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The World Resources Institute (WRI) evaluated a sludge-to-energy project in Xiangyang City, China, which utilizes high-temperature thermal hydrolysis and anaerobic digestion. The project achieves significant environmental gains, including the recovery of 96% of nitrogen and 99% of phosphorous, and the reduction of greenhouse gas emissions by 95% to 98% compared to landfilling and incineration. Over a 21-year period, the project is expected to produce 45.4 million m3 of natural gas, replacing 60,000 m3 of gasoline and further reducing CO2e emissions by 140,000 metric tons. Economically, the project's success is attributed to a 'government-bank-enterprise' partnership involving the municipal government, KfW Bankengruppe of Germany, and the Export-Import Bank of China, alongside a market-oriented design focusing on the sale of compressed natural gas (CNG) and biochar.