Power from this off-grid cabin comes exclusively from a 1.5 kw PV array on the roof buffered by a bank of 4 Trojan T-105 batteries. The electrical distribution system is mixed AC and DC. A Magnum 4024 inverter provides standard AC power for most of the loads. But a DC fridge, DC emergency lighting, a DC powered solar hot water and heating system, and a gravity water system mean the essentials are supplied independent of the inverter. We installed both the power and heating systems with help from the homeowners.