Solar panels are also referred to as photovoltaic (PV) panels. Built reliable and virtually maintenance free. Technology has also made Pv panels more reliable than looking at. Thus they can now convert power in a tremendously efficient fashion.
An 18 KW in natural gas is much like a 20 KW in propane. Actually, natural gas is not as powerful as propane. Propane is bigger. If you have a 20 KW in propane, it industrial 200Kw diesel generator generator will remain 20 Kw. In natural gas, it drops to 18 KW. It drops 2 KW. Some manufacturers have allowed for that drop but not much. Comfy and practical saying anything about it's. They won't talk about the product. They are not letting it known into the public or through their dealers or manufacturers. They just say that should be capable or same. It isn't the pretty same. The fuel burns differently. Propane burns hotter than natural gas so the item gives the engine less horsepower so therefore it's got less Kw.