Renewables Saved $480bn in Fossil Fuel Costs in 2025

Global renewable energy cuts fossil fuel spending by $480 billion

The world saved $480 billion in fossil fuel costs during 2025, according to new analysis from the International Renewable Energy Agency. The savings came as solar and wind capacity continued to displace coal and gas generation across major economies.

IRENA’s Renewable Power Generation Costs in 2025 report shows these savings arrived alongside a reduction of 8.4 gigatonnes in carbon emissions. For UK businesses tracking energy costs and supply chain stability, the findings confirm a structural shift in how the global economy powers itself.

More than 90% of new renewable capacity installed last year generated electricity more cheaply than the least expensive fossil fuel alternative. That cost advantage is widening, not narrowing. Consequently, renewable energy now functions as both an environmental measure and a commercial buffer against price volatility.

The scale of these savings reflects genuine economic impact rather than theoretical potential. China accounted for $177 billion of the total, while the United States saved $35 billion. Brazil, India, Germany and Japan each recorded savings between $15 billion and $32 billion.

Renewable capacity additions reach 690 gigawatts globally

Global renewable capacity additions exceeded 690 gigawatts in 2025. Solar photovoltaic installations led the expansion, followed by wind projects. Both technologies surpassed previous annual growth rates.

This capacity growth occurred across diverse markets and regulatory environments. Therefore, the expansion demonstrates commercial viability rather than dependence on subsidy regimes in specific regions. Installations took place in countries with varying grid infrastructure, energy demand profiles and policy frameworks.

The additions brought installed renewable capacity to levels where the existing fleet actively shields economies from fuel price shocks. During gas price spikes, solar and wind generation reduced exposure to volatile commodity markets. This protection benefited both electricity consumers and businesses managing energy procurement.

Hybrid systems combining solar or wind with battery storage delivered round-the-clock power in prime locations. Firm solar-plus-storage costs fell to between $54 and $82 per megawatt-hour in 2025. In 2020, the same configurations cost over $100 per megawatt-hour.

These cost reductions enable renewable systems to provide baseload power without fossil fuel backup. For manufacturers and facilities requiring continuous electricity supply, the technical and commercial case for renewables has strengthened significantly. Battery costs continue to fall, further improving the economics of firm renewable power.

UK businesses with international operations or supply chains spanning multiple countries now encounter renewable electricity as the default option in most markets. This shift affects everything from site selection decisions to long-term power purchase agreements.

Fossil fuel generation records first structural decline

Fossil fuel electricity generation fell by 0.2% in 2025. According to analysis from Ember, this represents the first time fossil generation has declined due to clean power growth rather than economic crisis. Previous reductions occurred during recessions or demand shocks, not structural market changes.

The decline signals a permanent shift in the energy mix. Renewable capacity is now growing faster than electricity demand in many regions. As a result, fossil fuel plants face displacement even when total power consumption increases.

This trend carries specific implications for UK manufacturers and businesses with energy-intensive operations. Electricity grids increasingly favour low-cost renewable generation over fossil fuel alternatives. Consequently, power purchase agreements and grid connection strategies need to account for this changing supply mix.

Companies tendering for public sector contracts already face carbon reporting requirements under PPN 06/21. The global shift away from fossil generation reinforces the commercial logic behind carbon reduction programs that align with grid decarbonisation. Businesses can now reduce emissions while accessing cheaper electricity.

Meanwhile, the cost advantage of renewables continues to widen. IRENA projects that renewable power costs will keep falling through 2035. Firm solar-plus-storage systems are expected to reach below $50 per megawatt-hour at the best sites by 2035. This creates a growing price gap between new renewable capacity and new fossil fuel plants.

For businesses planning capital investments or long-term facilities, these cost projections matter. Energy expenses represent a significant operational cost for many SMEs. Therefore, infrastructure decisions made today will determine exposure to either declining renewable costs or volatile fossil fuel prices over the next decade.

China and the United States lead absolute savings figures

China’s $177 billion in fossil fuel savings reflects both its enormous electricity demand and rapid renewable deployment. The country added more solar and wind capacity than any other nation in 2025. However, the savings also demonstrate how quickly cost advantages translate into economic value at scale.

The United States recorded $35 billion in savings despite adding less absolute capacity than China. This difference reflects varying electricity prices and fossil fuel costs across markets. In regions with higher gas or coal prices, each megawatt-hour of renewable generation delivers greater financial savings.

European economies also benefited substantially. Germany saved $18 billion, while other EU member states contributed to the overall reduction in fossil fuel spending. These savings arrived during a period when European gas prices remained elevated compared to historical averages.

