China Share of Global Solar PV Cell Production

China's share of global solar photovoltaic cell manufacturing. The canonical example of an electric-tech-stack industry where China went from competitor to monopoly while US producers exited. Source: IEA Solar PV Global Supply Chains.

Exclude COVID

85.0%

Trend YoY growth is +2.6%, accelerating by 20 bps/year over the last 7Y. Latest: +2.0%, 58 bps below trend, a 0.5σ deviation. The latest YoY reading is depressed by 62 bps due to an tough comparison base from 2022.

Level

YoY Change

y = 1.2% + 20 bps/yr · t

Deviation from trend

Forecast

Projected value by forecast vintage (%)

Projected value (%)

Forecast made in20172018201920202021202220232024202520262027MAPE
201773.076.079.081.082.087.091.094.0104.0114.9126.9167%
201875.077.779.279.784.287.790.295.8102.0108.788%
201976.077.577.581.584.586.588.089.591.046%
202076.076.380.082.784.483.582.380.8103%
202180.082.485.687.890.894.097.425%
202283.086.589.093.598.5104.075%
202385.088.592.597.0102.0
202488.592.597.0102.0

YoY change forecast

Forecast made in20172018201920202021202220232024202520262027MAPE
2017+2.0%+3.0%+4.0%+5.0%+6.0%+7.0%+8.0%+9.0%+10.0%+11.0%+12.0%167%
2018+2.0%+2.7%+3.2%+3.7%+4.2%+4.7%+5.2%+5.7%+6.2%+6.7%88%
2019+1.0%+1.5%+1.5%+1.5%+1.5%+1.5%+1.5%+1.5%+1.5%46%
2020+0.0%+0.3%+0.0%-0.3%-0.6%-0.9%-1.2%-1.5%103%
2021+4.0%+2.4%+2.6%+2.8%+3.0%+3.2%+3.4%25%
2022+3.0%+3.5%+4.0%+4.5%+5.0%+5.5%75%
2023+2.0%+3.5%+4.0%+4.5%+5.0%
2024+3.5%+4.0%+4.5%+5.0%

Forecasts use ordinary least-squares linear regression fitted to the YoY change series over a rolling 5Y window. Each row shows a vintage — the forecast as it would have appeared at that point in time. Projected values apply the forecasted YoY change to the prior year's level, chaining forward where actuals are unavailable. MAPE measures forecast accuracy against realized values. These are mechanical trend extrapolations, not economic models.