Could anyone explain this paragraph in an easier way or just rephrase in to easier understandable english . i didnt get the idea of mentioning that there are constraints that prevent re from occuring with the example of abu dhabi note: re : renewable energy a variety of constraints or conditions prevent re investments from occurring. these constraints put renewable at an economic, regulatory or institutional disadvantage relative to other forms of energy supply in the region . as example, abu dhabi, one of the world's largest producers of oil has actively attempted to diversify its energy economy in recent years through local and international re investments as many other countries in the gulf region [21]. the aim is to use all available conventional and non-conventional energy resources for electricity generation for longer term period. the ultimate objective of uae's policy is to maximize use of indigenous energy resources and minimize energy subsidies [22]. the goal of this paper is to provide an overview of energy balance compared to sustainable energy in uae.