IRENA 2025 Renewable Energy Cost Analysis: $480B in Savings, Record 692 GW of New Capacity, and the Geopolitical Case for Clean Power

Record 692 GW of New Renewable Capacity

692 GW of new renewable capacity was added globally in 2025, bringing total installed renewable capacity to 5,149 GW — a 15.5% annual increase . Renewables now account for 85.6% of all new power capacity added worldwide, with fossil fuels representing a shrinking share of additions . By the end of 2025, renewables made up 49% of global installed power capacity .

Solar PV: The Dominant Driver

Solar energy led the charge with a record 511 GW of new capacity added (over 510 GW), a 27.2% year-on-year increase, accounting for roughly 75% of total renewable growth . Solar's share of global renewable additions is so large that it alone is reshaping the energy landscape.

Wind: Steady Growth

Wind energy added an estimated 159 GW in 2025, with the typical split of approximately 145 GW onshore and 14 GW offshore . Together, solar and wind made up 96.8% of all new renewable additions last year .

Important caveat: The 692 GW capacity figure and the cost/savings data come from two separate IRENA reports — the capacity data from Renewable Capacity Statistics 2026 (April 2026), and the cost/savings data from Renewable Power Generation Costs in 2025 (July 2026). They reflect the same year (2025) but were published several months apart.

Levelized Cost of Electricity (LCOE): Renewables Cheaper Than Ever

IRENA reported the following global weighted-average LCOEs for newly commissioned projects in 2025:

• Solar PV was 41% cheaper than the cheapest fossil fuel alternative in 2024 .
• Onshore wind was 53% cheaper.
• 91% of new utility-scale renewable capacity in 2024 undercut the cheapest new fossil fuel option on an LCOE basis . This percentage held strong into 2025, with IRENA confirming that over 90% of new utility-scale capacity in 2025 was cheaper than the cheapest new fossil fuel plant .

Country-Level Savings: Who Benefited Most?

The countries that saved the most from replacing fossil fuel generation with renewables in 2025 were :

• China — $177 billion
• United States — $35 billion
• Brazil — $32 billion
• India — $18 billion
• Germany — $18 billion
• Japan — $15 billion

These figures represent estimated fossil fuel costs avoided in 2025 by the renewable capacity commissioned in prior years. China's dominant position reflects its massive renewable buildout over the past decade, while Brazil's high savings relative to its grid size are driven by its large hydro and wind fleets displacing expensive thermal generation.

Caveat: These country-level savings figures are widely cited across multiple secondary sources but could not be independently verified against the primary IRENA PDF within the search budget . They are consistent across sources.

Renewables as a Geopolitical Shield

IRENA Director-General Francesco La Camera explicitly framed renewable energy as a strategic buffer against fossil fuel price volatility and geopolitical shocks . The report positions renewables as a tool for energy security: countries that invest heavily in domestic renewable generation reduce their exposure to volatile international gas and coal markets, which are often subject to supply disruptions and price manipulation .

The report warns that fossil fuel-reliant economies remain vulnerable to price swings, while renewable-rich countries gain greater energy independence . This framing is particularly pointed given the energy price spikes of 2022-2024, which were driven by geopolitical conflict and supply chain constraints — shocks that renewables can help insulate against.

Emerging Headwinds: The Risks Ahead

Despite the record numbers, the reports and related coverage flag several challenges that could slow future deployment:

Clean Tech Manufacturing Investment Halved

Quarterly investment in clean energy manufacturing fell from roughly $70 billion to $35 billion per quarter, reflecting policy uncertainty and shifting trade dynamics . This drop is concerning because manufacturing capacity for solar panels, wind turbines, and batteries needs to scale dramatically to meet 2030 climate targets.

Rising Commodity Prices

Costs for key materials — polysilicon, steel, copper, lithium — have increased, pressuring project economics . Polysilicon prices, in particular, have been volatile, impacting solar module costs.

Trade Policy Shifts

Tariffs, export restrictions, and local-content requirements are creating fragmentation in global supply chains for solar panels, wind turbines, and batteries . This fragmentation could increase costs and slow deployment, especially in markets that rely on imported equipment.

Financing Costs as a Major Cost Driver

According to IRENA, financing costs now account for up to 56% of total project cost variation across different markets . This means that countries with higher interest rates face significantly higher effective LCOEs, even for the same technology. For developing economies, where the cost of capital is often much higher than in developed markets, this is a significant barrier to renewable deployment.

What This Means for the Energy Transition

The 2025 data from IRENA confirms that the economic case for renewables is now overwhelming. Onshore wind and solar PV are cheaper than any new fossil fuel plant in most of the world, and the cost advantage is widening. The geopolitical case is equally strong: renewables provide energy independence and buffer against fuel price shocks.

However, the transition is not inevitable. The headwinds — manufacturing investment declines, commodity price pressures, trade fragmentation, and financing cost disparities — must be addressed to maintain momentum. The countries that can lower the cost of capital for renewable projects, stabilize supply chains, and maintain supportive policy environments will be the ones that capture the full economic and geopolitical benefits of the energy transition.