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Generators & Energy Meters
North American generators come in either 120/240V split phase or strictly 120V output configurations. A 120V renewable energy system with a prewired 120V generator will simplify installation as a 240V generator will with 240V systems.
Using Propylene Glycol in Solar Thermal Systems
The industry standard for solar fluid is a mix of propylene glycol and water. It's non-toxic, biodegradable and relatively stable. However, you should always mix as much water as possible with your choice of glycol product, as simple water is the ideal solar fluid.
Integral Collector Storage
Integral collector storage (ICS) solar hot water systems are the cheapest, simplest installations. Consequently, they have more limitations than other, more robust setups but are a lot easier to set up and maintain. They are open, passive systems.