Having portable, renewable power can be crucial in an emergency. Charge your Goal Zero ® power packs or other devices with this highly efficient 30-watt, monocrystalline solar panel. Charge your power pack faster by connecting 2 or more solar panels together (2 Quick Clips required for each additional Boulder solar panel). Strong tempered glass with aluminum frame for temporary or permanent installation. Use with a Goal Zero portable power pack or solar generator to charge your gear day or night.