This Roadmap is our first attempt to map out how the ocean energy sector in Ireland could look in 2050. Since so much is uncertain at this early stage, we have mapped two scenarios that show a range of outcomes that are possible. But they also clearly show that huge success is indeed possible. The Roadmap is based on a number of economic and technical assumptions that can of course be debated. The main purpose of the Roadmap is to stimulate such debate.