Peak power:250watt Cell:156mm*156mm*60pcs mono Max power voltage:29.4v Max power current:8.5a Open circuit voltage:36.3v Short circuit current:9.18a Maximum system voltage:1000vdc Dimension:1640*990*50mm Weight:18kg 10 years 90% output power and 25 years 80% output power Otherwise we also offer solar panel from 5watts to 300watts.We have certification:tuv, ce, ISO9000. We guarantee the product quality.Most important, we will give you a competitive price. 1640*990*50mm 18kg