Solar photovoltaic (PV) electricity continued its remarkable growth trend in 2011, even in the midst of a financial and economic crisis and even as the PV industry was enduring a period of consolidation. As they have for the past decade, PV markets again grew faster than anyone had expected both in Europe and around the world. Such a rapid growth rate cannot be expected to last forever, however, and the industry is now weathering a period of uncertainty in the short-term. But over the medium- and long-terms the prospects for continued robust growth are good. The results of 2011 – and indeed the outlook for the next several years – show that under the right policy conditions PV can continue its progress towards competitiveness in key electricity markets and become a mainstream energy source.