Photovoltaics is the most important renewable energy source in Local Energy Communities (LEGs). Optimal use of solar energy maximizes self-consumption, reduces costs, and makes LEGs economically more attractive.
In this guide, you'll learn how to optimally use photovoltaic systems in LEGs and maximize the self-consumption rate.
Why Optimize Photovoltaics in LEGs?
Benefits of Optimized Use
1. Economics:
- Higher self-consumption rate = more savings
- Reduced grid purchases
- Optimal compensation for surplus
2. Efficiency:
- Minimal energy waste
- Optimal resource use
- Higher overall efficiency
3. Sustainability:
- Maximum use of renewable energy
- Reduced CO2 emissions
- Contribution to energy transition
Maximization Strategies
1. Load Shifting
What is it?
- Shift consumption to production times
- Use during day when solar produces
- Automatic control possible
Examples:
- Run heat pumps during day
- Washing machine, dishwasher during day
- Charge electric vehicles during day
Potential: +20-30% self-consumption rate
2. Use Energy Storage
How it works:
- Battery storage for surplus
- Charge during day, use evening/night
- Optimized control
Potential: +30-50% self-consumption rate
3. Forecast-Based Optimization
How it works:
- Use weather forecasts
- Create consumption forecasts
- Optimal planning
Technical Optimization
1. Optimize System Orientation
Optimal:
- Orientation: South
- Inclination: 20-40°
- Minimal shading
2. Choose Module Technology
Options:
- Monocrystalline: Highest efficiency
- Polycrystalline: Good price-performance
- Thin film: Flexible
3. Optimize Inverter
Requirements:
- Efficiency >95%
- MPPT (Maximum Power Point Tracking)
- Monitoring functions
- Smart Grid Integration
Typical Key Figures
Self-Consumption Rate
Without Storage:
- Typical: 30-50%
- Optimized: 50-70%
- Best Case: 70-80%
With Storage:
- Typical: 60-80%
- Optimized: 80-95%
- Best Case: 95%+
Frequently Asked Questions (FAQ)
How can I increase my self-consumption rate?
Measures:
- Load shifting
- Use energy storage
- Optimized control
- Forecast-based planning
Is storage worth it for photovoltaics?
Often yes:
- Self-consumption rate increases significantly
- Economically viable with good grants
- ROI: 10-15 years
Next Steps
Optimize photovoltaics?
- Plan system: Optimal orientation
- Implement load shifting: Automatic control
- Integrate storage: For higher rate
- Use Upgrid: For optimization
Maximum use = maximum savings!
Related Articles:
- Solar Panels in LEG: Planning, Installation, Integration
- Energy Storage in LEG: Batteries, Hydrogen, Pumped Storage
- Smart Grid Technology for Energy Communities
- LEG Cost-Benefit Analysis: How Much Can You Save?
About Upgrid: Upgrid supports you in optimally using photovoltaics in LEGs. Visit Upgrid.ch for more information.