Clean tech is Canada's fastest-growing industry and perhaps its best-kept secret. According to Ottawa-based Analytica Advisors, which tracks and benchmarks the space, clean tech currently consists of about 700 companies in Canada, employing 41,000 people and generating $11.3-billion annually. Most of these companies are exporters, with 52% of sales outside of Canada and 42% outside of

Canada's best-kept secret: 14 cool and innovative clean-tech companies