An off-grid system is not recommended for the areas where Grid Electricity is available. A hybrid system is most suited for these areas. The energy mix is designed so as to obtain optimum performance from solar energy keeping in line with the economics of the system as well. Our energy mix works on following priority:
- Solar Energy
- Grid Electricity
- Battery Backup
The system works on the principle that during the daytime your load and batteries are charged using the Solar Panels. The grid is there for backup and grid electricity is used only when the solar panels are unable to meet the demand (e.g in early morning, evening, cloudy days etc.). In case the grid is not available (Loadshedding Period), the batteries are used to supply the shortfall. Similarly during night, the entire load is shifted to Grid and batteries are only used to provide the back up when the grid is not available (Loadshedding Period). This system is termed as a HYBRID system is most economical one keeping in view the current situation in Pakistan.
An off-grid system is recommended for areas where there is NO Grid Electricity because the per unit price of electricity from battery back-up is higher than the Grid Electricity but it is still lower than the per unit cost from a Generator. Similarly off-grid systems require large battery banks to be installed which results in a substantial rise in the initial cost of the system as well as the recurring cost of battery replacement every 4-5 years.
Using a Hybrid System allows you following benefits:
1. Independence from Diesel Generator
2. Up to 80 % reduction in Electricity Bill for buildings which use electricity only during daytime like offices, schools etc.
3. Up to 60 % reduction in Electricity Bill for buildings which use electricity all day long like homes, shops, offices etc.