UK businesses with European operations or supply chains saw direct benefits from this shift. Lower electricity costs in manufacturing hubs reduce production expenses. For companies managing cross-border supply chains, renewable energy penetration affects everything from component pricing to logistics costs.

Emerging economies in the Global South are expanding renewable capacity twice as fast as developed nations. This acceleration suggests future savings will distribute more evenly across global markets. Brazil and India each saved over $18 billion in 2025, demonstrating that cost advantages extend beyond wealthy economies.

What UK businesses need to know about renewable cost trends

• Over 90% of new utility-scale renewable capacity commissioned in 2025 generated electricity cheaper than the least expensive new fossil fuel alternative, widening the cost gap between clean and conventional power sources.
• Global renewable capacity additions exceeded 690 gigawatts in 2025, with solar photovoltaic and wind installations leading growth across diverse markets and regulatory environments.
• Firm solar-plus-storage systems now deliver round-the-clock power at costs between $54 and $82 per megawatt-hour, down from over $100 per megawatt-hour in 2020, enabling baseload renewable electricity without fossil fuel backup.
• Fossil fuel electricity generation declined by 0.2% in 2025, marking the first reduction driven by structural clean power growth rather than economic crisis or demand shocks.
• The top 20 global economies saved $377 billion in fossil fuel costs through renewable generation, representing approximately four-fifths of worldwide electricity production.
• IRENA projects renewable power costs will continue falling through 2035, with firm solar-plus-storage expected to reach below $50 per megawatt-hour at prime sites, further increasing the price advantage over new fossil fuel capacity.
• Renewable capacity growth is accelerating twice as fast in emerging economies compared to developed nations, suggesting future cost benefits will distribute more broadly across global markets.

How falling renewable costs affect procurement and operations

The $480 billion in global fossil fuel savings demonstrates that renewable energy now delivers immediate commercial value alongside emissions reductions. For UK SMEs, this shift creates both opportunities and strategic considerations across several business functions.

Energy procurement strategies need updating to reflect changing cost structures. Businesses that locked in long-term contracts when fossil fuels dominated may now pay premium rates compared to current market options. Additionally, companies planning new facilities should factor declining renewable costs into site selection and infrastructure decisions.

Supply chain costs increasingly reflect the energy mix in manufacturing regions. Components produced using cheap renewable electricity carry lower production costs than those relying on fossil fuels. Therefore, procurement teams should evaluate supplier energy sources as part of total cost analysis.

Public sector suppliers face explicit carbon reporting requirements. The declining cost of renewable electricity means businesses can meet these requirements while reducing operational expenses. This alignment between compliance and cost control represents a significant change from earlier assumptions about sustainability investments.

Businesses considering carbon reduction targets or environmental reporting frameworks can now build strategies around commercially advantageous energy choices rather than trading off cost against emissions. The widening price gap between renewables and fossils reinforces this business case.

International operations require particular attention. Companies with facilities across multiple countries will experience different rates of renewable penetration and varying cost advantages. Consequently, energy strategies need geographic tailoring rather than global standardisation.

The data also affects risk management approaches. Fossil fuel price volatility has historically created budgeting uncertainty for energy-intensive businesses. Renewable generation’s price stability offers a hedge against this volatility. Finance teams should evaluate exposure to fuel price fluctuations when planning capital allocation and operational budgets.

For businesses in sectors with high electricity consumption, the cost trajectory of firm renewable power matters significantly. Battery storage costs continue falling, making renewable baseload power increasingly viable. This trend removes one of the last technical barriers to complete renewable reliance for continuous operations.

SMEs competing for contracts with larger corporations may face indirect pressure to demonstrate low-carbon operations. As major companies set Scope 3 emissions targets, they increasingly scrutinise supplier carbon footprints. Access to cheap renewable electricity supports both cost competitiveness and supply chain positioning.

Where to find detailed renewable cost data and projections

The complete IRENA analysis is available through the International Renewable Energy Agency’s publication portal. The report includes detailed cost breakdowns by technology, region and project type.

For UK-specific energy policy and market developments, the Department for Energy Security and Net Zero publishes regular updates on renewable deployment, grid infrastructure and electricity market reforms.

Ember’s analysis of global electricity generation trends provides additional context on fossil fuel displacement. Their global electricity review tracks generation sources across major economies.

Businesses requiring guidance on carbon reporting standards and compliance frameworks can consult the UK government’s carbon reporting guidance, which outlines requirements for different business sizes and sectors.

Companies exploring renewable power purchase agreements or on-site generation should review technical and commercial considerations through industry bodies such as the Renewable Energy Association. However, specific procurement decisions require assessment of individual site characteristics, grid connections and consumption profiles.