The Mirmar product range includes only Tier 1 solar panels Tier 1 solar panels have proven to be a cost-effective combination of reliability and price. Our product range includes products from manufacturers labeled as flagships of solar panels. What does TIER 1 mean? Tier 1 solar panels are built to higher standards (to last longer and produce plenty of solar energy) and have a highly regarded reputation in the solar industry for quality and service, so you can expect TIER 1 manufacturers to honor their product warranties.