1. Global Renewable Energy Overview

The global renewable energy sector has demonstrated remarkable resilience and growth momentum entering 2025. According to the International Renewable Energy Agency (IRENA), renewable capacity statistics show that by the end of 2024, renewables accounted for 4.5 TW or 46% of global installed power capacity[1]. This represents the largest increase in renewable energy capacity to date, with the addition of 585 GW of renewables and a 15% growth rate in 2024.

1.1 Market Growth and Capacity

The International Energy Agency (IEA) projects that renewable power capacity will increase by approximately 4,600 GW between 2025 and 2030, effectively doubling the deployment of the previous five-year period (2019-2024)[2]. This growth is primarily driven by solar photovoltaic technology, which is expected to represent nearly 80% of worldwide renewable electricity capacity expansion.

However, the IEA has revised its forecast downward by 5% compared to the previous year, reflecting policy, regulatory, and market changes since October 2024. This revision translates to 248 GW less renewable capacity expected to be commissioned over the 2025-2030 period. Solar PV accounts for over 70% of this absolute reduction, mainly from utility-scale projects, while offshore wind demonstrates the largest relative decline at 27%.

1.2 Regional Distribution

China continues to dominate global renewable energy deployment, having passed 1.6 TW of operating wind and solar projects in 2025[3]. The Asia-Pacific region remains the undisputed leader, accounting for 70% of global capacity additions with a 37% annual growth rate. The Americas increased by 40% to capture a 14% market share, while Europe saw more modest growth of 15%, reaching 82.1 GW with a 14% market share.

The G7 countries present a concerning contrast. Despite IRENA's calls for G7 nations to more than double their annual renewable energy capacity additions through 2030, the G7's wind and utility-scale solar pipeline has remained mostly unchanged at around 520 GW since 2023. This misalignment between current pipelines and required progress highlights the implementation gap in developed economies.

2. Solar Energy Sector

2.1 Market Performance

The global solar PV market is expected to grow by 10% in 2025, reaching 655 GW under the medium scenario according to Solar Power Europe[4]. This marks a continuation of the deceleration trend following the extraordinary 85% growth in 2023 and the more moderate 33% in 2024. The trajectory remains subject to risks as policy changes in the two largest markets, China and the United States, may further temper growth.

In the United States, the solar industry installed 43.1 GWdc of capacity in 2025, marking a 14% decline from 2024 according to the Solar Energy Industries Association (SEIA)[5]. Despite this decline, solar remained the dominant source of new capacity for the fifth consecutive year, with solar and energy storage representing 79% of new capacity additions. Notably, over two-thirds of all solar capacity installed in 2025 was built in states that supported the current administration, including Texas, Indiana, Florida, Arizona, Ohio, Utah, and Arkansas.

2.2 Regional Highlights

Commercial solar in the United States saw another record year in 2025, adding 2.3 GWdc of new capacity, up 6% from 2024. California continued to dominate the market, accounting for 39% of national installations and posting 28% year-over-year growth. The commercial segment grew 11% quarter-over-quarter in Q4 2025, driven largely by a wave of NEM 2.0 projects coming online in California.

2.3 Challenges and Opportunities

The solar industry faces several headwinds in 2025. The new tax legislation, commonly referred to as the One Big Beautiful Bill Act, rolled back many clean energy tax credits and imposed new restrictions, pressuring early-stage wind and solar pipelines. Wind and solar investments in the first half of 2025 fell 18%, to nearly $35 billion compared to the same period in 2024[6].

However, opportunities remain substantial. The economics of solar remain strong as one of the few solutions that can quickly meet surging electricity demand driven by data center growth. The U.S. is expected to add 490 GW of new solar capacity by 2036, bringing cumulative installed capacity to nearly 770 GW. Meeting the Global Solar Council's aspirational target of 8 TW by 2030 will require an accelerated pace of deployment of roughly 1 TW of new installations per year on average.

3. Wind Energy Sector

3.1 Onshore Wind Developments

The global wind power sector recorded exceptional growth in the first half of 2025, with installations rising by 64% compared to the same period of 2024[7]. A total of 72.2 GW of new capacity were added between January and June 2025, following 44.1 GW installed in the first half of the previous year. By the end of June 2025, total installed wind power capacity reached 1.245 TW (1.25 terawatts), representing a 13.5% annual growth rate.

China led global installations, adding 51.4 GW in the first half of 2025, more than double the previous year. Germany awarded nearly 11 GW of new onshore wind capacity in tenders, an all-time high representing a remarkable 70% increase year-on-year. This surge results mainly from permitting condition improvements that addressed years of undersubscribed auctions.

Compared with 2019-2024, the IEA forecast expects cumulative onshore wind capacity additions to increase 45% over 2025-2030, reaching 732 GW. Annual additions are expected to rise across Africa, the Middle East, ASEAN countries, Latin America, and Eurasia, in addition to Europe and India.

3.2 Offshore Wind Expansion

Offshore wind capacity expansion is expected to reach 140 GW over the forecast period, more than doubling the growth of the previous five-year period. The annual offshore wind market is projected to expand from 9.2 GW in 2024 to over 37 GW by 2030, with China accounting for almost 50% of this increase. In Europe, the annual market is expected to approach 14.6 GW by 2030.

However, the sector faces significant challenges. Policy changes in the United States, macroeconomic pressures, and supply chain challenges have raised costs and undermined project bankability in several European markets and Japan, resulting in undersubscribed auctions and project cancellations. As a result, the IEA has revised the global offshore wind capacity forecast 27% downwards from last year.

3.3 Market Outlook

The World Wind Energy Association projects that 2025 will be the strongest year ever for wind power, with a record 150 GW expected to be installed and total capacity surpassing 1.3 TW by year-end. Wind energy now provides approximately 12% of global electricity demand, with the semiannual growth rate reaching 6.2% compared with 4.2% in the first half of 2024.

Brazil has consolidated its position as the fifth-largest market worldwide, while Turkey has overtaken Italy to become the eleventh-largest wind market. Important policy advances were made across the Asia-Pacific region as Japan, South Korea, Philippines, and Australia progress their wind energy markets.

4. Conclusion and Strategic Implications

The renewable energy sector in 2025 presents a complex picture of continued growth tempered by policy headwinds and market challenges. While global capacity additions remain substantial, the downward revision in forecasts signals the need for accelerated policy action to meet international climate commitments.

Key Strategic Implications

Policy Stability is Critical: The impact of regulatory changes in major markets demonstrates the sensitivity of renewable deployment to policy certainty. Governments must provide clear, long-term signals to maintain investor confidence and project pipelines.

Grid Integration Challenges: Meeting the commitment to triple renewable energy capacity by 2030 will require an unprecedented scale-up in electricity grid investments. Electricity grids must shift from being bottlenecks to becoming the backbone of the energy transition.

Technology Cost Competitiveness: Despite policy headwinds, the fundamental economics of solar and wind remain strong. As Michelle Davis of Wood Mackenzie notes, "escalating costs of new gas plants will allow solar to remain competitive, even without tax credits."

Regional Divergence: The continued dominance of China and the Asia-Pacific region, contrasted with stagnation in G7 pipelines, suggests a shifting center of gravity in the global energy transition. Developed economies must accelerate deployment to maintain leadership positions.