Solar Energy Systems Quiz

Photovoltaic Cells

• Convert sunlight into electrical energy through the photovoltaic effect
• Made from semiconducting materials like silicon, which release electrons when exposed to sunlight
• Cells are grouped together to form a module, and multiple modules make up a solar panel
• Efficiency varies depending on the type of photovoltaic cell:
  • Monocrystalline silicon: 15-20% efficient
  • Polycrystalline silicon: 12-15% efficient
  • Thin-film: 7-14% efficient

Solar Panel Installation

• Factors affecting installation:
  • Roof size and orientation
  • Shading from trees, buildings, or other obstacles
  • Local building codes and regulations
• Installation types:
  • Roof-mounted systems: attached directly to the roof
  • Ground-mounted systems: installed on the ground
  • Tracking systems: move to follow the sun's path

Solar Panel Efficiency

• Efficiency measures the percentage of sunlight converted into electricity
• Average efficiency of commercial solar panels: 15-20%
• Factors affecting efficiency:
  • Temperature: high temperatures reduce efficiency
  • Dirt and debris: reduce efficiency by blocking sunlight
  • Angle and orientation: optimal angle and orientation increase efficiency

Energy Storage

• Purpose: store excess energy generated by solar panels for later use
• Types of energy storage:
  • Batteries: deep cycle batteries, lithium-ion batteries
  • Other options: flywheels, capacitors, hydrogen fuel cells
• Importance of energy storage:
  • Provides backup power during outages
  • Enables efficient use of excess energy
  • Stabilizes the grid by smoothing out peak demand

Renewable Energy Systems

• Solar panels are a key component of renewable energy systems
• Other components:
  • Wind turbines
  • Hydroelectric power
  • Geothermal energy
• Benefits of renewable energy systems:
  • Reduces greenhouse gas emissions
  • Diversifies energy sources
  • Increases energy independence