Réduire les émissions de carbone coûterait trop cher ? Il est temps alors de se rappeler les coûts découlant des changements climatiques.
In a nutshell: the cost of climate change in Canada is already big and growing, with the potential to become enormous.
Let’s start with extreme weather.
The Insurance Bureau of Canada publishes a set of statistics each year. In its 2016 assessment, the Bureau noted that it has been “reporting on a rise in claims as a result of increases in severe weather events related to climate change” for over a decade.
That’s because they’ve tracked a sharp rise in the costs of “catastrophic” disasters, meaning those that carry a price tag of $25 million or more.
From 1983 to 2004, insured losses from those disasters averaged $373 million a year (in 2015 dollars).
But in the decade from 2005 to 2015, the annual average loss has more than tripled, growing to $1.2 billion a year.
The federal government offers a kind of insurance of its own through a fund called the Disaster Financial Assistance Arrangements program, which helps provinces and territories recover from natural disasters. That fund has seen the same sharp uptick in payouts that private insurers have noted, with payments growing from an average yearly payout of about $12 million from 1970 to 1994, to an average of $163 million from 1995 to 2004, and then to an average of $373 million between 2005 to 2015.
The result? Over the past six years, that fund has paid out more — nearly $1 billon dollars more, in fact — than it did over its first 39 years of operation.
The Commissioner of the Environment and Sustainable Development summed it up this way: “severe weather events have resulted in rising costs to governments at all levels and, by extension, to all Canadians.”
She’s right, of course, but some Canadians have felt those losses more directly than others, and not just those who have faced the stress and cost of rebuilding after wildfires or floods.
The direct costs are also being paid by Canadians working in sectors like agriculture, forestry and mining, as an authoritative 2014 assessment makes clear.
In March 2012, for example, a heat wave in Ontario caused fruit trees to blossom five weeks earlier than usual, and then frosts in April destroyed approximately 80 percent of apple blossoms. Total losses for tender fruits that year were estimated at $100 million.
In the forestry sector, warmer winter temperatures linked to climate change is the major factor contributing to the outbreak of the mountain pine beetle in Western Canada, which by 2012 had reduced the economic value of over 18 million hectares of Canadian forest. These impacts contributed to mill closures and lost jobs.
And in the North, thinner ice and shorter winters have limited the use of ice roads, resulting in higher costs for industries and communities. The warmer winter of 2006 cost the Diavik diamond mine an extra $11 million, as it had to fly in 15 million litres of fuel instead of driving it in over ice roads.
The potential costs grow as we look ahead. And while some of these costs are already unavoidable, making adaptation to climate change a necessity, the level of risk we face depends on how quickly and deeply we cut carbon pollution.
In 2011, the National Round Table on the Economy and the Environment (NRT) calculated that the cost of climate change for Canada could grow to between $21 to $43 billion a year by 2050 — roughly 1 percent of GDP that year.
That’s the average estimate, but the report notes that “there is a risk those costs could be not just higher, but much higher”: the model found a 5 percent chance that the economic cost to Canada in 2050 could be greater than $91 billion.
The NRT’s analysis also looked at health care costs. Because it leads to warmer summers and poorer air quality, climate change will result in earlier deaths and more illnesses in Canada’s cities. In Toronto alone, these costs could be between $3 million and $11 million a year by the 2050s.
We could list even more big numbers, but the real point is this: there are no zero-cost options.
We can choose the potential cost of taking action to curb our pollution ahead of the United States — although there are very good reasons to believe that clean energy will continue out-competing power from fossil fuels in the US, even under President Donald Trump.
If we go that route, there are plenty of smart, effective policies to choose from — including some that are already in effect in Canadian provinces today — that will spur innovation and clean growth while cutting carbon pollution.
Or we can choose the far larger, far riskier consequences of climate change itself.
It’s pretty clear which choice offers the better return on investment.
Photo: Zeljko Radojko/Shutterstock.com
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