The ladders are easy to transport and manuever on the jobsite.
Throughout the 20th century parallel paths developed small wind stations suitable for farms or residences, and larger utility-scale wind generators that could be connected to electric power grids for remote use of power.
Today wind powered generators operate in every size range between tiny stations for battery charging at isolated residences, up to near-gigawatt sized offshore wind farms that provide electric power to national electrical networks.
Wind farms consist of many individual wind turbines which are connected to the electric power transmission network.
Onshore wind is an inexpensive source of electric power, competitive with or in many places cheaper than coal or gas plants.
Wind power was widely available and not confined to the banks of fast-flowing streams, or later, requiring sources of fuel.
Wind-powered pumps drained the polders of the Netherlands, and in arid regions such as the American mid-west or the Australian outback, wind pumps provided water for live stock and steam engines.Different types of wind turbine generators behave differently during transmission grid disturbances, so extensive modelling of the dynamic electromechanical characteristics of a new wind farm is required by transmission system operators to ensure predictable stable behaviour during system faults.In particular, induction generators cannot support the system voltage during faults, unlike steam or hydro turbine-driven synchronous generators.Wind power gives variable power which is very consistent from year to year but which has significant variation over shorter time scales.It is therefore used in conjunction with other electric power sources to give a reliable supply.For example, Gansu Wind Farm, the largest wind farm in the world, has several thousand turbines. Almost all large wind turbines have the same design — a horizontal axis wind turbine having an upwind rotor with three blades, attached to a nacelle on top of a tall tubular tower.