While I primarily agree, the problem from a more long term prospective is not intra-day balancing but between summer and winter. Every place that is not near to

While I primarily agree, the problem from a more long term prospective is not intra-day balancing but between summer and winter. Every place that is not near to the equator gets less sun in the time of the year when there is more need for electricity. While there are some concepts with liquid salt etc., it becomes much harder to store such large amounts of energy for long periods.