Photo: Baltimore County Solar didn’t just show up in 2025 – it carried the grid. A new analysis from global energy think tank Ember shows that solar power accounted for 61% of the growth in US electricity demand last year, highlighting how central solar has become as power demand accelerates. US electricity demand jumped by 135 terawatt-hours (TWh) in 2025, a 3.1% increase, the fourth‑largest annual rise of the past decade. Over that same period, solar generation grew by a record 83 TWh – a 27% ...