A new report by the Danish Energy Agency has found it would be technically possible to construct a secure and reliable national energy system based on 100 per cent renewables by 2050.
The report, Energy Scenarios for 2020, 2035 and 2050, compares the feasibility and cost of replacing coal, oil and natural gas with various different green energy scenarios, ranging from an electricity-based wind-power system to a fuel-based biomass system.
According to the report, all of the scenarios meet the vision of a fossil fuel independent energy system for Denmark by 2050, as well as the government's goal of fossil fuel independent electricity and heating by 2035.
To meet the 2050 target, however, the report notes that a decision on the shape of Denmark's energy future would need to be made shortly after 2020.
In the wind scenario, the report finds estimated that wind power capacity would have to be expanded by around one 400MW offshore wind farm a year from 2020 to 2050, while obsolete turbines would have to be replaced.
All of the scenarios assume 'large' energy savings, says the DEA. "Extra-large energy savings will lead to an increase in total costs in the wind scenario."
Consumption of natural gas was expected to fall dramatically from 2020, as coal and natural gas were phased out and the country's gas infrastructure was instead to distribute renewable=energy gases like biogas.
Electricity storage is not included in the Danish scenarios, the DEA finding that use of the electricity market - including hydropower storage facilities abroad - and flexible electricity consumption were cheaper solutions.
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