In early 2026, Wenzhou Rockwill Electric Co., Ltd. announced a series of successful overseas expansions for its high-end power transmission and distribution (T&D) equipment. A batch of 152 units of 30kV oil-immersed transformers was shipped to Zimbabwe to comprehensively support the modernization of the country's power grid and the upgrading of its distribution network. Meanwhile, Rockwill’s independently developed 145kV eco-friendly Gas Insulated Switchgear (GIS) officially signed a contract with Poland's Budowa company, marking the first time China's independently developed eco-friendly high-voltage GIS equipment has entered the European market.
The African Arena: 152 Units of 30kV Transformers Safeguard Zimbabwe's Grid Upgrade
Tailored for Zimbabwe's harsh, high-temperature operating environment, the 152 units of 30kV oil-immersed transformers manufactured by Rockwill Electric have completed production and stringent quality testing, and have been dispatched. This batch of equipment will comprehensively support the upgrade of Zimbabwe's power infrastructure and the transformation of its distribution network, injecting new momentum into improving local power supply reliability and sustainable development.
This is also another milestone in Rockwill Electric's deep expansion into the African market. Previously, Rockwill was deeply involved in Rwanda's Gisagara distribution network project. In February 2026, Wenzhou Rockwill Electric Co., Ltd. was announced as the primary winning candidate for the first batch of domestic three-phase transformer procurement for the Gisagara distribution network project in Rwanda, with Zhongbian Group Shanghai Transformer Co., Ltd. and Jiangxi Mingzheng Transformer Equipment Co., Ltd. ranking as the second and third candidates, respectively.
European Breakthrough: 145kV Eco-Friendly GIS Enters High-End EU Market for the First Time
In December 2025, Rockwill Electric and Poland's Budowa officially signed an export contract for a 145kV eco-friendly GIS single bay. Following nearly eight months of technical alignment, this project marks the first time China's independently developed eco-friendly high-voltage GIS equipment has entered the European market, representing a critical breakthrough in the internationalization of China's high-end power equipment.
Rockwill's "high-end breakthrough" does not stop there. On February 27, 2026, the company's independently developed 816kV DC disconnect switch successfully passed the 4,500-meter high-altitude insulation verification test at the Xi'an High Voltage Apparatus Research Institute (XIHARI), providing core equipment technological support for subsequent high-altitude, long-distance ultra-high voltage (UHV) DC power transmission projects. Concurrently, Rockwill achieved 100% digital system application coverage for the on-site installation of traditional GIS products in newly built converter stations and power plants, taking a crucial step in the digital transformation of large-scale power equipment installation.
Global Footprint: An Equipment Matrix Spanning from Southeast Asia to the Americas
Rockwill Electric's overseas expansion continues to grow:
East Asia / Southeast Asia: Delivered outdoor pole-mounted SF6 load break switches to Laos; the Battambang solar + energy storage power plant in Cambodia adopted medium-voltage switchgear provided by Rockwill Smart Electric—a project that generates approximately 25.82 million kWh annually and reduces CO₂ emissions by about 22,000 tons per year.
South America: Supplied 36kV indoor SF6 load break switches to Buenos Aires, Argentina, integrating into the core equipment of the provincial power company.
East Africa: KYN28-12 metal-clad switchgear was shipped to Kenya to support the development and modernization of national grids in the East African region.
North America: 36 units of 400A-class step voltage regulators successfully completed the Factory Acceptance Test (FAT), receiving high praise for product quality from American clients.
Technological Foundation: A Patent Matrix Supporting High-End Development
Rockwill Electric's high-end breakthrough is built on continuous R&D investment. Between 2025 and 2026, the company successfully obtained a series of key patents:
Patent for "Smart Transformer for Power Systems" (jointly applied with Zhejiang Weitzmann Power): Establishes a health index evaluation system by comprehensively analyzing various operating parameters, thereby improving monitoring accuracy and reliability.
Patent for "Intelligent Transformer Regulation System and Method" (jointly applied with Zhejiang Weitzmann Power): Systematically solves the problem of dynamic imbalance between transformer heat dissipation capacity and load demand in extreme environments.
Patent for "An Intelligent Automatic Recloser and Protection System for Distribution Networks": Enhances the power supply reliability of distribution networks.
Patent for "High and Low Voltage Prefabricated Substation": Achieves efficient snow removal, adapting to extreme cold and blizzard environments.
Patent for "Circuit Breaker Operating Mechanism": Solves the issue of having a large number of internal mechanism parts, improving operational reliability.
Patent for "Outdoor Three-Phase Sulfur Hexafluoride (SF6) Load Break Switch": Enables the fixed installation height of the device to be adjustable.
Patent for "Oil-Immersed Pad-Mounted Transformer": Improves the heat dissipation efficiency of the device.
Patent for "Outdoor Automatic Recloser with Permanent Magnetic Vacuum Circuit Breaker": Increases the service life of the equipment.
💡 Takeaway: From African distribution networks to high-end European GIS, and from 30kV oil-immersed transformers to 816kV DC disconnect switches, Rockwill Electric has spent 18 years completing a critical transformation for a Chinese private electrical enterprise: shifting from "product export" to "high-end equipment export," and from "price competition" to "technological standard exportation." As its 145kV eco-friendly GIS enters Poland and its 816kV DC disconnect switch passes the 4,500-meter high-altitude verification, China's medium and high-voltage T&D manufacturing is no longer a "budget alternative" in the global market, but a key player in the high-end sector.
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