Mini wind power plants

Generally, using nominal power as a criterion for classification, we speak of mini wind power plants when the power ranges from 20 kW to 200 kW  (plants with powers lower than this are considered micro-wind power plants). In the case of  larger amounts, the power plants are  classified as large-scale wind power plants.
Current technologies include two macro-types of wind generators: Horizontal Axis Wind Turbines (HAWT) which are the conventional turbines whose axis  is parallel to the direction of the wind, and Vertical Axis Wind Turbines  (VAWT) whose axis  is perpendicular to the direction of the wind. There are many types of turbines, depending on the number of blades they are made of (one-bladed, two-bladed, three-bladed, multi-bladed). To date, the technology that is used the most is the three-bladed horizontal axis system, even though it is not uncommon to find installations with two-bladed vertical axis turbines.
There are numerous advantages for those who install mini wind power plants. The main applications of mini wind power are:

  • Systems connected with the main network (grid – connected systems).
  • Exchange on site: excess energy, that is not utilized, is sent to the main network,  it is accounted for and credited when energy is taken from the network at a later time. Resolution AEEG n°186 issued in 2009, gives the user the possibility to be paid  for the excess electricity by GSE – Gestore dei Servizi Elettrici (the Italian company for electric services).
  • Sale of energy (all inclusive rate): energy is paid for at a rate equal to 0.3e/kWh, which includes the incentive. In this situation the installation of an inverter is necessary, which transforms the current from continuous into alternating current, according to the standards of the distribution network, thus making the exchange possible. Furthermore, the installation of special meters is necessary,  which in the case of an exchange in on a site (two-directional), enable the calculation of the balance of energy that is released to and energy that is drawn from the main network.
  • Off-grid systems, feeding isolated users.
  • For homes or small industries (single turbines or stand-alone systems, or systems coupled with cogeneration or photovoltaic plants, hybrid systems).
  • To serve telecommunication systems (signal repeaters, antennas).
  • Air quality monitoring systems.
  • Water pumping plants.
  • Sea water desalination plants (drinking water).

Special reports

From the Multimedia section

  • energy

    Global installed wind capacity, top 10 countries, 2017

    Look

    energy

    Wind power production in Italy

    Look

    energy

    Installed wind power in Europe in 2017

    Look
  • energy

    Beaufort wind scale

    Look

    energy

    Vertical axis generator

    Look

    energy

    Blender

    Look
  • energy

    In the Flanders

    Look

    energy

    Windmill

    Look

    energy

    Share of renewable electricity sources in total electricity sector consumption (2018)

    Look
  • energy

    Global installed wind capacity, top 10 countries, 2017

    Look

    energy

    Wind power production in Italy

    Look
  • energy

    Installed wind power in Europe in 2017

    Look

    energy

    Beaufort wind scale

    Look
  • energy

    Vertical axis generator

    Look

    energy

    Blender

    Look
  • energy

    Global installed wind capacity, top 10 countries, 2017

    Look
  • energy

    Wind power production in Italy

    Look
  • energy

    Installed wind power in Europe in 2017

    Look

Facts

  • 8 July 2013

    Hywind, floating wind power turbines

    The future of wind power turbines is afloat...

    Italian offshore wind farm

    The first Italian wind farm will be installed in the waters of the Strait of Otranto...

  • 16 May 2011

    An artificial geyser

    Electric and thermal power produced from geothermal energy depend on the existence of underground infiltrations...

    A hydrogen house

    In Settimo, a municipality close to Turin, the first Unité d’Abitation has been created...

  • Hydrogen from biomass

    Hydrogen is an energy carrier that allows to generate energy in an environmentally sustainable way...

    Phyto-depuration

    A very interesting project has been carried out by Lombardy region...