Hollande's economic policies are wide-ranging, including supporting the creation of a European credit rating agency, the separation of lending and investment in banks, reducing the share of electricity generated by nuclear power in France from 75 to 50% in favour of renewable Energy sources, merging income tax and the General Social Contribution (CSG), creating an additional 45% for additional income of 150,000 euros, capping tax loopholes at a maximum of €10,000 per year, and questioning the relief solidarity tax on wealth (ISF, Impôt de Solidarité sur la Fortune) measure that should bring €29 billion in additional revenue. Hollande also signalled his intent to implement a 75% income tax rate on revenue earned above 1,000,000 euros per year, to generate the provision of development funds for deprived suburbs, and to return to a deficit of zero percent of GDP by 2017. The tax plan proved controversial, with courts ruling it unconstitutional in 2012, only to then take the opposite position on a redrafted version in 2013.