🎛️ Race to Zero
Every slider is one source's annual average output in megawatts — a whole year of electricity, not this afternoon's weather. Move one and the others rescale so the country still generates what it generates today. Each source stops at what the country could physically build: the marks under a slider show the realistic and ambitious lines, and past them the price jumps.
Three things have to land at once: carbon below the target, cost within budget (LCOE plus storage and curtailment), and feasibility above the floor — while at least 30 % of supply stays dispatchable, or the lights go out. Nuclear obeys each country's actual policy. Presets are starting points, not answers.
Every value is an annual average in MW. Marks under a slider are the realistic and ambitious build limits for this country; past the last mark the slider stops. 🔒 pins a source so rebalancing leaves it alone.
Each one is a plausible strategy someone actually argues for. None of them passes on its own — that is the point.
Mix and totals: Ember annual data (2025) via countries-insights.json. Build
limits: renewable-capacity-limits.json. Costs: per-country LCOE bands —
grid parity arrives at different points in different
countries. Carbon is lifecycle gCO₂/kWh. Educational model, not a system study, and not
investment advice.