Sweden has been arduously eliminating fossil fuels since the oil crisis in the 1970's. Several years ago I went on a study tour to Sweden and Denmark where I learned of their sustainability initiatives. (You can read an article about my trip here: https://www.sustainabilityprofessionals.org/sites/default/files/ISSP%20Denmark-Sweden_0.pdf.)
In addition to having wind and solar, Denmark is so serious about biking that they clear snow off bike lanes before the roadway. (In the US, that's where snow plows pile the snow.) Sweden uses district heating where waste heat from industrial processes or waste-to-energy plants is sent to commercial and residential buildings. Passivhaus (different from passive solar) building techniques are so efficient they don't need a heating system.
So Sweden has announced with confidence that they can eliminate their greenhouse gases (presumably from fossil fuels vs other sources) by 2045. http://sustainability.thomsonreuters.com/2017/02/07/sweden-sets-goal-to-phase-out-greenhouse-gas-emissions-by-2045/