{
"model": "PVWatts v8, array_type=0, module_type=0, losses=14%, az=180 (matches 02)",
"panel": "Waaree BiN-08-575 bifacial (Grade B) \u2014 BOM",
"bifaciality": 0.8,
"gcr": 0.3,
"gcr_note": "Phase-1 single row -> rear gain >= this estimate; multi-row Phase 2 higher GCR/lower rear gain",
"albedo_note": "PVWatts dataset monthly albedo (incl. snow) used; scalar override had no effect",
"host": "https://developer.nlr.gov",
"system_kw": 8.05,
"lat": 44.560508971890144,
"lon": -72.25854044101756,
"tilt_grid": [
10,
15,
20,
25,
30,
35,
40,
45,
50,
55,
60,
65,
70,
75
],
"baseline_tilt": 55,
"primary_series": "BOM bifacial (ac_annual / ac_monthly); ac_annual_mono = conservative floor",
"by_tilt": [
{
"tilt": 10,
"ac_annual_mono": 9174,
"ac_annual": 10152,
"ac_monthly": [
607.7,
735.0,
1098.3,
1059.6,
1102.4,
1070.7,
1125.1,
1035.1,
882.1,
561.4,
433.2,
441.4
],
"winter": 1784,
"spring": 3260,
"summer": 3231,
"fall": 1877,
"shoulder": 5137,
"bifacial_gain_pct": 10.7
},
{
"tilt": 15,
"ac_annual_mono": 9449,
"ac_annual": 10424,
"ac_monthly": [
650.9,
767.2,
1127.2,
1075.5,
1106.4,
1068.9,
1126.3,
1048.4,
913.6,
593.0,
470.1,
476.2
],
"winter": 1894,
"spring": 3309,
"summer": 3244,
"fall": 1977,
"shoulder": 5286,
"bifacial_gain_pct": 10.3
},
{
"tilt": 20,
"ac_annual_mono": 9656,
"ac_annual": 10622,
"ac_monthly": [
685.1,
793.2,
1149.5,
1084.9,
1104.1,
1061.3,
1121.3,
1055.4,
938.8,
619.9,
502.6,
506.0
],
"winter": 1984,
"spring": 3338,
"summer": 3238,
"fall": 2061,
"shoulder": 5400,
"bifacial_gain_pct": 10.0
},
{
"tilt": 25,
"ac_annual_mono": 9792,
"ac_annual": 10750,
"ac_monthly": [
711.9,
814.9,
1166.4,
1088.9,
1095.5,
1048.0,
1110.0,
1055.7,
957.2,
641.8,
530.0,
529.5
],
"winter": 2056,
"spring": 3351,
"summer": 3214,
"fall": 2129,
"shoulder": 5480,
"bifacial_gain_pct": 9.8
},
{
"tilt": 30,
"ac_annual_mono": 9860,
"ac_annual": 10825,
"ac_monthly": [
734.6,
831.6,
1178.9,
1089.2,
1082.5,
1031.1,
1094.8,
1051.4,
969.8,
660.0,
552.9,
548.0
],
"winter": 2114,
"spring": 3351,
"summer": 3177,
"fall": 2183,
"shoulder": 5533,
"bifacial_gain_pct": 9.8
},
{
"tilt": 35,
"ac_annual_mono": 9864,
"ac_annual": 10839,
"ac_monthly": [
752.1,
843.7,
1187.1,
1084.7,
1064.1,
1008.8,
1074.0,
1040.9,
976.0,
673.7,
571.4,
562.5
],
"winter": 2158,
"spring": 3336,
"summer": 3124,
"fall": 2221,
"shoulder": 5557,
"bifacial_gain_pct": 9.9
},
{
"tilt": 40,
"ac_annual_mono": 9804,
"ac_annual": 10805,
"ac_monthly": [
765.3,
852.9,
1192.6,
1076.6,
1041.3,
982.5,
1048.3,
1025.2,
976.9,
683.7,
586.2,
573.3
],
"winter": 2192,
"spring": 3310,
"summer": 3056,
"fall": 2247,
"shoulder": 5557,
"bifacial_gain_pct": 10.2
},
{
"tilt": 45,
"ac_annual_mono": 9689,
"ac_annual": 10725,
"ac_monthly": [
775.5,
859.2,
1194.7,
1064.7,
1013.9,
951.9,
1018.2,
1004.6,
972.9,
689.9,
597.4,
581.7
],
"winter": 2216,
"spring": 3273,
"summer": 2975,
"fall": 2260,
"shoulder": 5534,
"bifacial_gain_pct": 10.7
},
{
"tilt": 50,
"ac_annual_mono": 9522,
"ac_annual": 10605,
"ac_monthly": [
783.6,
863.7,
1194.6,
