The price of solar energy is already plummeting: the National Bank of Abu Dhabi has noted that a large solar installation in Dubai could produce energy at a price that would be competitive with oil at $10 per barrel. But there are significant obstacles to the widespread use of solar energy and other sources of renewable electricity, including a desperate need for cheaper, more efficient means of energy storage and transmission.
全球阿波罗计划有助于世界减少二氧化碳排放和能源支出。太阳能价格已经大幅下降：阿布扎比国民银行（National Bank of Abu Dhabi）指出，迪拜的大规模太阳能装置能够产生可以与10美元/桶的石油进行价格竞争的能源。但大规模使用太阳能和其他可再生电力资源还有巨大的障碍，包括对更廉价、更高效的能源储存和转换方法的需要。