Recently we changed to an electricity plan at our energy provider that is 100% wind power (Energi Fyn - NaturEl). The cost difference from our previous plan was comparably small (41 vs 37 øre/kWh), while this significantly reduces emissions.
While I disagree with calling the wind power plan emission free as Energi Fyn does (since production and maintenance for wind turbines should be incorporated into this value), average co2 emission levels of offshore wind power is denoted as 12g/kWh on Wikipedia - so are still pretty low.
Thus, assuming that Energi Fyn mostly uses offshore wind parks with a technological level causing median levels of emission, this still corresponds to a highly significant decrease in caused co2 emissions per kWh from 383g (our previous plan) to just 12g.