Last year, on a global basis, more net power generating capacity was added through renewable sources than via all other power sources combined. Which countries are leading this charge, and what power sources are being adopted the fastest? Today’s infographic comes to us Raconteur, and it breaks down various metrics around energy investment. The graphic looks at absolute and per capita power consumption by countries, as well as dollars being invested into each particular type of green energy.
Country Comparisons
The two countries that lead the pack in absolute terms are China and the United States. In 2016, China consumed the equivalent of 349.2 million tonnes of oil in renewable energy, while the U.S. was at 143 million tonnes. However, these numbers are very skewed by the large populations of these countries. In percentage terms, China only gets 11.4% of its primary energy from renewables, while the U.S. gets 6.3% of its mix from sources like solar and wind. On a per capita basis, major economies leading the world include countries like Norway, Canada, Sweden, Brazil, and Austria – all of these countries get about 30% or more of their primary energy from renewables. That said, it is also worth noting that hydropower makes up a large degree of the energy mixes for many of these places.
Clean Investments
2016 was a landmark year for clean energy, with net power capacity additions for renewables topping the list: Importantly, more green power is being added at lower costs. Below, you can see that the level of investment is actually falling, as utilities get more “bang for the buck” on new capacity added. Here is the overall investment for each renewable category in 2016: In 2016, investment in clean energy fell by 18% – however, 138 GW of new power capacity came online from renewable sources (excl. large hydro), which is 11 GW more than in the previous year. If costs continue to fall, it will mean more accessible clean energy for any country that wants it – and cost efficiency will also make the race to add capacity via renewables much more meaningful and sustainable in the long term. 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.
