Between 2000 and 2010, the total support of the RES Act amounted to EUR 61.7 billion, far exceeding prior government expectations and increasing sharply over the past few' years. In 2010, feed-in tariffs amounted to around EUR 13.2 billion (0.5% of GDP). This is notably due to the strong development of photovoltaics, boosted by generous feed-in tariffs and a sharp decline in costs.