We say average because these daily generation numbers are different throughout the year even for the same location.

Thus, the same 1 kW solar PV power plant could generate even beyond 5 kWh during some days in summer and less than 4 kWh during some days in winter. Averaged over the year, the estimated solar panel output could be about 4.5 kWh. There are exceptions to the range of 3-4.5 kWh/day/kW. There are parts of sunny California, Middle East and India that can generate even more than 4.5 kWh of electricity a day on average. And on the other side, some parts of Alaska could generate less than 3 kWh of electricity a day on average!.

How much will a 1 kW system save me?

The amount you would save by installing a 1 kW solar power system will vary depending on: Your location: More sun = more power = Greater savings The amount you pay for power: Obviously the more you pay for power the more money a solar system saves you. Remember when calculating this that the solar will take consumption away from your most expensive bands of power use first. So although there is no one answer for this question that will be true for everyone I would say the range of savings from a 1 kW solar system would be from 7800 Rs per year to 9750 Rs per year in places with high power prices and a lot of sun.