


EV Charger Testing & Certification
ChargeScale EV provides EV charger testing and EVSE certification services to ensure electric vehicle charging equipment meets California regulatory requirements. Our team guides site hosts and charging network operators through CTEP and NTEP certification while coordinating directly with California Weights & Measures officials to verify charging accuracy and commercial billing compliance.
EVSE Compliance & Certification Consulting
ChargeScale EV provides EVSE compliance consulting to help site hosts, developers, and charging network operators navigate California regulatory requirements. Our team advises on CTEP and NTEP certification, placement-in-service procedures, and Weights & Measures approvals to ensure EV charging infrastructure is deployed correctly and ready for commercial billing.
RSA EV Charger Calibration & Accuracy Verification
As licensed Registered Service Agents (RSA), ChargeScale EV performs calibration and accuracy verification for EV charging equipment in accordance with California Weights & Measures regulations. Our testing confirms that EV chargers measure electricity correctly and remain compliant with commercial energy billing requirements.
EV Charger Placement-In-Service Inspection
ChargeScale EV performs placement-in-service inspections required for EV charging stations used in commercial billing. We coordinate directly with state and county Weights & Measures officials to verify charger accuracy and obtain official regulatory seals before equipment is approved for operation.


EV Charger Testing & EVSE Certification
ChargeScale EV provides EV charger testing, EVSE certification, calibration, and compliance verification services for electric vehicle charging infrastructure across Northern California.

Municipalities & Public Agencies
Commercial Property Owners & Managers
Utilities & Energy Providers
Fleet Operators & Transportation Companies
Healthcare Systems & Medical Campuses
Universities & Educational Institutions
Commercial Developers & Construction Firms
Retail & Hospitality Operators
EV Charging Network Operators
Industries & Organizations We Serve

California EVSE Weights & Measures Regulations
California EV Charger Weights and Measures Regulations
Electric Vehicle Supply Equipment (EVSE) used for commercial charging in California is regulated under the State’s Weights and Measures program to ensure accurate measurement and transparent transactions when electricity is sold to the public.
When EV charging is offered for a fee, the equipment used to measure and deliver electricity—typically in kilowatt-hours—is considered a commercial measuring device under California law.
Before EV chargers can be placed into service for commercial use, the equipment must meet several regulatory requirements, including:
• Type evaluation and approval through programs such as the California Type Evaluation Program (CTEP)
• Verification of measurement accuracy
• Proper installation and labeling
• Placement-into-service inspection and sealing
These requirements ensure that EV charging equipment measures electricity accurately, provides fair transactions for drivers, and complies with California Weights and Measures regulations. Enforcement of these requirements is overseen by local County Departments of Weights and Measures.
Regulatory Testing and Compliance Support
ChargeScale EV supports charger owners, site hosts, network operators, and developers in meeting California’s regulatory requirements for EV charging infrastructure.
Our services help ensure EV charging equipment is properly verified and prepared for placement into service, including:
• EV charger regulatory accuracy testing
• Placement-into-service verification
• Compliance documentation and reporting
• Coordination with local Weights and Measures authorities
ChargeScale EV operates as a licensed Registered Service Agency (RSA #5129) with the State of California.
Learn More About California EV Charger Regulations
Additional information regarding California’s Weights and Measures requirements for commercial EV charging equipment is available from the California Department of Food and Agriculture Division of Measurement Standards (DMS), the state authority responsible for standards and oversight of commercial measuring devices.
ChargeScale EV provides EV charger regulatory testing and compliance support for commercial charging infrastructure across California.


How EV Chargers Are Placed Into Service in California
In California, EV chargers that sell electricity by the kilowatt-hour are regulated as commercial measuring devices under the State’s Weights and Measures program.
Before a charger can legally be used for commercial transactions, it must meet several regulatory requirements and be verified for measurement accuracy.
The typical process includes the following steps:
1. Type Evaluation and Approval
EV charging equipment used for commercial transactions must first receive type approval through programs such as the California Type Evaluation Program (CTEP). This evaluation ensures that the equipment meets the technical and metrological standards required for commercial measuring devices.
2. Installation and Configuration
Once approved, the equipment is installed, and the charging system must be properly configured according to manufacturer specifications and regulatory requirements. Installation conditions, labeling, and system setup must comply with applicable Weights and Measures standards.
3. Regulatory Accuracy Testing
Before the equipment can be used for public charging transactions, the measurement system must be tested to verify that the energy delivered and recorded by the charger meets required accuracy tolerances.
4. Placement Into Service
After successful verification, the charger may be placed into service and sealed as required. This indicates that the equipment has been verified for commercial use and is authorized to conduct charging transactions.
Local County Departments of Weights and Measures are responsible for oversight and enforcement of these requirements.
How ChargeScale EV Supports This Process
ChargeScale EV works with charger owners, developers, contractors, and network operators to help ensure EV charging equipment is properly tested and prepared for placement into service.
Our role typically includes:
• Regulatory accuracy testing of EV charging equipment
• Placement-into-service verification and sealing
• Compliance documentation and reporting
• Coordination with local Weights and Measures authorities
ChargeScale EV operates as a licensed Registered Service Agency (RSA #5129) with the State of California.
Business Info
Service Area
ChargeScale EV is based in California and provides EV charger regulatory testing and compliance services for commercial charging infrastructure across the state.
We work with charger owners, network operators, contractors, and developers to support EV charging projects from installation through placement into service.
Address
2570 N First St Ste 200100A
San Jose, CA 95131
