Case Study
Accreditation empowers urban green energy initiatives
Summary
China National Accreditation Service for Conformity Assessment (CNAS) accreditation validated the charging pile testing capabilities of a Guangdong-based enterprise, offering technical support for ensuring efficient compatibility between urban charging infrastructure and renewable energy sources (e.g., solar, wind) as well as safe equipment operation. As of 2025, Guangzhou’s annual electric vehicle (EV) charging volume had surpassed 1.5 billion kWh, with over 50% of charging stations adopting a “green power, green infrastructure” model.
Background
To promote the specialised, refined, distinctive, and innovative development of small and medium enterprises (SMEs), which are also known as “Specialized and New” enterprises, since early 2024, the Chinese government has been encouraging SMEs to obtain quality management system certification accredited by CNAS as an important measure to strengthen quality management and enhance production management capabilities.
Strategy
CNAS has provided accreditation services for the charging pile testing capabilities of a body in Guangdong. This plays a robust technical supporting role in ensuring efficient compatibility between urban charging piles and renewable energy, safeguarding equipment safety, and empowering urban green and energy-efficient development. As of 2025, annual electric vehicle charging volume in a certain city in Guangdong Province exceeded 1.5 billion kWh, with over 50% of charging stations operating in the “green power, green charging piles” mode. The body first obtained CNAS accreditation in 2000. Through charging pile protocol conformance testing, it ensures efficient compatibility between charging piles and renewable energy while verifying their synergy capabilities with smart grids and energy storage equipment. As of 2025, more than 10 charging station operators in a certain city in Guangdong possessed integrated energy management software. This enables deep coordination between charging piles, energy storage devices and smart meters, supports load regulation and microgrid construction, and enhances renewable energy absorption capacity. Additionally, the body’s charging pile conversion efficiency testing ensures that Direct Current (DC) charging piles operate at over 95% efficiency, reducing energy waste and lowering operational costs for enterprises.
The body actively develops inspection capabilities for electric vehicle charging stations, collaborating with the Guangzhou Industrial and Information Technology Committee for acceptance and safety inspections. It conducts inspections on power supply facilities, charging pile equipment, and monitoring systems at operational charging stations in Guangzhou, identifying and rectifying potential safety hazards (e.g., electric shocks, short circuits, fires) in a timely manner.
According to reports, the body’s supercharging pile standards focus on high-power charging piles, emphasising breakthroughs in device adaptability and intelligent technologies. These standards provide systematic charging solutions and metrological verification plans for the electrification of construction machinery, driving supply chain technology integration, upstream-downstream collaboration, and resource allocation toward green industries.
Results and impact
The body first obtained CNAS accreditation in 2000. Through charging pile protocol conformance testing, it ensures efficient compatibility between charging piles and renewable energy while verifying their synergy capabilities with smart grids and energy storage equipment. As of 2025, Guangzhou’s annual EV charging volume had surpassed 1.5 billion kWh, with over 50% of charging stations adopting a “green power, green infrastructure” model.
Additionally, the body’s charging pile conversion efficiency testing ensures that DC charging piles operate at over 95% efficiency, reducing energy waste and lowering operational costs for enterprises.
Contact
Organisation: Compiled by China National Accreditation Service for Conformity Assessment (CNAS)
