This suggests that regulators could continue to be concerned with supply adequacy more than with flexibility. As discussed previously, creating a market platform for flexibility could be sufficient in order to bring together solutions such as flexibility from nuclear or coal plants, pumped storage, demand-side positive response (water heating) and curtailment of variable generation, as well as other technical solutions in order to develop least cost flexibility solutions. There are many options and liberalisation is still a work in progress. While pure economic analysis would probably lead to prescribing an ideal solution, the approach adopted here aims to reflect real life circumstances and to identify situations under which one option might be preferable.