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Absolutely. Coal has remained consistent as demand for power has risen steadily. Renewables are growing, but remain a tiny slice of the whole generation picture.
Natural gas has become a cheap and reliable replacement for coal over the last 10-15 years as it’s become less expensive to transport. Many coal plants have been converted, even. So as demand has risen, it’s natural gas, not renewables, that is filling the gap.
Long range transmission of AC power is limited to about 40 miles. DC can be transmitted much farther, but the infrastructure is substantially more expensive (because it’s more dangerous), so that’s only done for extreme need.
We aren’t getting away from having many power generators all over the place, so one location-dependent storage solution isn’t going to solve all the problems.