The Islamic (Sharia-compliant) economic system is neither pure socialist nor pure capitalist. Instead, it is a system of religious-ethical finance, mixing free trade with charity and ethical oversight. Islamic “bonds” are known as sukuk, and they avoid the traditional interest-paying structure used by Western bonds. Instead, they are sold to investors, who then rent them back to the issuer for a fixed rental fee. The result is a profit-sharing vehicle. It creates an exchange of tangible assets rather than a trade in debt and interest, and is halal under Sharia law. Recently, there's been growth in sukuk for renewable energy projects. Given the massive expansion of solar and wind projects in the Middle East, and the recent talk of Green Sukuk, sustainable energy looks like it's going to break through as the hot spot for this alternative investment vehicle […]