From C.R.A. Website: http://www.cra-arc.gc.ca/benefits/ecb/faq-e.html More questions about the Energy Cost Benefit: http://www.cra-arc.gc.ca/benefits/ecb/faq2-e.html Energy Cost Benefit (ECB) 1.What is the Energy Cost Benefit (ECB)? The Energy Cost Benefit is a one time tax exempt ...