display -1200. The Remote Digital Display is designed to be conveniently located on board, for example on a chart table. There are a number of optional screens for continuous display: wind power generation, solar generation or the default screen where both these, battery voltages and charge status are displayed.

  • Push buttons simply scroll through the screen and access setting options.
  • 2 Installation options come as standard for surface or recess mounting and connection to the controller is made via the supplied 3m serial cable. 5m and 10m replacement cable available in our shop.
  • Surface mount : 125 x 75 x 50mm, 203g
  • Recess Mount: 125 x 75 x 9mm, 132g   Cut out : 100 x 62mm
  • Packed : 155 x 145 x 60, 320g

Rutland 1200 Terrain Specifications

Cut in Windspeed 2.5 m/s
Output Voltages Available (Nominal) 12V 24V 48V
Power / Current Ratings:
 5m/s     11mph 40W(2.9A) 40W(1.45A) 40W(0.75A)
 11m/s     25mph 290W(21.3A) 290W(10.7A) 290W(5.35A)
 15m/s     33mph 483W(35A) 483W(17.5A) 483W(8.75A)
Generator Type  Low friction, brushless 3 phase alternator with
high specification rare earth magnets
Yaw Rotation Slipring and brush gear for 360º free rotation
Governing Devices Electronic stalling for electrical protection and to
prevent over-charging
Post Fixing Internal /External Diameter 41mm / 48mm over a minimum of 600mm
length to clear blade tips
Minimum Tower Height 6m on land (20ft)
Turbine Diameter 1200mm (48in)
Turning Radius 620mm (24 3/8 in)
Turbine Net Weight 7.8kg (17.2lbs)
Controller Dimensions & Weight 168 x 147 x 52mm, 680g
(6.6 x 5.7 x 2in, 1.49lbs)
NB: 5cm clearance required on all sides
Packed Weight & Dimensions 900 x 390 x 185mm, 11.25kg
(35.4 x 15.3 x 7.2in, 24.8lbs)

Performance of the Rutland 1200 Terrain

Actual Performance Data

We publish our curves based on measured data and use ongoing actual performance data collected and monitored over long periods of time of the turbines running in real wind conditions.

This means the turbines are also subject to side winds, upwinds and sudden changes of wind direction (these are the causes of turbulence) experienced at a user’s typical installation.

Our curves represent a truer reflection of the power output you can expect from your Rutland Windcharger compared with many other turbines.

Whats a Power Curve?

A power curve is usually given by manufacturers to represent the performance of a wind turbine. Some may be based on theoretical or predicted output and others plot the power achieved under steady state conditions.

Wind tunnel testing and turbines run on vehicle rooftops can provide useful information for a manufacturer but power curves derived in this way need to be understood as running in a clear and unobstructed wind flow so they do not represent what is actually achieved in real wind conditions. Power curves from theoretical analysis cannot be regarded as representing what is actually achieved at all.

Energy Yield

A more useful guide of how much power you can expect from your turbine is the Annual Energy Yield. That’s because wind energy is a “cube law,” which means that when the windspeed doubles the power potential is 8 times!

Check the Annual Energy Yield bar chart which uses the Rayleigh distribution to calculate the Ampere hours of battery charging you can expect at given average wind speeds per annum.

As these are averaged across the year you should consider how these figures will ebb and flow across the seasons when you might expect a higher average during the windier seasons. We often recommend the combination of wind and solar charging to smooth out the daily energy yield.

Rutland 1200 Terrain Bundles

Rutland 1200 Terrain Kit


Buy 12VBuy 24VBuy 48V


  • Rutland 1200 Terrain
  • Land Tower Kit
  • Rigging Tower  Kit
  • MPPT Terrain Controller

Rutland 1200 Terrain Expert Kit


Buy 12VBuy 24VBuy 48V


  • Rutland 1200 Terrain
  • Rutland 1200 Remote Display
  • Land Tower Kit
  • Rigging Tower  Kit
  • MPPT Terrain Controller

*Cable not included. Cable specification is subject to required length.

Cable for Windcharger to Controller

902-037 2.5mm² OceanFlex –  3 Core Cable (per meter) £3.17
 902-042 4mm² Tinned – 3 Core Cable (per meter) £10.15

902-043 6mm² Tinned – 3 Core Cable (per meter) £22.94

Controller to Battery

902-027 Cable 16mm² Red (per meter) £7.66
 902-028 Cable 16mm² Black (per meter) £7.66


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