The energy transition, while critical, faces significant challenges and requires a multifaceted approach rather than a single solution. The MIT Climate Project highlights the immense scale of carbon sequestration needed to address existing and ongoing emissions, estimating that capturing and storing nearly 20 billion tonnes of current emissions is necessary, a volume far exceeding current capabilities. This underscores the importance of preventing emissions in the first place.
Global electricity demand surged by 4.3% in 2024, contributing to a 2.2% growth in overall energy demand. This increase was driven by record temperatures boosting cooling needs, industrial consumption, transport electrification, and data center growth. While higher electricity usage can be positive in climate-aligned scenarios, fossil fuels still account for 60% of generation and 36% of energy-related emissions. Analysts agree that transitioning to renewable generation, supported by battery storage and improved energy efficiency, is crucial. The International Energy Agency (IEA) projects renewable generation to grow 2.7 times between 2022 and 2030, increasing renewables' share from 30% to 46%, primarily from solar and wind. However, this is still short of the three-fold growth needed to meet net-zero targets set at COP28.
Energy efficiency is a key component, with the Rocky Mountain Institute noting that almost two-thirds of primary energy in the fossil fuel system is wasted, representing $4.5 trillion or 5% of global GDP. Despite the need, green finance remains small, reaching $8 trillion in 2024, a fraction of the $250 trillion global credit and equity markets. This market grew by 17% from 2023 but faced "intensified headwinds and growing investor caution," according to the UN Conference on Trade and Development (UNCTAD). The Energy Transitions Commission estimates an annual capital investment of $3.5 trillion is needed until 2050 to achieve a net-zero economy, with $500 billion potentially coming from reduced fossil fuel funding, a goal increasingly seen as unlikely.
The consensus among experts, including KPMG and Frontier Economics, is that a "one-size-fits-all" energy policy is no longer viable. While large-scale renewable deployment has been effective in reducing costs for electricity generation, similar mass rollouts for other sectors like heavy transport, industry, or firming electricity supplies may not be as straightforward or low-regret. These sectors present more diverse technological landscapes, and financial incentives alone may not suffice. Policymakers must consider behavioral interventions, coordinate across multiple actors (e.g., charging infrastructure for EVs, infrastructure upgrades for hydrogen), and address supply chain barriers like skills gaps. Governments need to set clear, year-by-year timelines and plans to avoid recurring supply disruptions and price rises, as current investment in transitional fuels, nuclear, and storage is insufficient, partly due to investor withdrawal from fossil fuels without corresponding investment in alternatives. For example, US and EU green energy initiatives, totaling over $1 trillion, allocate less than half directly to energy provision, with most going to tax credits.
