Photovoltaic Backsheet Films

Longer Panel Lifetime Provides Greater Investment Returns

Backsheets play a critical role in protecting PV modules and delivering needed module lifetime.

DuPont™ Tedlar® polyvinyl fluoride (PVF) film is the only backsheet material proven to protect solar panels in the field for more than 30 years, even in harsh environmental conditions. Unproven or inferior materials may save a few cents per watt, but five years of focused field studies are proving these materials can put system performance, payback and safety at risk. Investment returns for solar can increase by more than 30% if the lifetime of the solar system can be increased from 10 to 25 years.

DuPont Photovoltaic Solutions has long been an advocate for more stringent quality standards to help ensure the safe and reliable performance of solar panels around the world.  A shared international standard based on durability testing parameters and data that reflect real-world conditions would help safeguard the industry against catastrophic failures and the threat of premature power degradation. 

When panels fail or don’t perform as expected over their 25 year lifetimes, diminishing investment returns and disappointing consumers, they have the potential to give the solar industry a black eye at a critical point in its growth.

Improved and simplified standards and the use of field-proven materials will help ensure reliable, long term system performance, payback and safety in the solar industry.