Jag vet inte hur det ser ut för ett isolerat fall som Sverige, men vågenergi kan täcka 50% världens energiförbrukning. "And then there are the rather unknown mediums of Tidal and Wave Power. Tidal power is derived from Tidal shifts in the ocean. Installing turbines, which capture this movement, generates energy. In the United Kingdom, 42 sites are currently noted as available, forecasting that 34% of all the UK's energy could come form tidal power alone. Wave power, which extracts energy from the surface motions of the ocean, is estimated to have a global potential of up to 80,000 TWh a year, This means 50% of the entire planet's energy usage could be produced from this medium alone." - Zeitgeist: Addendum