The Balance between Cost and Efficiency Besides monocrystalline solar modules, SPEEDY offers high quality polycrystalline solar modules as well. The efficiency of our polycrystalline is even higher than the monocrystalline modules from other suppliers, but the cost is lower.  Normally there are different requirements for cost and efficiency for different projects. For a bidder or an installer, it is easy to find out a suitable solution by our various models with different power, efficiency and cost.  Benefits for You● Various models for choice, power output from 250W to 330W● Certificated by TUV and ETL testing organization under extreme conditions● Good performance under weak light, which has been tested and approved by third-party.● Guarantee from 0 to +6W as power tolerance, customers can get up to 5.8% power more than declared output.● 100% EL test to make sure higher quality.● Pass the Salt-mist Corrosion Test, Fire Test, Ammonia Test, Potential Induced Degradation (PID) Test and   Carbon Footprint assessment in TUV.‍‍‍‍PVTeach's Linear Performance WarrantyFor a period of 25 years commencing on the Warranty Start Data, loss of power output of the normal power output at Standard Test Conditions (STC) for the product(s) shall not exceed:1. For polycrystalline products: 2% in the first year, thereafter 0.67% per year, ending with 82% in the 25th year after the Warranty Start Date.2. For monocrystalline products: 3% in the first year, thereafter 0.67% per year, ending with 81% in the 25th year after the Warranty Start Date.The Warranty Start Date should be defined as the date of than Bill of Lading Date.