By Dave Morton of the Canadian Energy Reliability Council.

Maintaining energy diversity is crucial to a truly sustainable future

Canada is on an ambitious path to “decarbonize” its economy by 2050 to deliver on its political commitment to achieve net-zero greenhouse gas (GHG) emissions. Although policy varies across provinces and federally, a default policy of electrification has emerged, and the electricity industry, which in Canada is largely owned by our provincial governments, appears to be on board.

In a November 2023 submission to the federal government, Electricity Canada, an association of major electric generators and suppliers in Canada, stated: “Every credible path to Net Zero by 2050 relies on electrification of other sectors.” In a single generation, then, will clean electricity become the dominant source of energy in Canada? If so, this puts all our energy eggs in one basket. Lost in the debate seem to be considerations of energy diversity and its role in energy system reliability.

What does an electrification strategy mean for Canada? Currently, for every 100 units of energy we consume in Canada, over 40 come to us as liquid fuels like gasoline and diesel, almost 40 as gaseous fuels like natural gas and propane, and a little less than 20 in the form of electrons produced by those fuels as well as by water, uranium, wind, solar and biomass. In British Columbia, for example, the gas system delivered approximately double the energy of the electricity system.

How much electricity will we need? According to a recent Fraser Institute report, a decarbonized electricity grid by 2050 requires a doubling of electricity. This means adding the equivalent of 134 new large hydro projects like BC’s Site C, 18 nuclear facilities like Ontario’s Bruce Power Plant, or installing almost 75,000 large wind turbines on over one million hectares of land, an area nearly 14.5 times the size of the municipality of Calgary.

Is it feasible to achieve a fully decarbonized electricity grid in the next 25 years that will supply much of our energy requirements? There is a real risk of skilled labour and supply chain shortages that may be impossible to overcome, especially as many other countries are also racing towards net-zero by 2050. Even now, shortages of transformers and copper wire are impacting capital projects. The Fraser Institute report looks at the construction challenges and concludes that doing so “is likely impossible within the 2050 timeframe”.

How we get there matters a lot to our energy reliability along the way. As we put more eggs in the basket, our reliability risk increases. Pursuing electrification while not continuing to invest in our existing fossil fuel-based infrastructure risks leaving our homes and industries short of basic energy needs if we miss our electrification targets.

The IEA 2023 Roadmap to Net Zero estimates that technologies not yet available on the market will be needed to deliver 35 percent of emissions reductions needed for net zero in 2050.  It comes then as no surprise that many of the technologies needed to grow a green electric grid are not fully mature. While wind and solar, increasingly the new generation source of choice in many jurisdictions, serve as a relatively inexpensive source of electricity and play a key role in meeting expanded demand for electricity, they introduce significant challenges to grid stability and reliability that remain largely unresolved. As most people know, they only produce electricity when the wind blows and the sun shines, thereby requiring a firm back-up source of electricity generation.

Given the unpopularity of fossil fuel generation, the difficulty of building hydro and the reluctance to adopt nuclear in much of Canada, there is little in the way of firm electricity available to provide that backup. Large “utility scale” batteries may help mitigate intermittent electricity production in the short term, but these facilities too are immature. Furthermore, wind, solar and batteries, because of the way they connect to the grid don’t contribute to grid reliability in the same way the previous generation of electric generation does.

Other zero-emitting electricity generation technologies are in various stages of development – for example, Carbon Capture Utilization and Storage (CCUS) fitted to GHG emitting generation facilities can allow gas or even coal to generate firm electricity and along with Small Modular Reactors (SMRs) can provide a firm and flexible source of electricity.

What if everything can’t be electrified? In June 2024, a report commissioned by the federal government concluded that the share of overall energy supplied by electricity will need to roughly triple by 2050, increasing from the current 17 percent to between 40 and 70 percent. In this analysis, then, even a tripling of existing electricity generation, will at best only meet 70 percent of our energy needs by 2050.

Therefore, to ensure the continued supply of reliable energy, non-electrification pathways to net zero are also required. CCUS and SMR technologies currently being developed for producing electricity could potentially be used to provide thermal energy for industrial processes and even building heat; biofuels to replace gasoline, diesel and natural gas; and hydrogen to augment natural gas, along with GHG offsets and various emission trading schemes are similarly

While many of these technologies can and currently do contribute to GHG emission reductions, uncertainties remain relating to their scalability, cost and public acceptance. These uncertainties in all sectors of our energy system leaves us with the question: Is there any credible pathway to reliable net-zero energy by 2050?

Electricity Canada states: “Ensuring reliability, affordability, and sustainability is a balancing act … the energy transition is in large part policy-driven; thus, current policy preferences are uniquely impactful on the way utilities can manage the energy trilemma. The energy trilemma is often referred to colloquially as a three-legged stool, with GHG reductions only one of those legs. But the other two, reliability and affordability, are key to the success of the transition.

Policymakers should urgently consider whether any pathway exists to deliver reliable net-zero energy by 2050. If not, letting the pace of the transition be dictated by only one of those legs guarantees, at best, a wobbly stool. Matching the pace of GHG reductions with achievable measures to maintain energy diversity and reliability at prices that are affordable will be critical to setting us on a truly sustainable pathway to net zero, even if it isn’t achieved by 2050.

Dave Morton, former Chair and CEO of the British Columbia Utilities Commission (BCUC), is with the Canadian Energy Reliability Council.