McKinsey Puts $773 Billion of a $1.5 Trillion Clean Energy Gap in Efficiency Spending
McKinsey's 1 September analysis assigns more than half of a $1.5 trillion clean energy shortfall to efficiency and end-use, outpacing grid and storage combined.
McKinsey allocated $773 billion, more than half of a $1.5 trillion clean energy investment shortfall, to efficiency and end-use applications in an analysis published 1 September 2026. Grid upgrades and storage claimed the remaining $479 billion. No portion of the gap was assigned to new generation capacity, a framing that diverges sharply from where most energy equity and credit markets have been focused. Global shipping of clean energy products reached $479 billion in 2025, growing just 1% year on year, BloombergNEF data show.3
Battery storage is where near-term deployment momentum is most visible. Global BESS installed capacity is projected to grow sixfold between 2025 and 2030, at a compound annual growth rate of 42%. China and the United States held 74.6% of global installed BESS capacity in 2025, concentrating technology development and procurement power in two markets and leaving most of the world dependent on their supply.5
Demand growth is compressing the timeline for grid adaptation. U.S. data centers account for 45% of global data center electricity consumption, with load projected to climb by nearly 240 terawatt hours (a 130% increase), according to Persistence Market Research. Forty-one percent of utilities report achieving fully integrated AI and analytics systems ahead of schedule, with Siemens and ABB among those scaling the platforms.2
Policy is moving in the same direction, though financing structures lag. The EU has set a 46% electrification target by 2040. Brussels projects that achieving it would cut oil and gas import costs by €260 billion per year, arithmetic that makes the efficiency investment case compelling on paper without resolving who provides the capital or on what terms.4
The household cost channel adds pressure from below. EDF warned on 25 August 2026 that average dual-fuel bills in the UK could be 13% higher by 2030 relative to fourth-quarter 2025 levels if government tax support is not extended. Higher end-user costs strengthen the economic case for efficiency retrofits. But they also erode the disposable income available to fund them.6
The structural shift behind all of this runs long. Electricity's share of global final energy could climb from roughly 23% to over 50% by 2050, according to analysis published by Asian Power on 21 May 2026. Most of that gain comes not from additional generation but from converting demand currently served by liquid fuels and gas. That conversion is the territory McKinsey's $773 billion is meant to address.1
The AI energy management segment shows where near-term commercial capital is concentrating. Revenues are forecast to reach $42.7 billion by 2033, Persistence Market Research projects. East Asia holds roughly 22% of current global market share and is the fastest-growing region, driven by industrial digitization across China, Japan and South Korea. China's data center electricity demand alone is projected to grow by 175 terawatt hours (a 170% increase), adding load to grids that already account for 25% of global data center consumption.2
The difficulty with McKinsey's efficiency allocation is one of project finance. Efficiency spending is diffuse, spread across building retrofits, industrial processes and transport electrification, and harder to structure at the scale of a contracted offshore wind farm or a utility-scale BESS agreement. Whether governments extend consumer bill support, as EDF is pushing for in the UK, or redirect fiscal headroom toward retrofit incentives shapes how much of the gap actually closes before 2030.6