Second, political backing must support projects that are necessary at the national level against excessive delays, through appropriate regulatory processes and zoning laws, as well as provide effective mechanisms for consultation, mediation and compensation. The challenge is always to combine pertinent indicators with relevant, consistent and comparable data. In 2010, the NEA published The Security of Energy Supply and the Contribution of Nuclear Energy which developed a consistent methodology for all forms of energy and electricity to deliver quantitative metrics for the security of supply.