The global economy is witnessing a radical shift from reliance on burning fossil fuels to a system driven by clean electricity and high-efficiency technologies. However, a new technical and strategic challenge is emerging: simply increasing electricity consumption (electrification) is not enough to ensure a sustainable future. This transition must be done in a "better" and more efficient way to ensure economic viability and grid stability.
The Current Landscape: A Gap Between Ambition and Reality
Despite the notable acceleration, electricity still covers only about 20% of total final energy use globally. The road transport sector emerges as the most advanced area, with electric vehicle sales having risen by nearly 600% since 2020, now accounting for more than a quarter of all new cars sold.
The pace of this transition varies significantly geographically; China leads the scene with electricity covering nearly 30% of final energy use, compared to about 22% in the United States and 21% in the European Union. To achieve climate goals and limit temperature rise to 1.5 degrees Celsius, estimates indicate that the share of electricity must reach more than 50% of energy use by mid-century, with 90% of this electricity needing to come from renewable sources.
The Efficiency Paradox: Higher Electricity Consumption Means Lower Total Energy
One of the technical paradoxes in the electrification process is that electricity consumption may rise while total energy consumption falls. This is due to the massive differences in efficiency between traditional engines and electric motors:
- Internal combustion engines: Waste up to 80% of fuel energy as heat, converting only 20% into motion.
- Electric motors: Convert about 80% of electrical energy into effective motion.
- Heat pumps: Outperform others with their ability to extract heat from the air or ground, providing multiple thermal units for every unit of electricity consumed.
This means that households and factories may pay higher electricity bills, but total energy costs (including fuel) will decrease significantly as a result of high efficiency.
Challenges of Hard-to-Abate Sectors and Smart Grids
The slogan "electrify everything" cannot be applied literally; there are sectors that are difficult to convert directly to electricity, such as steel manufacturing, chemical production, aviation, and maritime shipping. These sectors require extreme temperatures or raw materials that cannot be provided by electricity alone, making alternatives like hydrogen or synthetic fuels an indispensable technical necessity.
Furthermore, this transition imposes immense pressure on electrical grids. The challenge is not just in generating energy, but in coordinating demand; that is, ensuring vehicles are charged and industrial equipment is operated at times when the grid is under less pressure and renewable energy is more available.
What is Changing Practically?
For users and companies, electrification does not just mean changing the type of fuel, but rather a change in the user experience and costs:
- Economic viability: The benefit depends on infrastructure; well-insulated buildings and areas with smart charging grids are the most benefited.
- Energy security: The transition reduces reliance on the volatility of global fossil fuel markets.
- Public health: Replacing diesel and gas engines with electric motors directly improves air quality in cities.