One could argue that fossil
fuels and hydro are also solar energy... As for the relative
efficiencies of your named methods you haven't put much effort into even
sketching out the relevant parameters for each and how they might
change from, e.g., small (one meter square) to very large (square
kilometer) installations.
– Jon Custer
Jan 4 at 15:52
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That's why I mention Personal and government. Simply I want to know which is more energy harvesting per squire meter?
– sugunan
Jan 4 at 15:55
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Well, the answer depends on
various parameters. Note that Bill Gates can probably afford a personal
molten salt plant, so personal vs government is not relevant. And
efficiency can be described in many ways, from absolute theoretical
thermodynamic efficiency do $/kWh...
– Jon Custer
Jan 4 at 16:03
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This might be more of an
economic question. Wholesale electricity prices have always fluctuated
throughout the day, and photovoltaic solar is pushing the midday prices
down. Thermal storage of solar heat allows the production of electricity
at night, when prices are higher. For personal use, prices are usually
quoted up front and constant throughout the day.
– MSalters
Jan 4 at 16:26
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Everything engineering
related in the end boils down to economics. Physics is just a means to
satisfy the economics requirements. Why would anybody build thermal
plants? Because they can get more money for the energy off the solar
peak than on-peak. There is also a strong engineering base for
thermodynamic power plants, and those folks like a piece of the pie,
too.
– CuriousOne
Jan 4 at 19:32
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Wednesday 20 July 2016
which is efficient on solar electricity by photo voltaic or thermal
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