1049.3,
981.6,
917.1,
984.0,
979.4,
964.3,
692.8,
605.7,
588.8
],
"winter": 2236,
"spring": 3226,
"summer": 2880,
"fall": 2263,
"shoulder": 5488,
"bifacial_gain_pct": 11.4
},
{
"tilt": 55,
"ac_annual_mono": 9310,
"ac_annual": 10446,
"ac_monthly": [
789.4,
866.1,
1191.6,
1030.2,
945.2,
878.9,
945.7,
949.7,
951.0,
692.5,
611.2,
594.5
],
"winter": 2250,
"spring": 3167,
"summer": 2774,
"fall": 2255,
"shoulder": 5422,
"bifacial_gain_pct": 12.2
},
{
"tilt": 60,
"ac_annual_mono": 9058,
"ac_annual": 10238,
"ac_monthly": [
793.1,
866.5,
1185.7,
1006.4,
903.4,
835.6,
902.0,
913.8,
931.3,
688.4,
613.8,
598.6
],
"winter": 2258,
"spring": 3096,
"summer": 2651,
"fall": 2234,
"shoulder": 5329,
"bifacial_gain_pct": 13.0
},
{
"tilt": 65,
"ac_annual_mono": 8769,
"ac_annual": 10004,
"ac_monthly": [
795.2,
865.2,
1177.8,
980.1,
858.8,
790.6,
857.2,
874.8,
907.4,
681.7,
614.4,
601.2
],
"winter": 2262,
"spring": 3017,
"summer": 2523,
"fall": 2204,
"shoulder": 5220,
"bifacial_gain_pct": 14.1
},
{
"tilt": 70,
"ac_annual_mono": 8465,
"ac_annual": 9741,
"ac_monthly": [
796.0,
862.8,
1168.4,
950.6,
811.1,
743.5,
810.5,
832.5,
878.5,
672.0,
613.1,
602.6
],
"winter": 2261,
"spring": 2930,
"summer": 2386,
"fall": 2164,
"shoulder": 5094,
"bifacial_gain_pct": 15.1
},
{
"tilt": 75,
"ac_annual_mono": 8197,
"ac_annual": 9459,
"ac_monthly": [
795.8,
859.6,
1158.1,
919.4,
761.7,
694.7,
762.3,
788.2,
845.8,
659.5,
610.3,
603.2
],
"winter": 2259,
"spring": 2839,
"summer": 2245,
"fall": 2116,
"shoulder": 4955,
"bifacial_gain_pct": 15.4
}
],
"annual_optimal": {
"tilt": 35,
"ac_annual": 10839
},
"season_optimal": {
"winter": {
"tilt": 65,
"kwh": 2262
},
"spring": {
"tilt": 25,
"kwh": 3351
},
"summer": {
"tilt": 15,
"kwh": 3244
},
"fall": {
"tilt": 50,
"kwh": 2263
}
},
"shoulder_optimal": {
"tilt": 35,
"kwh": 5557
},
"fixed_55": {
"ac_annual": 10446,
"ac_annual_mono": 9310,
"bifacial_gain_pct": 12.2,
"ac_monthly": [
789.4,
866.1,
1191.6,
1030.2,
945.2,
878.9,
945.7,
949.7,
951.0,
692.5,
611.2,
594.5
],
"winter": 2250,
"spring": 3167,
"summer": 2774,
"fall": 2255,
"shoulder": 5422
},
"schedules": {
"fixed_55": 10446,
"fixed_annual_optimal": {
"tilt": 35,
"annual_kwh": 10839
},
"two_position": {
"summer_half_tilt": 20,
"winter_half_tilt": 60,
"annual_kwh": 11112
},
"four_position": {
"per_season": {
"winter": {
"tilt": 65,
"kwh": 2262
},
"spring": {
"tilt": 25,
"kwh": 3351
},
"summer": {
"tilt": 15,
"kwh": 3244
},
"fall": {
"tilt": 50,
"kwh": 2263
}
},
"annual_kwh": 11120
},
"four_position_recommended": {
"per_season_tilt": {
"winter": 55,
"spring": 35,
"summer": 30,
"fall": 45
},
"annual_kwh": 11023
}
},
"deltas_vs_fixed55": {
"fixed_annual_optimal": {
"kwh": 393,
"pct": 3.76
},
"two_position": {
"kwh": 666,
"pct": 6.38
},
"four_position": {
"kwh": 674,
"pct": 6.45
},
"four_position_recommended": {
"kwh": 577,
"pct": 5.52
},
"shoulder_only_at_shoulder_opt": {
"tilt": 35,
"kwh": 135,
"pct": 2.49,
"note": "spring+fall energy only (BOM bifacial), shoulder-optimal tilt vs fixed 55"
}
}
}