What are the main strategies of energy transition toward decarbonization?

• A. Expand renewables, improve energy efficiency, electrify transport, phase out fossil subsidies, and implement carbon pricing
• B. Increase fossil subsidies and maintain status quo
• C. Ignore efficiency gains
• D. Abandon renewables altogether

Answer: (A)

The central idea is that decarbonizing the energy system requires a coordinated shift in both supply and demand, with clear economic incentives. Expanding renewables and other clean power replaces high-emission energy sources with low- or zero-emission ones, making the electricity backbone cleaner. Improving energy efficiency lowers the amount of energy we need to meet demand, reducing overall emissions without sacrificing activity or comfort. Electrifying transport—moving cars, buses, and trucks to run on electricity—directly cuts fossil fuel use in one of the largest emission sectors. Phasing out subsidies for fossil fuels removes policy biases that keep dirty energy cheaper than clean options, while carbon pricing — through taxes or cap-and-trade — sends a concrete price signal that rewards low-carbon choices and investments. Together, these elements address both how energy is produced and how it is used, creating a practical, synergistic path toward lower emissions.

Other approaches that rely on subsidizing fossil fuels, maintaining the status quo, ignoring efficiency gains, or abandoning renewables fail to reduce emissions effectively and overlook the beneficial interactions between cleaner energy, smarter use, and economic incentives.