For the tracking systems, operators Valsolar and Cavalum still receive the higher feed-in tariff guaranteed by royal decree RD 661/2007 for solar installations commissioned before the end of September. The decree guarantees a higher payment for installations of up to100 kilowatts. Valsolar and Cavalum have therefore divided the four solar parks into smaller systems, each with an output of 100 kilowatts. They receive 45.51 eurocents for each kilowatt-hour fed into the grid. The four solar parks cost a total of 40 million euros. Valsolar is reckoning on a payback period of 10 years.
When deciding on which inverters to install, Valsolar and Cavalum chose Sputnik Engineering’s 100-kilowatt central inverters. “We know that the devices are good. That’s why we chose SolarMax inverters,” explains Valsolar’s company spokesperson Mónica Martins. In 2008 alone the company has so far installed 70 SolarMax inverters.