No way, not by a long shot.
You may get the efficiency from the boiler alone, but the overall plant efficiency, energy into the plant versus energy deliveried to the customers is going to be around 30~35%.
http://web.mit.edu/mitei/docs/reports/beer-emissions.pdf
Specialized plants today can reach into the 40's of efficiency, but you still have transmission/distribution losses to get the electricity to the consumer.
You need to re read what you responded to.