Public understanding of science PUS is a central concept among science communicators. Public understanding of renewable energy PURE is proposed as an important sub-concept of PUS. The aim of our paper is to interest and invite renewable energy scientists to join a PURE research project. Four separate important questions for a PURE research project can be identified: (A) Is PURE important? (B) Which issues of PURE are the most important ones, according to renewable energy scientists? (C) What understanding of renewable energy has the general public today, worldwide? (D) How to achieve PURE?