Huawei and Sungrow have emerged as the world’s top two solar inverter manufacturers in the first half of 2025, according to Wood Mackenzie’s Global Solar Inverter Manufacturer Rankings H1 2025 report. Huawei secured the top position with a score of 93.9, narrowly followed by Sungrow at 93.7.
The biannual ranking assessed 23 leading inverter manufacturers across seven countries, covering companies that accounted for nearly 90 per cent of global inverter shipment volumes in 2024. The evaluation was based on eight weighted performance criteria, including Environmental, Social and Governance (ESG) practices, after-sales service, research and development (R&D), and supply chain stability.
Commenting on the findings, Timothy Shen, Senior Research Analyst at Wood Mackenzie, said the global inverter market in 2025 is being shaped by a combination of scale and innovation. He noted that competitive advantage is increasingly driven not only by shipment volumes but also by strong ESG credentials, service quality and resilient supply chains.
A key highlight of the H1 2025 rankings is the growing maturity of ESG practices across the sector. Six of the top ten manufacturers achieved a silver or higher EcoVadis rating, placing them among the top 15 per cent of companies globally for sustainability performance. In addition, all top ten inverter suppliers now offer warranty extensions of 20 years or more, reflecting greater confidence in product durability and alignment with the operating life of solar modules.
Despite continued pricing pressure in the global solar market, innovation remains strong. Eight of the top ten manufacturers reinvest more than 6 per cent of their annual revenue into R&D, supporting advancements in digitalisation, power-conversion technologies, faster product development cycles and expanding patent portfolios.
The report also highlights accelerating geographic diversification among leading manufacturers as a strategy to mitigate trade and policy risks. Four of the top ten inverter companies now operate globally distributed manufacturing footprints, with production facilities located across China, Europe, India, the United States, Southeast Asia and Israel. According to Wood Mackenzie, regionalised assembly strategies are enabling manufacturers to comply with local content requirements while maintaining supply chain reliability.
Wood Mackenzie also identified a group of “Grade A” inverter manufacturers, a designation awarded to companies that meet at least five of the firm’s industry benchmarks. These benchmarks reflect best practices across areas such as ESG and corporate social responsibility, after-sales service, R&D investment, manufacturing experience and capacity utilisation. The Grade A status is intended to help developers, EPCs and asset owners reduce execution and operational risks when selecting suppliers.
The Wood Mackenzie inverter manufacturer rankings are published twice a year and are based on data from vendor surveys, public disclosures, proprietary databases and extensive engagement with manufacturers. Companies with score differences of 0.2 points or less are assigned the same rank.
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