International Electrotechnical Commission

Recommendations for renewable energy and hybrid systems for rural electrification – Part 9-1: Integrated systems – Micropower systems - Edition 2.0
 N TS 62257-9-1

Annotation

Decentralized Rural Electrification Systems (DRES) are designed to supply electric power for sites which are not connected to a large interconnected system, or a national grid, in order to meet basic needs.

The majority of these sites are:

• isolated dwellings;

• village houses;

• community services (public lighting, pumping, health centres, places of worship or cultural activities, administrative buildings, etc.);

• economic activities (workshops, micro-industry, etc.).

The DRESs fall into the following three categories:

• process electrification systems (for example, for pumping);

• individual electrification systems (IES) for single users;

• collective electrification systems (CES) for multiple users.

Process or individual electrification systems exclusively consist of two subsystems:

• an electric energy generation subsystem;

• the user's electrical installation.

Collective electrification systems, however, consist of three subsystems:

• an electric energy generation subsystem;