Denmark is a leading country in renewable energy production and usage. Renewable energy sources collectively produced 81% of Denmark's electricity generation in 2022, and are expected to provide 100% of national electric power production from 2030. Including energy use in the heating/cooling and transport sectors, Denmark is expected to reach in 2050, up from the 34% recorded in 2021.
[pdf] At the start of January 2017, Costa Rica's 4.9 million-person population ran entirely on renewable energy power for 75 days straight. This was a record-breaking achievement in that Costa Rica was the first nation to power itself completely clean of fossil fuels for this long a timeframe. This summer was an exceptionally rainy one for Costa Rica: while usually the dry season, the sheer amount of power provided from an unusually high amount of precipitation led to a higher than u.
[pdf] 艾莉索峡谷天然气泄露事故（又称波特牧场气体泄露事故 ）指自2015年10月23日起圣塔苏珊娜山脉（英语：）内靠近波特牧场（英语：）的艾莉索峡谷地下储存设施发生的大规模、不可控、持续天然气泄露事故 。此处是全美第二大天然气储存设施，隶属于森普拉能源（英语：）的子公司南加州天然.
[pdf] 
