Alstom launches wind turbine model for low wind sites

Paris, September 28, 2011 — Alstom announces the launch of the ECO 122 – a 2.7MW onshore wind turbine that combines high power and high capacity factor to boost energy yield in low wind regions worldwide.

At a wind speed of 7.5 m/s the ECO 122 delivers a net wind farm capacity factor of up to 42 percent, equivalent to 3,600 full-load hours each year.

Its 122-metre rotor diameter and swept area of 11,700 m2 – the largest in the 2 MW to 3 MW turbine segment — maximize the harvest of wind energy and the return on investment to create new business opportunities for customers from low wind sites.

The ECO 122 produces about 25 percent increased wind farm yield on a given piece of land compared with today’s 1.5 – 2 MW wind turbines, and fewer turbines need to be installed. As an example, on a typical low wind site, six current generation 1.5 – 2 MW turbines will produce around 40 GWh/year2, compared with more than 50 GWh/year with only five ECO 122 turbines.

This yield advantage also means capital expenditure savings. An ECO 122 powered wind farm can reduce balance of plant costs by 10-15 percent, compared with a farm using typical 1.5 – 2 MW machines, due to fewer foundations, platforms and roads, and less cabling.

The ECO 122 is the latest evolution of Alstom’s proven ECO 100 turbine platform, and the result of more than 30 years of experience in wind turbine design. The ECO 100 platform now has more than 350 MW installed or under construction worldwide and over 200,000 cumulative operating hours since 2008. All Alstom wind turbines are based upon the Alstom Pure Torque rotor support concept that protects the drive train from deflection loads, ensuring higher reliability and lower maintenance costs.

The first ECO 122 will be installed in mid 2012 with first commercial deliveries expected in early 2013.

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