Yes electric baseboard heat and any other form of electric heat such as electric space heaters are very efficient.
Since all the electric incoming to the baseboard heater is transformed into heat and no electric is wasted.
Electric baseboard heat is very efficient but also very costly to heat your home and I wouldn't rely on just electric baseboard heat since in the event of a power outage you will be without heat.
I would get a vent free or vented wall natural gas heater for use as a backup heat source or if you want to you can get a wood stove installed and use it to heat your home in an emergency or use the wood stove as a sole heat source if you can get enough wood to heat your home with.