Performance of solar home system

Estimation of PV Stand-alone System electricity generation for the chosen location


Location: 45�32'9" North, 7�6'39" East, Elevation: 2242 m a.s.l.,
Nominal power of the PV system: 480 W
Inclination of modules: 35 deg.
Battery size : 12 V, 500 Ah
Discharge cutoff limit (%) 40 %
Consumption per day: 512 Wh
Number of days used for the calculation:1801
Percentage of days with fully charged battery 68%
Average energy not captured due to full battery: 1101Wh/day
Percentage of days the battery became fully discharged: 2%
Average energy missing: 249Wh/day


The graph and table below show the (estimated) daily amount of electric power you can expect in each month from a Solar Home PV system with the properties you entered. It also shows the yearly average production per day.

MonthEd Ff Fe
Jan 525.0 336
Feb 508.0 520
Mar 511.0 520
Apr 519.0 750
May 515.0 860
Jun 512.0 960
Jul 512.0 990
Aug 512.0 990
Sep 511.0 910
Oct 504.0 830
Nov 487.0 314
Dec 454.0 1512
Year 506.6
Ed: Average energy production per day (Wh/day)
Ff: Percentage of days when battery became full (%)
Fe: Percentage of days when battery became empty (%)

Cs Cb
40-46 1
46-52 1
52-58 1
58-64 1
64-70 1
70-76 2
76-82 3
82-88 5
88-94 10
94-100 71
Cs: Charge state at end of each hour (%)
Cb: Percentage of days with this charge state (%)

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Probability of battery charge state at the end of day



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