The week in green numbers…

57.9: The percentage of South Australia’s total electricity demand produced by wind energy on Tuesday of this week, and 55 per cent on Wednesday, according Intelligent Energy Systems, using data from the Australian Market Operator.

186: The Australian-dollar per megawatt-hour amount that Spanish renewables firm Fotowatio Renewable Ventures bid to win the ground breaking reverse solar auction held by the ACT government – the first in Australia.

20: The megawatt capacity of the solar PV farm FRV will now build at Royalla, 23km south of the Canberra CBD, making it the largest in Australia when it is completed in 2014.

2,000,000: The average US-dollar amount in demand for rooftop PV that US residential solar financing company Clean Power Finance was getting per day for the month of August. CPF currently has 1,350 installer partners and 100 financial partners. “What you’re seeing is the development of an industry,” the company’s CEO Nat Kreamer told GreentechSolar last month.

50 trillion: The Japanese-yen amount that Japan will have to invest in renewable energy by 2030 if it decides to completely phase out nuclear power, according to government estimates.

150 million: The metric tonnes of coal output Indonesia’s East Kalimantan governor is considering setting as the region’s annual limit, to preserve the resource and spur the development of alternative energy. Bloomberg reports that the province – the top coal producer in a country that is the world’s largest exporter of thermal coal – is expected to produce 220 million tonnes of power-station coal this year.

255: The megawatt amount of solar PV capacity that India’s Jawaharlal Nehru National Solar Mission has so far commissioned, as well as 2.5MW of concentrating solar power, according to the India Renewable Energy Development Agency. JNNSM plans to commission an additional 38MW of PV capacity and 497.5MW of CSP under batch 1, as well as 350MW of PV capacity under batch 2.

801: The megawatt amount of mainland Greece’s total installed solar PV capacity, including 75MW installed in the month of July, and 97MW in June.

413: The megawatt amount of wind energy capacity that Spain’s wind sector installed during the first half of 2012 – 14 per cent lower than during the same period in 2011, according to the Spanish Wind Energy Association.

177: 120: 107: The per cent increases in the world market export prices of maize, wheat, and processed rice, respectively, that Oxfam estimates we may see in 2030 – up from their 2010 prices – based on new research from the UK’s Institute of Development Studies, that includes the impact on global food production of extreme weather.

Get up to 3 quotes from pre-vetted solar (and battery) installers.