The global energy transition is facing a critical structural bottleneck, with renewable energy accounting for just 15 percent of total final energy consumption despite record investment, deployment and policy support, according to a new report from global renewable energy network REN21.
The inaugural Renewables-Based Economy (RBE) Tracker 2026 argues that measuring success through renewable power installations alone masks a deeper challenge: the world is adding clean energy capacity at unprecedented rates, yet fossil fuels continue to dominate the broader economy.
The report finds that renewable electricity now supplies about one-third of global power generation and that renewable power capacity reached 5,655 gigawatts in 2025. However, transport, industry, buildings and agriculture remain heavily dependent on fossil fuels, limiting the economic and environmental impact of the transition.
“While the power sector is leading the transition, renewable electricity expansion alone is not yet sufficient to drive system-wide transformation,” the report states.
Global investment in renewable energy reached $690 billion in 2025, while spending on electrified transport climbed to $893 billion and power grid investment rose to $483 billion.
Solar photovoltaic capacity alone expanded to nearly 2,900 GW, accounting for the majority of new renewable additions.
Yet the report concludes that these investments have not translated into a fundamental restructuring of global energy consumption.
Renewables account for only:
- 15% of total final energy consumption globally
- 19% of industrial energy demand
- 18% of building energy demand
- 20% of agricultural energy demand
- Just 5% of transport energy demand
Meanwhile fossil fuels still account for around 80 percent of final energy use worldwide.
The findings underscore what analysts increasingly describe as the difference between an electricity transition and an economy-wide energy transition.
Grid constraints emerging as major investment risk
The report identifies infrastructure bottlenecks as one of the largest threats to the pace of renewable deployment.
More than 2,500 GW of renewable energy and storage projects are currently awaiting grid connection worldwide, including approximately 1,600 GW of renewable generation projects and 650 GW of battery storage capacity.
The growing backlog indicates grid development is failing to keep pace with renewable deployment.
For investors, this raises concerns about project delays, stranded capital and slower-than-expected returns from renewable energy assets.
“Grid infrastructure, storage deployment and system flexibility are often not expanding at the same pace as generation capacity,” the report notes.
China dominates global clean energy expansion
The report also highlights an increasingly concentrated renewable energy supply chain.
China accounted for 53 percent of global renewable power additions in 2025, including half of all solar photovoltaic expansion and nearly three-quarters of new wind installations.
While the dominance has accelerated global deployment through lower technology costs, it has also created new geopolitical and industrial policy concerns around supply chain resilience and manufacturing concentration.
The report warns that future energy security will increasingly depend not only on fuel supplies but also on access to renewable technologies, critical minerals and industrial manufacturing capacity.
Despite global commitments to decarbonisation, fossil fuels continue to enjoy stronger financial support than renewable energy.
According to the report, direct fossil fuel subsidies remain approximately three times higher than subsidies for renewables, raising questions about policy alignment with climate objectives.
At the same time, energy-related carbon emissions have risen by 15 percent since 2010, indicating that renewable deployment is not yet occurring at sufficient scale to offset growing global energy demand.
One of the report’s more optimistic findings is the growing link between renewable energy and national energy security.
The analysis shows that 92 countries remain net energy importers, exposing them to fuel price shocks, geopolitical disruptions and supply chain risks.
As renewable energy resources are more widely distributed geographically than fossil fuels, REN21 argues that accelerating domestic renewable deployment could strengthen long-term economic resilience while reducing exposure to volatile global energy markets.
The report highlights major gaps in global energy transition data.
It noted that areas such as renewable supply chains, job quality, economic value creation, system flexibility, regional interconnections and critical mineral dependencies remain poorly tracked.
REN21 argues that policymakers are increasingly attempting to manage a complex economic transformation without adequate metrics to measure progress.
The report calls for a shift away from focusing exclusively on renewable capacity additions toward assessing whether renewable energy is creating broader economic, social and industrial change.
