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History of the G-res tool

Since 2006, the International Hydropower Association has been working with UNESCO, the World Bank and a range of stakeholders to develop common understanding to assess the carbon profile of hydropower facilities and reservoirs.

This work resulted in the publication of the UNESCO/IHA GHG Measurement Guidelines for Freshwater Reservoirs.

The guidelines helped the hydropower industry to better understand where GHG emissions from reservoir come from and how to accurately assess them.

As the hydropower and water management industry evolves, the need for simpler ways to assess the net GHG emission was highlighted by many hydropower companies, investors, consultants, decision-makers and other stakeholders.

Since 2014, IHA and its partners have worked to develop scientific models to predict GHG emissions from reservoirs without going to the field to take measurements. To make those models available to a larger public, the G-res Tool interface was developed.

A beta version of the G-res Tool was first presented publicly in May 2015 at the World Hydropower Conference in Beijing, China.

The G-res Tool was officially launched at the World Hydropower Congress in Addis Ababa, Ethiopia, in May 2017.