NGOs have criticized the inclusion of large hydropower projects, which they consider unsustainable, as CDM projects.{https://www.internationalrivers.org/km/taxonomy/term/1024} Lately, both the CDM EB and investors have become concerned about such projects for potential lack of additionality. One reason was that many of these projects had started well before applying for CDM status. In June 2008, third party validator TÜV SÜD Group rejected a hydropower project in China because the project proponents could not document that they had seriously considered CDM at the time the project was started. In July 2008, third party validators agreed that projects applying for CDM status more than one year after having taken their investment decision should not qualify for CDM status. Currently, the largest power plant to receive CDM registration is the Jirau Hydroelectric Plant in Brazil.