TASK — 12

Environmental Life Cycle Assessment of Passivated Emitter and Rear Contact (PERC) Photovoltaic Module Technology

The main authors have identified the following 3 Key Takeaways from the report:

  • The LCA study revealed that greenhouse gas emissions (in the Climate Change impact category) range from 25.7 g CO2 eq./kWh for a PV plant in North Italy (with fixed-tilt modules and an average annual yield of 1364 kWh/kWp) to 17.1 g CO2 eq./kWh for a plant in South Italy (equipped with mono-axial solar trackers and an average annual yield of 2096 kWh/kWp), assuming a module lifetime of 25 years.
  • Comparing two different mounting systems (fixed tilt vs. tracker), the analysis shows that using mono-axial solar trackers for module mounting is environmentally preferable, especially at Italian latitudes.
  • Adopting state-of-the-art PERC modules, which are highly efficient, reduces the environmental impact—particularly the carbon footprint—of the electricity produced, compared to systems with older generation modules.