Monte Alto Solar Garden in Milagro

Monte Alto, located at Milagro (Navarra), is perhaps the most emblematic of the 19 ‘solar gardens’ developed by ACCIONA in Spain.

Solar gardens are groupings of photovoltaic plant owners who share common infrastructures and services. Located in Navarra, Castilla-La Mancha, Extremadura and Aragon, the solar gardens developed by ACCIONA have a total capacity of 62 MWp and have more than 3,500 owners.


  • Location: Milagro, Navarra (Spain).
  • Peak capacity: 9.50 MWp.
  • Technology: Photovoltaic solar with azimuthal tracking.
  • Start-up: 2007.
  • Owners: 753 individual owners.
  • Developer: ACCIONA.


  • Average annual production: 14 GWh.
  • Clean energy equivalent to the demand from around 4,000 homes.
  • 864 solar trackers (5 kW and 11 kW) and 25 fixed structures
  • 51-hectare site
  • 13,400 metric tons of CO2 avoided per year 
  • Complex management, with more than 750 individual owners
  • Adaptation to an environment of scrubland
  • In-house-designed azimuthal solar trackers