Solar systems can be simple as just a solar module and a load, as in the direct powering of a water pump motor, or more complex as in a system to power a modern home. While a water pump may only need to operate when the sun shines, the home system will need to operate day and night. It also may have to run both AC and DC loads, have reserve power and may include a back-up generator.
In either case, basic solar system principles and elements remain the same. Systems are adapted to meet particular energy requirements by varying the type and quantity of the basic elements. And, as systems are modular, they can always be expanded as power demands increase.
While solar power is often used independently, it may also be used in conjunction with other complementary power sources to provide complete energy solutions.
This kind of of system flexibility, along with proven dependability, has led to solar energy being relied upon for virtually every conceivable use of electricity, from powering small appliances to small towns, to telecommunications sites.
Solar energy's unique attributes of needing no fuel, high durability and reliability and being able to operate for prolong periods without maintenance, make it economical for all types of remote applications. These unique attributes also permit solar energy to be used in places where no other power source is feasible.
These systems provide a high degree of system power availability demanded by critical communications sites.
There are several factors that determine the specific components you will need and how they will be configured in your system. The amount of power needed is only one of the considerations. The system location, the distance of the modules to the load, as well as the type of load and its frequency of use should also be considered in designing your system.
For most solar power systems, you should seek the advice of a qualified Solar System Integrator.