What you're looking at. Each stream is one end-use's hourly signature; flip a control and the curve recomposes. Shaded columns are time-of-use price periods. Dashed line = net grid draw before the battery; solid line = after it shifts energy into the evening peak. CO₂ now weights each imported kWh by that hour's local grid intensity — dirtier at the evening peak, cleanest midday — so when you draw changes the number. The grey ribbon is now a real Monte-Carlo band: each uncertain input is sampled and the day re-run; the spread is the result. (Input uncertainties are still placeholder values.)
⚡ All gas appliances gone — daily gas fixed charge removed.