1 Renewable energy

2 Renewable energy sources Sun Wind Hydro Wave Tidal Osmosis Geo thermal Biofuel

3 World Marketed Energy Consumption

4 ENERGY PRODUCTION IN THE WORLD Energy [mill. Tons oil eq. per year] HydroNuclear Natural gas OilCoal Bio mass

5 Predicted Power Generation from Other Renewables World - Reference and Alternative Policy Scenario TWh Source: IEA 2006

6 EU - Predicted Power Generation Reference and Alternative Policy Scenario Source: IEA 2006 TWh O. Ren. = Other Renewables Reference Scenario 2030 Alternative Policy Scenario Sum: Ref TWh Alt TWh Sum: 2004: 3155 TWh

7 EU - Predicted Power Generation from Other Renewables Reference and Alternative Policy Scenario TWh Source: IEA 2006

8 Source: Annual incoming solar energy: J

9 Sun energy potential Source:

10 Wind power and energy Power output from wind turbines: Energy production from wind turbines: C A

11 The world’s energy potential for land based wind turbines Estimated energy output in kWh/kW from a wind turbine that are dimensioned for 11 m/s

12 Global Installed wind power

13 Source: Installed wind power

14 Wind power capacity global forecast

15 Hydro power

16 Total electricity production in the world Total electricity production: TWh/year (2005) –Hydro : 19 % –Nuclear : 16 % –Coal:40 % –Natural Gas: 15 % –Oil:10 % Norway: –99% energy production from hydro power with an installed power of MW source:

17 Hydro power in the world Energy production : TWh/year Installed capacity: MW Total potential: TWh/year Technical potential: TWh/year Economical and technical potential : TWh/year Hydro power potential in the world source:

18 Wave power potential The numbers denotes power per meter wave front [kW/m]

19 Power potential from waves a Group Velocity c g [kW/m]

20 EC105 TWh –UK50 TWh –France40 TWh World ? Energy potential in the tidal currents

21 EC tidal current sites

22 Source:

23 Source: Energy potential in the tidal currents

24 Prinsippet ved saltkraftverk kalles trykkretardert osmose (TRO) og går ut på å utnytte energien som frigjøres når salt og ferskvann blandes. Dette skjer ved at de tilføres i hvert sitt kammer i et kar adskilt av en membran (se fig). Membranen tillater gjennomstrømning av ferskvann, men ikke saltvann. Det ferske vannet vil da strømme gjennom til den andre siden, og energien i denne strømmen kan tappes ved hjelp av en turbin. Det er det osmotiske trykket mellom ferskvann og saltvann som sørger for at det opprettholdes en strømning gjennom membranen. Det osmotiske trykket er maksimalt 27 bar. Saltkraft Norges energi potensial er 50 TWh Kilde:

25 Geothermal energy The estimated amount of total heat flowing from the Earth's interior is equivalent to 42 terawatts

26 Geothermal energy in the world Energy –38 TWh electricity production –34 TWh heat production Installed power: –8.912 MW for electricity production – MW for heat production Source: Renewable energy (Renew. energy) ISSN

27 Bio Fuel

28Gas-turbine Steam-turbine Motor Generator Barbeque Metalurgical industry MotorBoilerWoodstove District heating Electricity Fuel CharcoalBio-oil Combustible gas Heat Thermochemical Conversion Technolgies PyrolysisGasificationCombustion

29 Bio Fuel in Norway Theoretical energy potential in Norway:415 TWh Technical energy potential in Norway:35 TWh Energy production from bio fuel in Norway today: –7,5 TWh in private homes –7,5 TWh in the industry