In order to estimate the yearly energy production of a solar module, one simply multiplies the estimated module energy output (from one sun hour exposure-1000W/m2 over one hour), 71 Watt hours AC, by the amount of Sun Hours for the particular location, 5.511. This results in approximately 391 Watt hours AC per day or .391 kWh AC per day.

391 Watt hours AC per day (71 Watt hours AC x 5.5)

When estimating yearly energy production, the estimated daily energy production, .391 kWh AC, is multiplied by the total number of days in the year, 365.
This results in approximately 142 kWh AC energy production.

142 kWh/year (.391 kWh/day x 365 days)

One 100 Watt DC module will produce approximately 142 kilowatt hours AC of energy under the specified conditions in this example.