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--- electrical:solar:slim_reserve [2018/06/19 12:27]
frater_secessus created
+++ electrical:solar:slim_reserve [2020/01/19 19:47]
frater_secessus ues
@@ Line 6: / Line 6: @@
+[[electrical:solar:sizing#your_reserve_needs|Days of reserve calculations]] usually assume //poor solar harvest// == //zero solar harvest//.  In reality this is almost always incorrect;  //some// solar power is harvested even under dark overcast or rainy conditions.
+> In light-colored full overcast I see yields 25% of usual.  In dark full overcast, as when storming, I see yields 10% of usual. -- secessus
+===== techniques =====
+Overpaneling 3:1 or more may be required, as well as the addition of alternator or other forms of [[electrical:12v:alt_and_solar|additional charging]].
+Time-shifting loads to [[electrical:solar:nones
 ===== fractional reserves =====
-Days of reserve calculations usually assume //poor solar harvest// == //zero solar harvest//.  In reality this is almost always incorrect;  //some// solar power is harvested.
+A fractional reserve might be a half- or quarter day of battery reserve.  This takes into account the (reduced) contributions from your solar, alternator, etc.  It may also require going into voluntary [[electrical:solar:rationing|power-rationing mode]] when solar output is very low.
+[[electrical:solar:overpaneling|Overpaneling]] [[electrical:solar:panel-bank_ratio|2:1]] or more will help gather more solar energy when running slim reserves in poor insolation.
-FIXME
 ===== zero reserves =====
+In areas with abundant and consistent [[electrical:solar:output|insolation]] like the desert southwest, you may be able to run with no reserves at all.
+sential|periods of excess power]] will help keep the bank fully charged until the sun goes down.

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