Dense is a subjective term, and solar is without a doubt a dense enough energy source.
Compare the amount of land needed to power the US with solar to the amount we use to brew a small amount of ethanol as a minor energy sourced. We can completely power the US with a fraction of the land that we currently use as a subsidy for corn farmers, who grow more corn than we can eat.
Compare the amount of land needed to power the US with solar to the amount we use to brew a small amount of ethanol as a minor energy sourced. We can completely power the US with a fraction of the land that we currently use as a subsidy for corn farmers, who grow more corn than we can eat.