The price of a good is almost always higher than the price of the energy invested (usually significantly). Solar panels are used for generating energy. Therefore, if a solar panel is profitable to buy and operate, then it almost certainly generates more energy than it cost to produce.
Solar panels are profitable and are one of the cheapest marginal sources of power in many places. Therefore, solar panels are almost certainly net positive.
Synthetic fuel generation is probably not in the current environment. Storage is not a major problem yet at the current power generation mix. It may become competitive if storage becomes a problem, or if solar drops in price by 66% or more.
Solar panels are profitable and are one of the cheapest marginal sources of power in many places. Therefore, solar panels are almost certainly net positive.
Synthetic fuel generation is probably not in the current environment. Storage is not a major problem yet at the current power generation mix. It may become competitive if storage becomes a problem, or if solar drops in price by 66% or more.