Bulk carrier — sails only from FY2012, when the Comtrade series begins
State circles: wood + other biomass generation, EIA
Dimmed mill — ships through a port outside this map (Chesapeake VA, Baton Rouge LA); no lane drawn
Tonnage is a US national figure (Comtrade HS 440131). These eight states hold 74.2% of Census-South pellet capacity.
Utility-scale solar farm — appears in the year it came online
Rooftop cluster — roofs grow in number and size with that state’s real behind-the-meter generation (EIA small-scale PV), not decoration
Bubble = total solar TWh; the pale inner disc is the rooftop share
Tennessee, Alabama and Mississippi rooftop is near-zero and flat for a decade — TVA territory, unlike the retail-rate net metering that drove Florida and the Carolinas
Nuclear station — one dome per operating reactor. Domes appear as units come online and the hall goes grey and struck when a station retires
Bubbles = nuclear generation TWh for the scrubbed year (EIA, fuel NUC)
Crystal River 3 — struck from 2013. The only Southeast reactor lost in this window
Grid: only Entergy’s Arkansas and Mississippi sit inside a Regional Transmission Organization (MISO). The rest of the bloc has none — its utilities trade bilaterally
Turkey Point (1.64 GW, Miami-Dade) is not drawn: this map’s Florida ends near 27°N and the plant sits south of the drawn coastline. Its output is still inside the Florida bubble.
Coal station — the 12 largest of the bloc’s 28, 26.1 of 38.7 GW. Glyph size tracks nameplate
Coal by rail — 89% of receipts. Powder River 50%, Illinois Basin 22%, Appalachia 24% (was 38% in 2010)
Trucked, mine-mouth — Red Hills burns Mississippi lignite at the pit; 4% of receipts, no railroad
River barge — Ohio → Tennessee, and the Tenn-Tom cut to Mobile. 46% of Tennessee’s coal and 43% of Florida’s arrives by water
Seaborne import — Colombian steam coal into Mobile, Tampa & Charleston. 19.9 Mt at the 2007 peak, 0.17 Mt in 2024; the lane fades as it dies
Bubbles = coal generation TWh for the scrubbed year (EIA). The bloc fell 428 → 117 TWh, 2001–2024
Dam — conventional hydro station; the glyph is a dam wall with its powerhouse turbines below
Pumped storage — Raccoon Mtn, Bad Creek, Jocassee, Rocky Mtn, Fairfield. These consume more than they generate: they sell timing, not fuel
TWh bubble — state conventional hydro generation for the scrubbed year (EIA). Pumped storage is excluded, so the bloc’s biggest plants contribute nothing here
Freshet — the seasonal shape. Southeast hydro peaks in winter rain (Jan ~11% of the year), not spring snowmelt; reservoirs run the opposite way, emptied for flood storage and refilled to summer pool
Runoff % — the year against the 27-year mean. FY2007 was 60% (drought), FY2020 was 151%
⚡ Power — gas burned to make electricity; ring pulses (the load that keeps the lights on)
⌂ Cities — residential + commercial gas (heat, water, cooking)
⚙ Industry — industrial gas (process heat, feedstock)
Interstate gas pipeline — flowing particles show direction