In the latest edition, the report dives into two very different policy scenarios that help illustrate the choices and consequences we have ahead of us. In this post, we’ll look at each policy scenario and then dive into the associated numbers for each, showing how they affect the projected global energy mix from 2018 to 2040.
The Policy Scenarios
The IEA bases its projections based on two policy scenarios: Neither scenario is technically a forecast; the IEA sees both scenarios as being possible. However, this data can still provide a useful starting point for decision makers and investors looking to read the tea leaves. Will countries stick to their guns on their current plans, or will those plans be scrapped in the name of bolder, sustainable initiatives?
Scenario 1: Stated Policies
Today’s chart shows data corresponding to this policies scenario, as adjusted by CAPP. See the energy use data below, shown in terms of Millions of Tonnes of Oil Equivalent (Mtoe): Note: Data is based on CAPP conversion estimates, and is rounded to nearest 50 Mtoe. In the Stated Policies Scenario, oil will be the largest energy source in 2040, making up about 28% of the global energy mix — and natural gas will be right behind it, for 25% of supply. Coal consumption, which is decreasing in Western markets, will stay consistent with 2018 levels thanks to growing demand in Asia. Meanwhile, renewable energy (excl. hydro) will see an impressive renaissance, with this category (which includes wind, solar, geothermal, etc.) increasing its portion in the mix by over 300% over 22 years.
Scenario 2: Sustainable Development
The IEA’s Sustainable Development scenario is very different from the status quo, as shown here:
Source: IEA The contrast between the energy needed in the Stated Policies (STEPS) and Sustainable Development (SDS) projections is stark, going from a 2,500 Mtoe increase to a 800 Mtoe decrease in total consumption, driven by residential and transportation sectors. Under this scenario, renewable energy use for electricity consumption (incl. hydro) would need to increase by 8,000 TWh more, with ultimately more than half of it in Asia. Under this transformational and ambitious scenario, fossil fuel use would plummet. Coal consumption would drop by roughly 60%, oil consumption by 30%, and the role of natural gas in the energy mix would remain stagnant.
Two Scenarios, One Path
Both scenarios are a possibility, but in reality we will likely find ourselves somewhere in between the two extremes. This makes these two baselines a helpful place to start for both investors and decision makers. Depending on how you think governments, corporations, and organizations will act, you can then adjust the projections accordingly. on
#1: High Reliability
Nuclear power plants run 24/7 and are the most reliable source of sustainable energy. Nuclear electricity generation remains steady around the clock throughout the day, week, and year. Meanwhile, daily solar generation peaks in the afternoon when electricity demand is usually lower, and wind generation depends on wind speeds.As the use of variable solar and wind power increases globally, nuclear offers a stable and reliable backbone for a clean electricity grid.
#2: Clean Electricity
Nuclear reactors use fission to generate electricity without any greenhouse gas (GHG) emissions.Consequently, nuclear power is the cleanest energy source on a lifecycle basis, measured in CO2-equivalent emissions per gigawatt-hour (GWh) of electricity produced by a power plant over its lifetime. The lifecycle emissions from a typical nuclear power plant are 273 times lower than coal and 163 times lower than natural gas. Furthermore, nuclear is relatively less resource-intensive, allowing for lower supply chain emissions than wind and solar plants.
#3: Stable Affordability
Although nuclear plants can be expensive to build, they are cost-competitive in the long run. Most nuclear plants have an initial lifetime of around 40 years, after which they can continue operating with approved lifetime extensions. Nuclear plants with lifetime extensions are the cheapest sources of electricity in the United States, and 88 of the country’s 92 reactors have received approvals for 20-year extensions. Additionally, according to the World Nuclear Association, nuclear plants are relatively less susceptible to fuel price volatility than natural gas plants, allowing for stable costs of electricity generation.
#4: Energy Efficiency
Nuclear’s high energy return on investment (EROI) exemplifies its exceptional efficiency. EROI measures how many units of energy are returned for every unit invested in building and running a power plant, over its lifetime. According to a 2018 study by Weissbach et al., nuclear’s EROI is 75 units, making it the most efficient energy source by some distance, with hydropower ranking second at 35 units.
#5: Sustainable Innovation
New, advanced reactor designs are bypassing many of the difficulties faced by traditional nuclear plants, making nuclear power more accessible.
Small Modular Reactors (SMRs) are much smaller than conventional reactors and are modular—meaning that their components can be transported and assembled in different locations. Microreactors are smaller than SMRs and are designed to provide electricity in remote and small market areas. They can also serve as backup power sources during emergencies.
These reactor designs offer several advantages, including lower initial capital costs, portability, and increased scalability.
A Nuclear-Powered Future
Nuclear power is making a remarkable comeback as countries work to achieve climate goals and ultimately, a state of energy utopia. Besides the 423 reactors in operation worldwide, another 56 reactors are under construction, and at least 69 more are planned for construction. Some nations, like Japan, have also reversed their attitudes toward nuclear power, embracing it as a clean and reliable energy source for the future. CanAlaska is a leading exploration company in the Athabasca Basin, the Earth’s richest uranium depository. Click here to learn more now. In part 3 of the Road to Energy Utopia series, we explore the unique properties of uranium, the fuel that powers nuclear reactors.
