SUN2 太阳币Suncoin2 (简写SUN2) 是一种点对点技术的加密通证资产，于2018年6月问世，总量3亿枚，是skyledger生态上的一个开源项目。太阳币相信，可持续性发展的基础在于提供公众负担得起的清洁能源。太阳币项目的愿景是通过建立一个去中心化的太阳能交易所，打破能源巨头公司的垄断，使所有的太阳能项目都可以在市场上自由交易。
Suncoin2, launched in June 2018 with a total of 300 million coins, is an encrypted token built on open source blockchain technology called Skyledger. Suncoin2 believes that clean and affordable energy is the fundamental basis of sustainable development. The vision of Suncoin2 project is to break the monopoly of energy giants by creating a decentralised solar exchange that will allow all solar projects to be freely traded on the market.