[2] The company's first wind generator was a 30 kW machine, developed by 1984 with funding assistance from the Spanish Science Ministry.

[3] The particular demands of installing wind turbines in mountainous regions in Spain which included poor road access and blustery (high turbulence) conditions led to specific design features of Ecotècnia's turbines - including a modular construction of the turbine (three components: rotor and shaft; mainframe and yaw system; and the drive train - each less than 30t), as well as isolation of the gearbox from the main drive, reducing non-torque gearbox loads.

[5] After 2003 most of the company's installations used its 1.67MW IEC 61400 class II ECO74,[6] and class IIIA ECO80,[7] three blade turbine models;[5] both typically used a mechanically isolated Winergy AG PEAB 4390.2 planetary gearbox driving a doubly fed induction generator (typically ABB, Siemens, Winergy sourced) with IGBT inverter control, driven by individually pitch controlled blades manufactured by LM Wind Power.

[9] By late 2007 the company employed over 800 people, with sales of approximately €400 million pa., and operated wind turbine assembly plants in Somozas and Buñuel, other sites at Rio del Pozo (control panels) and Coreses (tower manufacturing).

[10] The company also manufactured small scale autonomous energy systems for isolated locations (tradename 'CICLOPS') comprising windgenerator (10 kW), photovoltaic solar source (2 to 10 kW), generator, battery and inverter, and was active in small scale photovoltaic cell installation (factory Pla de Santa Maria.[10]).

[15] In November 2011 a 300MW per year capacity manufacturing plant in Camaçari near Salvador, Bahia, Brazil was formally opened.

[18] The Haliade 150 turbine was a development of the previous mechanically isolated transmission designs developed by Ecotècnia;[note 1] the gearbox driven electrically generator was omitted and replaced with a gearless direct drive permanent magnet synchronous generator designed for higher efficiency and greater reliability with fewer moving parts.

[20] In April 2012 the French state awarded an EDF/DONG Energy/Alstom consortium three contracts for offshore wind farms (Saint-Nazaire, Courseulles-sur-Mer, Fécamp.

[33][34] In early 2015 a wind turbine tower factory was opened in Jacobina, Bahia, Brazil; constructed as a joint venture (51%/49%) between Andrade Gutierrez and Alstom.