S&P Global Energy’s 2026 Tier 1 Cleantech Companies list recognizes leading suppliers across solar, inverters, wind, battery energy storage systems, and introduces a new battery cell category, using expanded criteria that include market leadership, sustainability, and financial resilience. The update comes as cleantech markets diverge, with solar facing oversupply and margin pressure while battery storage demand accelerates, prompting manufacturers to diversify and adapt to evolving market and regulatory conditions.
S&P Global Energy has released its 2026 Tier 1 Cleantech Companies list, highlighting leading suppliers across key segments, including solar modules, PV inverters, wind turbines, battery energy storage systems (BESS), and, for the first time, battery cells.
The annual classification identifies manufacturers that meet S&P Global Energy’s criteria for market leadership, financial strength and corporate sustainability. Unlike traditional Tier 1 supplier lists, the framework is not presented as a ranking or investment recommendation, but as a classification based on multiple performance indicators.
The 2026 edition includes 15 PV module suppliers, 12 inverter manufacturers, 10 wind turbine suppliers, 12 energy storage system providers and 10 battery cell manufacturers. “The 2025 edition comprised 14 PV module suppliers, 12 inverter manufacturers, 9 wind turbine suppliers, and also 12 energy storage system providers,” Edurne Zoco, executive director, Clean Energy Technology at S&P Global Commodity Insights, told pv magazine. “There were no Tier 1 battery cell manufacturers in 2025 since we did not announce this category.”
