SEPCO

Hybrid Systems - Utility Connected with Battery Backup for the night use. This is the cheaper solution against Load shedding A combination of the above. This system is connected to the utility grid in case the weather is insufficient for the solar system, but they also have batteries to store electricity in case the utility grid goes down as well (Load-shedding).In this system batteries are fed with solar power as a primary source and will charge the batteries from utility (Wapda) as a second choice (if required) or in the night if battery bank is consumed during the day time. This is the most effective in providing constant, reliable and cost effective electricity.

System includes:1. PV Array: A number of PV panels connected in series and/or in parallel giving a DC output out of the incident irradiance. Orientation and tilt of these panels are important design parameters, as well as shading from surrounding obstructions.

4. Battery bank: can be a single battery or multiple batteries connected together to create essentially one large battery of the required voltage and amp-hour capacity. In some ways the battery configuration and capacity are the most important electrical power decision to make, and a wise choice can help guarantee a steady supply of electrical power as well as a system that is simple to operate and maintain 

5. Inverter: A power converter that "inverts" the DC power from the panels into AC power

Off grid, stand alone solar power solutions for those who are not able or willing to be connected to WAPDA electricity grid. Never pay "Electricity charges" again. All you need is a few solar panels, an inverter, a Charge controller and a battery bank.
The term off-grid refers to not being connected to a grid, mainly used in terms of not being connected to the main or national transmission grid in electricity. In electricity off-grid can be stand alone systems (SHS) or mini-grids typically to provide a smaller community with electricity. Off-grid electrification is an approach to access electricity used in remote areas with little or no access to electricity.
System includes:

3. Battery bank: can be a single battery or multiple batteries connected together to create essentially one large battery of the required voltage and amp-hour capacity. In some ways the battery configuration and capacity are the most important electrical power decision to make, and a wise choice can help guarantee a steady supply of electrical power as well as a system that is simple to operate and maintain.

4. Inverter: A power converter that "inverts" the DC power from the panels into AC power.