Practical Activity 2: Calculate Energy Demand and System Performance Requirements
Objectives
After completing this practical activity, learners will be able to:
- Calculate Solar PV system energy demand requirements accurately
- Determine operational system performance requirements
- Analyze electrical load profiles and energy usage patterns
- Calculate daily and monthly energy consumption values
- Apply workplace operational procedures during energy demand analysis activities
Scenario
You are part of a solar PV design team responsible for preparing a Solar PV system design for a client installation. Following the site inspection and electrical load assessment, you are now required to calculate the energy demand, operational performance requirements, and system capacity requirements according to workplace operational standards and manufacturer specifications.
You are required to analyze load data, calculate energy demand accurately, determine operational requirements, and verify the system performance requirements before system sizing activities can begin.
Instructions
Step 1: Review Electrical Load Assessment Information
Review and verify:
- Load assessment reports
- Appliance and equipment ratings
- Operating hours
- Daily energy consumption data
- Peak demand requirements
- Critical and non-critical load information
Ensure all operational load data is complete and accurate before calculations begin.
Step 2: Calculate Daily Energy Consumption
Calculate:
- Individual appliance energy usage
- Daily energy demand values
- Total daily load consumption
- Peak operational demand
- Simultaneous load requirements
Apply approved calculation procedures throughout the activity.
Step 3: Calculate Monthly and Seasonal Energy Requirements
Analyze and calculate:
- Monthly energy demand
- Seasonal consumption trends
- Peak usage periods
- Operational load variations
- Future energy demand allowances
Ensure all calculations align with operational requirements and customer expectations.
Step 4: Determine System Performance Requirements
Determine:
- Required system output capacity
- Backup power requirements
- Battery autonomy requirements where applicable
- Grid support requirements where applicable
- Operational efficiency requirements
- Performance targets
Verify that all operational performance requirements are realistic and achievable.
Step 5: Analyze Environmental and Operational Factors
Evaluate factors such as:
- Solar irradiation levels
- Weather conditions
- Temperature impacts
- Shading losses
- Installation orientation
- System efficiency losses
Determine how these factors affect system performance requirements.
Step 6: Verify Calculation Accuracy and Operational Suitability
Verify:
- Calculation accuracy
- Energy demand assumptions
- Operational performance targets
- Safety margins
- System feasibility
Correct calculation errors where required.
Step 7: Complete Workplace Documentation
Complete:
- Energy demand calculation worksheet
- System performance analysis report
- Operational load analysis report
- Environmental impact assessment report
- Workplace operational compliance documentation
Expected Output
Learners must produce:
- A completed energy demand calculation worksheet
- A system performance analysis report
- An operational load analysis report
- An environmental impact assessment report
- A workplace operational compliance report
Skills Practiced
- Energy demand calculations
- Load profile analysis
- Operational performance analysis
- Energy consumption evaluation
- Environmental performance assessment
- System feasibility analysis
- Workplace operational compliance
- Operational documentation