Off-grid solar power systems (Solar with batteries but without a grid connection)
- These are the most expensive type as additional battery cost is incurred to provide a backup of up to 48 hours for a normal household or business functioning (including autonomy for a 1-2 rainy days)
- This type of installation are for areas that have no grid connection but are not very useful for urban areas.
- These systems are usually sized to not include air conditioning as it is only a seasonal load. A larger system installed to meet peak summer demand will lead to wastage of power in the winters, making it un-economical.
- Savings from the system lead to a payback period of up to 10 years. After that, you get free power for 10 more years