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opinion:frater_secessus:panelsizesforinsolation [2022/05/08 14:44]
frater_secessus [Solar panel sizing for different geographical areas] 		opinion:frater_secessus:panelsizesforinsolation [2024/03/20 04:01] (current)
frater_secessus [Amount of solar wattage required per 100Ah of Pb]
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 These are crude estimates about the panel wattage required to fully charge 100Ah of AGM from 50% DoD each day.  See the list of assumptions below the chart.   These are crude estimates about the panel wattage required to fully charge 100Ah of AGM from 50% DoD each day.  See the list of assumptions below the chart.  
  
-^ Location       ^ [[electrical:solar:charge_controller#mppt|MPPT]] only  ^ [[electrical:solar:charge_controller#pwm|PWM]] only  ^ w/ [[electrical:12v:alternator|isolator]]  ^ w/ [[electrical:12v:b2b|DC-DC charger]] or [[electrical:generator|generator]]  ^+^ Location       ^ [[electrical:solar:charge_controller#mppt|MPPT]] only  ^ [[electrical:solar:charge_controller#pwm|PWM]] only  ^ w/ [[electrical:12v:alternator|"isolator"]]  ^ w/ [[electrical:12v:b2b|DC-DC charger]] or [[electrical:generator|generator]]  ^
 | Seattle - avg  | 280w                                                   | 329w                                                 | 140w                                       | 103w                                                                           | | Seattle - avg  | 280w                                                   | 329w                                                 | 140w                                       | 103w                                                                           |
 | Seattle - Dec  | 921w                                                   | 1056w                                                | 528w                                       | 388w                                                                           | | Seattle - Dec  | 921w                                                   | 1056w                                                | 528w                                       | 388w                                                                           |
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 Assumptions: Assumptions:
  
 +  * panel output is temperature-derated according to daily average high at each time/place
   * **no other loads** other than charging are present   * **no other loads** other than charging are present
   * AGM deep cycle battery is discharged to [[electrical:depth_of_discharge|50% DoD]] nightly and [[electrical:12v:charging|fully charged]] the next day.  Charging efficiency 90%.   * AGM deep cycle battery is discharged to [[electrical:depth_of_discharge|50% DoD]] nightly and [[electrical:12v:charging|fully charged]] the next day.  Charging efficiency 90%.
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   * solar-only charging the same number of amps into lithium would require about 10% less panel than AGM due to better charging efficiency.  Lithium can be charged successfully off alternator/generator only so [[electrical:12v:mandatory_solar|no panel would be required]].   * solar-only charging the same number of amps into lithium would require about 10% less panel than AGM due to better charging efficiency.  Lithium can be charged successfully off alternator/generator only so [[electrical:12v:mandatory_solar|no panel would be required]].
  
 +===== further reading =====
 +
 +  * factors affecting [[electrical:solar:output|solar harvest]]
opinion/frater_secessus/panelsizesforinsolation.1652021083.txt.gz ยท Last modified: 2022/05/08 14:44 by frater_secessus

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