If the plant is in good shape, I can see them repurposing the plant as opposed to outright demolishing it.
With LNG getting so cheap and it already has built interconnects with the regional grid, I wouldn't be surprised if this is re-purposed into either a peaker plant, or a full time LNG burner.
When they decommed the coal plant down in Enterprise, FL on Lake Monroe, they simply tore down the coal infrastructure, cleaned up the brownfield and made a peaker out of it.
With Jaxport becoming an LNG import hub, I can see some of the economics working in their favor.
Another option would be to convert it to a biomass burner. One of the largest exporters of biomass (Georgia Biomass) is just a few miles north of us in Waycross and exports out of Savannah.
https://www.southernenvironment.org/uploads/maps/Wood_Pellet_Exports_2015_0202.pdfBut not everyone is behind that approach.
http://www.nrdc.org/energy/files/wood-pellet-biomass-pollution-FS.pdfThe biggest issue is that the creation of the pellets creates more pollution than the combustion of them does. The same problem electric/hybrid cars have.