Below you will find the queries I ran in order to make the buffers around the wind turbine points and also to show the sites within these buffers.
SELECT cartodb_id, ST_Transform(ST_Buffer(the_geom::geography,10000)::geometry, 3857) as the_geom_webmercator FROM ie_windfarms_osm
SELECT cartodb_id, ST_Transform(ST_Buffer(the_geom::geography,5000)::geometry, 3857) as the_geom_webmercator FROM ie_windfarms_osm