Environment group Zero reports electricity consumption hit 53.1 TWh in 2025, up 3.2% (about 1.7 TWh) from 2024, and that the extra demand was met with increased use of natural‑gas power plants. The group estimates this shift produced roughly an additional one million tonnes of CO2 because renewable generation growth was negligible. The trend matters for energy costs, climate targets and future grid planning — expect pressure for more renewables or demand‑management measures.