Water wheels began being displaced by the smaller, less expensive and more efficient turbine developed by Benoît Fourneyron, beginning with his first model in 1827.

A friend of mine has developed and patented a tidal turbine far more efficient than any currently out there - I am investing in his company.

By 1915, more powerful and efficient geared turbines had been installed.

Growth continued with bigger farms and larger, more efficient turbines sitting on taller and taller masts.

It may be better locked off or feathered while the towed generator's more efficient turbine gathers energy.

Criticism of wind power has been mitigated by increasingly efficient turbines and more bird-sensitive placement.

The most efficient turbines have reached 46% efficiency.

The shell had exploded near the small efficient turbine.

In those days they were waterwheels, some of which were more efficient than all but the most efficient and well made turbines we have today.

Our power is obtained by the combustion of gases in highly efficient turbines.