Today, the federal government announced a $500–million package of aid and regulations to encourage the use of biofuels like ethanol in gasoline products sold in Canada.
From that press release:
“The new federal regulations will require enough renewable fuel to reduce greenhouse gas (GHG) emissions by about 4 megatonnes per year, the GHG equivalent of taking almost one million vehicles from the road. Grain-based ethanol results in life-cycle GHG emission reductions of 30-40% compared to gasoline, and biodiesel made from oil seeds results in life-cycle GHG emission reductions of over 60% compared to conventional diesel. Next-generation renewable fuels, such as cellulosic ethanol, are expected to provide even greater environmental benefits – up to 100% GHG reductions on a life-cycle basis. Life-cycle values account for all GHG emissions resulting from the production of the organic material, fuel production and distribution.”
The most recent data from Statistics Canada (Table 153–0034) shows that, in 2002, Canada generated 682 megatonnes (682,119 kilotonnes) of greenhouse gas emissions (GGE). A program which reduced Canada’s GGEs by 4 megatonnes would trim Canada’s overall emissions by about 0.6 per cent. At a recent press briefing, Environment Canada officials said GGEs emitted from all sources in Canada totalled 754 megatonnes in 2003. Trimming 4 megatonnes off that number would reduce GGEs by 0.5 per cent.
To meet its 2010 Kyoto target of 546 megatonnes of greenhouse gas emissions, Canada must reduced its 2003 GGE levels by 207 megatonnes or 28 per cent.
The government says removing 4 megatonnes of greenhouse gas emissions is the equivalent of taking one million cars off the road. Here are some other comparisons (all of this data comes from Statscan):
- Electric power generation, transmission and distribution accounted for 123 megatonnes of GGE’s in 2002, making the electricity business the single largest GGE emitter. Oil and gas extraction was number two at 99 megatonnes, and crop and animal production was number three at 69 megatonnes.
- In 2002, Canada’s airlines produced about 13.5 megatonnes of GGE.
- Canada’s pulp, paper and paperboad manufacturers generated 9.3 megatonnes in 2002.
- Natural gas distribution, water and operators of other similar distribution systems created about 4 megatonnes of GGEs.
- The combined GGEs of everyhousehold in Canada in 2002 was 111 megatonnes.
Last June, when Ottawa announced its intention to move towards increasing use of ethanol, I interviewed Deniz Karman, a Carleton University engineering professor, about using ethanol to cut down on greenhouse gases. “It can be part of a solution. I can't see it being a significant part of the solution,” he said. Karman says the broad adoption of ethanol-based fuel might trim greenhouse gas emissions from driving by between two and four per cent. Other simple steps, such as frequent changing of your car’s air filter, can have a bigger impact.
“There are much more significant things you could be doing about your driving than fueling up with ethanol if the intent is to reduce greenhouse gas emissions.” Karman said. “You could be driving a car with better fuel economy. You're going to get much much better than two to four per cent reduction in your greenhouse gas emissions.”