Where are solar panels made?

~80% of global solar panels are manufactured in China. Significant production also in: Vietnam, Malaysia, India, and South Korea. Some assembly in Europe (Germany, Turkey). Panels sold in the UK are mostly Chinese-manufactured by global brands.

Are solar panels made sustainably?

Improving — Chinese factories increasingly use renewable energy. The manufacturing carbon footprint has halved in 10 years. A panel's manufacturing energy is repaid through clean generation in 3-6 years.

How Solar Panels Are Made

By Home Solar Guide Team|Updated 18 March 2026|educational

Independently written | Evidence-based | Sources cited

Solar panel manufacturing — from silicon to finished product — From sand to silicon to cells to panels — a remarkable manufacturing journey.

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How are solar panels manufactured?

Solar panels are manufactured in 5 steps: (1) Silicon purification — sand is heated to 1,700°C to extract pure silicon. (2) Crystal growing — silicon is melted and grown into a single crystal ingot (monocrystalline). (3) Wafer slicing — the ingot is sliced into thin wafers (150-180 microns). (4) Cell processing — wafers are doped, textured, and metallised to create photovoltaic cells. (5) Module assembly — 60-66 cells are laminated between glass and EVA, framed in aluminium, and tested. The process takes approximately 3 days from silicon to finished panel.