Remote area Power
Known as Remote Area Power Supplies (RAPS), these systems are becoming more common in less remote areas. They are more complex and expensive than grid connected systems because they need to be self-sufficient.
The system should be designed to meet the required household load. Excess energy generated is stored in batteries for use when the renewable source is not available. The battery bank should be sufficient to provide power for several days.
RAPS systems are usually installed where electricity supply is not available or connection costs are high. However, some people install RAPS to be independent from the mains supply or to have reliable power in areas where blackouts are common.
Stand Alone Systems
When the term "Stand Alone" is used, it suggests that the system has one energy generation source and in most cases it refers to Photovoltaic (solar). In many cases it is impractical to have a system that relies on one energy source for its power. Most systems have a fuelled generator as an extra charging system to boost the battery bank in times of low light or bad weather.
Stand Alone systems can be as small as one solar module battery and regulator, or as large as you like and can produce AC and or DC current
Hybrid Systems
Hybrid Systems come in many forms but always consist of a dual charging system.
In most cases the hybrid system is referred to as a solar/diesel combination but can also incorporate wind and mini hydro inputs.
Although most RAPS have a generator with back up chargers, the Hybrid System tends to be based around larger systems with the Solar Array and Diesel generator sharing a major portion of the load.
In many cases, Hybrid System consist of Solar, Wind, and Diesel.
