2020-2021: World Bank Consultancy, Climate Informed Public Investment Management, Government for Albania
2017: World Bank Consultancy, Cost Benefit Analysis and the Socially Optimal Discount Rate for Public Investment Management, Government of Moldova
2015: World Bank Consultancy, Cost Benefit Analysis and the Socially Optimal Discount Rate for Public Investment Management, Government of Ukraine
2015: World Bank Consultancy, Cost Benefit Analysis and the Socially Optimal Discount Rate for Public Investment Management, Government of Cyprus
2006: WORLD BANK MISSION: The Importance of the Groundwater Economy to Indian Development: Investing in management for sustainability. Member of the World Bank Groundwater Management Advisory Team (GW·MATE)). February 2006.
2003-2004: WORLD BANK MISSION: Water Pricing and Management in Urban China: Welfare Implications; funded by the World Bank, 2003-2004.
2003-2004: WORLD BANK DESK WORK: A REPORT ON THE ECONOMICS OF ARSENIC MITIGATION: VALUING COST AND BENEFITS UNDER UNCERTAINTY AND HEALTH RISK; funded by the World Bank, South and East Asia Division, 2003-2004.
2003: WORLD BANK MISSION: Bangladesh Arsenic Mitigation Water Supply Project: Water Tariffication Re-structuring in Rural Bangladesh. July 2003. (Relevant report is available upon request from World Bank Head-Quarters).
2003: WORLD BANK MISSION: The significance of subsidized electric energy tariffs on the behavior of groundwater users for agriculture in India in general and in Rajasthan in particular (within the context of the implementation of the Bank financed RSWSR Project and as a Member of the World Bank Groundwater Management Advisory Team (GW·MATE)). November 2003.
2002: WORLD BANK: WRM (Water Resource Management) Group on Economic Incentives, World Bank; initiated in 2002. http://www.worldbank.org/grouponei . This web address can be used for downloading the short paper by Pearce, D. and P. Koundouri on ‘Fertiliser and Pesticide Taxes for Controlling Non-Point Agricultural Pollution’.