Solar Energy Systems Quiz

Questions and Answers

To convert sunlight into electrical energy through the photovoltaic effect

Type of photovoltaic cell used

To store excess energy generated by solar panels for later use

Ground-mounted systems Signup and view all the answers

15-20% Signup and view all the answers

Diversifying energy sources and reducing greenhouse gas emissions Signup and view all the answers

To move the solar panel to face the sun's path Signup and view all the answers

It is the most efficient option Signup and view all the answers

They are the least efficient option Signup and view all the answers

Solar panels Signup and view all the answers

Study Notes

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

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

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

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

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