How old solar panels could revolutionize farming for decades to come

Old solar farms could still help farmers long after they stop producing energy. Research shows that even decommissioned panels create a useful microclimate for crops. This approach, called agrivoltaics, is already being tested in several countries.

Agrivoltaic systems place crops beneath solar arrays, offering shade that protects plants from extreme weather. The panels block intense sunlight during heatwaves and reduce damage from hail. Studies suggest this passive shading could boost global crop yields by £435bn.

The method also improves soil health and speeds up nutrient recycling. In Germany, research collaborations are exploring how to make the most of these benefits. Brazil has gone further with pilot projects at the Universidade Federal de Santa Catarina in Florianópolis. These combine solar power, farming, hydrogen production, and fertiliser manufacturing in one system.

Even when solar panels are no longer generating electricity, their structure continues to shelter crops. This means farmers could keep using the land productively for years after a farm's official lifespan ends.

The approach is already working in Germany and Brazil, where trials show its potential. With global food security under pressure, the extra £435bn in yields could make a real difference. Farmers may soon see decommissioned solar farms as a long-term asset rather than an expense.