Name: Efficiency/Specific Energy Consumption (SEC) Measurement & Validation System
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Efficiency/Specific Energy Consumption (SEC) Measurement & Validation System

The AVL Efficiency/SEC Measurement & Validation system is developed to accurately determine the energy efficiency of industrial electrolyzers.

The system calculates Specific Energy Consumption, SEC, in kWh/kg H₂ based on directly measured electrical energy input and hydrogen output.

Electrical voltage, current, power, and energy supplied to the electrolyzer are continuously measured on the power input side.

Hydrogen production is quantified using hydrogen flow measurement together with relevant gas condition parameters such as pressure and temperature.

These measured values form the basis for SEC calculation under real operating conditions, ensuring consistent and reproducible efficiency evaluation across different test scenarios and electrolyzer configurations.

The system continuously evaluates operating stability and identifies stable measurement windows based on defined criteria.

SEC values are calculated and reported only when stable conditions are achieved, preventing misinterpretation of transient or non-representative operating phases.

Each reported SEC result is accompanied by an explicit measurement uncertainty evaluation, providing transparency into data quality and confidence levels.

The solution integrates electrical sensing, hydrogen flow measurement, gas condition monitoring, data acquisition, stability logic, and result processing into an industrial hardware platform.

Designed as a standalone system, the solution interfaces with existing electrolyzer installations without requiring integration into the electrolyzer control system.

Key features

SEC calculation: kWh/kg H₂ based on directly measured electrical energy input and hydrogen output

Stability verification: SEC reporting only under defined stable operating conditions

Uncertainty assessment: Each SEC result includes a measurement uncertainty evaluation

Electrical measurement: Voltage, current, power, and energy measurement on the electrolyzer input side

Hydrogen measurement: Hydrogen flow measurement with gas pressure and temperature monitoring

Data handling: Continuous measurement data logging for post-analysis and reporting

Visualization: Local interface for live monitoring of signals, system status, stability indicators, and SEC results

Integration: Standalone operation without the need for full testbed integration or external gas sampling

Components

Electrical sensing: Measurement of voltage, current, power, and energy supplied to the electrolyzer

Hydrogen flow measurement: Quantification of hydrogen output

Gas condition monitoring: Measurement of pressure and temperature

Data acquisition: Collection and synchronization of measurement signals

Stability logic: Identification of valid and stable measurement windows

Result processing: SEC calculation and uncertainty-qualified reporting

Visualization interface: Live monitoring of measurement data, stability status, and processed results

Industrial hardware platform: Compact and modular standalone system architecture

Use cases

Efficiency measurement of Alkaline electrolyzers

Efficiency measurement of PEM electrolyzers

Efficiency measurement of AEM electrolyzers

Specific Energy Consumption validation in kWh/kg H₂

Electrolyzer performance testing and benchmarking

Commissioning support for hydrogen production systems

Validation-oriented efficiency assessment for OEMs, system integrators, EPCs, research organizations, testing bodies, and hydrogen project developers

Efficiency/Specific Energy Consumption (SEC) Measurement & Validation System