Power to the main airport on Baltra, one of the Galapagos islands, was previously supplied by two diesel generators which produced 1200 GWh/year.
A solar power plant, added in October 2013, produces more than 141 GWh/year and has reduced the gensets’ fuel consumption as well as saving up to 12% on fuel costs, according to photovoltaic inverter manufacturer Ingeteam, whose inverters were recently installed in the solar plant’s power supply system.
In the hybrid system, Ingeteam said its diesel-PV controllers monitor power flows and manage the PV power injected into the diesel grid in order to guarantee system stability, achieving up to 70% of PV penetration compared to the total diesel capacity.
The 18 kWp system features 352 solar panels and three Ingecon Sun 25 U inverters. These inverters have been specifically designed to comply with US regulations, are suitable for outdoor installation and achieve a maximum efficiency of 96.1%, Ingeteam said.