The years 2007 and, in particular, 2008 saw a significant
increase in installed power, from a few tens of MW in previous
years to almost 3500 MW in the year 2008. This increase was
facilitated by a new energy regulation, RD 661/2007 (Royal Decree
RD 661/2007 of May 25, regulating electricity production in the
special regime), which established new energy tariffs starting on
June 1, 2007, with a 25-year feed-in-tariff system [60]. However,
the country experienced a decrease in newly installed power in
2009 due to the enactment of new laws and ordinances that
restricted, and then removed, previously established incentives for
the sale of electricity generated with PV systems. Yet the solar PV
industry was still the first to reach the goals set forth in the Plan of
Renewable Energy 2005–2010, demonstrating its capacity for
adaptation and cost reduction in achieving these objectives.