Copenhagen, Denmark’s capital, passed a carbon-neutral plan two years ago to achieve zero-carbon by 2025. Toward that end, three wind turbines recently went on line in a Copenhagen neighborhood, with plans to add 97 more citywide. Currently, wind power makes up 33% of Denmark’s energy supply, the target is 50% by 2020. Much of that wind power comes from off-shore wind. The plan calls for smaller, urban-based turbines. To gain approval, the city is selling turbine shares, each representing 1,000 kWh per year. Considering that a standard Copenhagen household consumes 3,500 kWh per year, four shares would enable the house to achieve carbon neutrality for electricity. To date, 500 residents have bought 2,500 shares. Click here to read more