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--- opinion:solar:sizing [2022/05/24 15:12]
frater_secessus [days of reserve]
+++ opinion:solar:sizing [2022/05/24 15:13]
frater_secessus [overall economics]
@@ Line 14: / Line 14: @@
 In general, bigger systems (higher wattage panels, bigger controllers, bigger battery banks) cost less per-watt-harvested.
-Broadly speaking, lithium chemistries are most cost-effective when the camping experience is expected to last for many years and the batteries stored inside.((Note that it is false economy to pay for 10 years of battery cycling (as with lithium) if one is going to wreck it in 2 years)).  For shorter projects (traveling around the country for  ≤3 years) in an RV with exterior battery trays the standard T-105 style FLA bank((like 2x 6v Trojan T-105 batts in series for 12v)) may be more cost-effective.  For very short installations ( ≤1 year) marginal batteries found at walmart may be fine. I encourage people to do the //$/kWh math for the situation// rather than relying on the latest trends or loudest voices. Horses for courses.
 ==== days of reserve ====

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