Solar photovoltaic (PV) capacity installed in the United Kingdom has now reached 5 gigawatts (GW), making the UK the sixth country to hit this landmark figure, according to an international survey released today. Of the other five leading solar-PV countries, Germany remains the undisputed leader, with more than 37GW. China, Japan, Italy and the United States each have more than 10GW installed, claims the report produced by NPD Solarbuzz. It says that 90% of the 5GW of solar PV capacity in the UK has been installed during the past three years, with 46% of the total capacity located in the South West and South East regions. At 5GW, solar PV capacity in the UK can now power nearly 6% of all households. The cumulative PV capacity is expected to continue to grow strongly until the end of March next year, before pending policy changes take effect to slow down the large ground-mounted PV segment, it is claimed.