Global investment in clean energy and related technologies declined significantly during the first half of 2026, highlighting the changing conditions facing the renewable energy industry. Spending across areas such as solar power, electric vehicles, sustainable aviation fuel and clean technology manufacturing recorded a notable slowdown.

According to a recent analysis, global clean energy and technology investment fell by 17 percent during the first six months of the year. The largest decline was recorded during the first quarter, when investment dropped by 28 percent compared with the previous period.

China accounted for a large share of the decline during the first quarter. Changes in electric vehicle incentives and adjustments in the pricing system for wind and solar power contributed to weaker investment after a period of strong activity.

The slowdown has also affected investment in solar and battery manufacturing. Companies operating in these areas are dealing with changing government policies, market conditions and demand patterns across major economies.

Despite the broader decline, the second quarter showed some improvement in several important markets. Clean energy spending increased in India, the United States and China compared with the first quarter. This indicates that investment activity has not disappeared and that some markets are beginning to show signs of recovery.

The clean energy industry continues to attract attention because countries are working to increase renewable power generation and reduce dependence on traditional energy sources. Solar and wind power are expected to remain important parts of future electricity systems.

The latest investment figures show that the transition toward cleaner energy is continuing, although the pace of spending can change significantly depending on government policies, market conditions and investment confidence.