“China has expanded its global BESS footprint at remarkable speed. Now, eight of the top 10 global integrators are headquartered in China. Tesla and Sungrow retained the top two positions for the third consecutive year, while BYD advanced five places to claim third,” said Jiayue Zheng, senior research analyst at Wood Mackenzie. “The combined share of the top three integrators fell from 36% in 2024 to 30% in 2025, but this reflects rapid overall market growth and the rise of mid-tier vendors rather than any weakening at the top.”
Tesla holds firm at the top of the North American BESS market
Tesla retained its leadership in North America, supported by its Megapack hardware platform, Autobidder software, and US-based manufacturing. NextEra Energy entered the top three for the first time, benefiting from its position as a vertically integrated self-integrator insulated from tariff disruption. Looking ahead, the One Big Beautiful Bill Act (OBBBA) introduces Foreign Entity of Concern (FEOC) compliance thresholds for projects seeking the 48E Investment Tax Credit, with provisions taking effect from 2026. Non-FEOC sourcing requirements start at 55% of project costs in 2026, rising to 75% by 2030, a trajectory that will significantly constrain the ability of Chinese manufacturers to supply into the US market.
Sungrow retains first place in Europe while BYD closes the gap from fifth to second
Sungrow retained first place, while BYD jumped from fifth to second, and Huawei entered the top three. Chinese vendors now occupy all three leading positions. The market is expanding beyond the UK, Germany, and Italy, with Bulgaria, Romania, Belgium, Spain, the Netherlands, and Greece forming a distinct second tier of growth markets. Policy pressure is intensifying through the Net Zero Industry Act (NZIA), the Industrial Accelerator Act (IAA), and the EU Batteries Regulation, all of which raise the bar for import-dependent suppliers and reward local manufacturing capacity.
CRRC and HyperStrong lead APAC as Southeast Asia emerges as a new growth frontier
CRRC topped the regional ranking for the third consecutive year, followed by HyperStrong and Envision. China accounted for roughly 85% of the APAC market. Southeast Asia emerged as a meaningful growth frontier, with the Philippines, Vietnam, Indonesia, Thailand, and Malaysia advancing regulatory and procurement frameworks. Australia remains the region's most accessible market for non-Chinese integrators, given its stringent technical standards and lender preferences.
Chinese integrators extend their reach across the Middle East and Latin America
The Middle East entered an era of mega-scale procurement. The UAE announced a 5.2 GW solar project paired with 19 GWh of storage, and Saudi Arabia's two BESS tender rounds covered a combined 5 GW/20 GWh. BYD and Sungrow together captured 87% of the regional market. In Latin America, Chile leads with the most mature regulatory framework. BYD's total contracted volume with Grenergy reached 6.5 GWh across all phases of the Oasis de Atacama project.
Competition in the global BESS integrator market is shifting from scale alone to a multidimensional set of capabilities. Policy compliance, grid-forming technology, software-driven revenue optimisation, and financing support are becoming decisive competitive variables.
“Integrators that can meet these demands across diverse regulatory environments will build the most durable market positions through the remainder of the decade,” said Zheng.
