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PLSC 441 · Week 8 · Renewable energy, international

Where the panels go

China makes roughly four of every five solar panels sold in the world. This tool follows where its panel exports landed from 2017 through 2026, for the biggest markets and for each of our 24 case-study countries. It lines each swing up against four kinds of drivers: Beijing's own policy, trade barriers, global shocks, and domestic policy and demand in the buying country. Pick a year, pick a country, and ask what moved the flow.

2024export year
2017202020232026
Exhibit 1 · Panel exports by first destination

One factory floor, many harbors

Ribbon width is the capacity of panels shipped that year, in gigawatts (GW). One GW is 1,000 megawatts (MW), roughly a large power plant. Major markets shows where most panels go. Class countries shows our 24 case-study countries; many are measured in megawatts, so read the labels. In GW mode the scale stays the same every year; in Share % mode each year fills the same height. 2026 is a projection (see the notes). Click a ribbon to open that country below.

Source: Ember analysis of Chinese customs data. "First destination" means where the ship first unloads: Rotterdam counts as the Netherlands even when panels end up in Germany.

Exhibit 2 · Close-up

What moved the flow?

The solid line is panels from China. The dashed grey line, where it appears, is cells and wafers: parts that a factory in the buying country assembles into panels (tracked from 2022). The strip underneath is the panel price. Markers along the top are dated events; click one, or a card, to read it. Click anywhere on the chart to jump to that year.

The record

Exhibit 3 · Every country, own scale

Booms, busts, and detours

Each panel has its own vertical scale, so shapes are comparable but heights are not. Look for steady growth, a spike then a collapse, lumpy one-project years, and flows that switch from panels to cells. The toggle in Exhibit 1 decides which set appears here.

In class · 10 minutes

Diagnose the swing

For each swing, pick the driver you think mattered most, then check. Several have more than one cause; the explanation says which one did the most work. "Show me" sets the charts above to the right country and year.

Discussion

Take it to the readings

  1. The panel price fell by nearly three-quarters from 2017 to 2025. Some countries barely responded and others exploded. What besides price decides whether cheap panels get installed?VoxDev, "Ray of hope: the rise of solar energy in China"
  2. Pakistan's imports took off while its grid was failing and tariffs were rising. Afghanistan's jumped after the Taliban took power. Is solar in these places climate policy, energy security, or an exit from the state? Who loses when wealthier users leave the grid?Volts, "Pakistan's solar boom"; NPR; VoxDev on Pakistan's power contracts
  3. India blocked Chinese panels, then bought Chinese cells instead, then blocked those too. Egypt, Kenya and Nigeria started buying cells in 2026. Is local assembly real industrial policy or a new label on Chinese supply chains?Dubash, Swain and Bhatia, "The Disruptive Politics of Renewable Energy"; VoxDev on Vietnam
  4. Find your case-study country in the Class countries view. Which of the four drivers best explains its curve? If its imports are tiny, is that because demand is low, because the state controls the power sector, or because sanctions or conflict block trade?
Reading 2026

A spike, then a slump

Q1: Beijing said on January 9 it would end the 9% export VAT rebate on April 1. Then the war with Iran closed the Strait of Hormuz and fuel prices jumped. In March, China shipped 66 GW of solar products (panels, cells and wafers), more than twice a normal month.

April–August: panel exports fell back to about 16 GW a month. January–August panels totaled 150 GW, down 10% from the same months of 2025.

The shift to watch: in January–August 2026 China shipped more cells and wafers (154 GW) than finished panels (150 GW). Africa took 39 GW of solar products in those eight months, nearly three times as much as a year earlier, much of it as cells for new factories in Egypt, Kenya and Nigeria. Panel-only data understates China's role more every year.

About the numbers

Every figure from 2017 to August 2026 comes from Ember's China solar exports dataset, which converts Chinese customs records (export value by destination) into capacity using a monthly panel price. Ember's price series is the one drawn in the price strip.

  • 2026 is a projection: actual January–August shipments plus September–December at the July–August pace. It is drawn dashed. The close-up tiles show the January–August actual.
  • First destination, not final use. Europe's figures are inflated by the Netherlands (re-export hub); small countries can be supplied through neighbors and will look smaller than their installations.
  • Small markets are lumpy. In countries importing a few megawatts a year, one project shipment can double or halve the series.
  • Cells and wafers are tracked separately from 2022, when customs codes changed.
  • Events before 2017 appear in the record as background only.

Sources: Ember, China solar exports data (downloaded October 13, 2026) · Ember, March 2026 record · InfoLink, July 2026 · InfoLink, June 2026 · Mercom, VAT rebate