The geography of the Bay of Fundy, where the tide is probably the highest in the world, is conducive to the concentration of tidal energy, and has therefore been the site of many attempts at harnessing its power. Capital costs, and not technical problems, have been the major source of failure, and are still the overriding constraint on development. After 1973, Canadian Government agencies re-examined the case for development, and great efforts have gone into researching the resource. The benefit/cost ratio in 1981 was of the order of 2.5 or 3.0 to 1, but the fluctuations of the energy market have put off any resolve to develop a large Fundy project, at least until long-term contracts for its power have been secured.