They’re doing it in Edmonton with Enerkem, which is turning sorted municipal solid waste into ethanol. They’re doing it in Ottawa with Plasco Energy, which is turning residual municipal waste into syngas that’s used for generating electricity. Trash giant Waste Management, an investor in Enerkem, has been investing heavily in technologies that can cleanly convert waste into useful chemicals and fuels in a safe way that releases virtually no emissions into the atmosphere — at least not, obviously, until any end fuel product is burned. But this fuel product would be displacing a fossil fuel using materials that might otherwise degrade in a landfill and release methane or contaminate groundwater.

This is an area where I part with many of my friends in the environmental community, and believe me, I’ve had my share of debates over a beer. But the landfill option is not better, in my view, and while I fully support waste diversion programs I don’t believe we can ever get to 100 per cent diversion. There’s a lot of wood waste, clothing, unrecyclable plastics, and even certain paper and plastic products can only be recycled so many times. What happens with this garbage? Advanced energy-from-waste technologies, like those being built by Enerkem and Plasco, can help municipalities manage their waste in their own back yard and get a source of energy in return.

I’m not saying we should drink the Kool-Aid, no questions asked. But at the same time, I’m a believer that the technology has changed over the years, the economics have improved, and some systems being piloted and built for commercial use today are dramatically different than the dirty incinerators built in the 1970s. Skepticism is fine, and encouraged, but not when it’s accompanied by outright dismissal or repeated attempts to compare today’s technology with what stirred up controversy 20 years ago.

It’s a conversation Toronto needs to have.

Plasco chairman and CEO Rod Bryden called the latest investment in the company “a remarkable expression of confidence.” The company is targeting its efforts at North America, Europe and China. It has two pilot facilities already — a 100-tonne-per-day plant in Ottawa and a much smaller plant in Spain — but a 300 tonne-per-day facility is in the works in Red Deer, Alberta, and is expected to be completed in 2012. One can only assume that the Ottawa facility has worked out its kinks, otherwise I can’t see any responsible investor throwing down $100 million to pursue commercial projects.

This is good news for Plasco and another shot of confidence in the emerging market for new energy-from-waste technologies. Montreal-based Enerkem is another Canadian company riding this wave with its ethanol-from-waste systems, having recently raised nearly $54 million from Waste Management and a number of venture capital firms. Don Roberts, vice-chair of CIBC World Market’s clean technology and green energy team, recently told me that energy-from-waste was one of three main areas to watch over the coming years, along with energy efficiency and water. He may be right.

It will be interesting to see how Alter NRG’s technology and approach compares with that of Plasco Energy, which is operating a pilot waste-to-energy facility in Ottawa and has had more than its share of problems over the past couple of years. Alter NRG, I should point out, is the company that purchased geoexchange development company Clean Energy Developments two weeks ago.