About Solar Electricity
Heating vs. Electricity
Technology
Applications
Economic Viability
Lifetime of a Photovoltaic System
Maintenance Requirements
Comparing Costs
System Design and Sizing
Brief History
The Future

Economic Viability

System Lifetime
The standard type of crystalline silicon photovoltaic module will last for at least 20 years if installed properly. The battery will last 5-12 years if selected and looked after properly. The lifetime depends on the type of system and the operating temperature. Read more...

Maintenance
The photovoltaic modules do not require any maintenance. They are also self-cleaning. Most unmanned sites need to be checked only once a year. Read more...

Costs - Solar Electricity vs. Other Power Sources
You should look not just at the initial cost, but also at the costs of running the power source for the whole intended lifetime. Solar electricity systems have very low running costs. Read more...