Purchased a large 18kW system with battery unit from them over a year ago. The sales and engineering team done an excellent job going through a variety of potential options to ensure I got the best system to meet our needs with a competitive price. The install quality was top notch with all cable work neat and tidy and the place left clean and tidy. Unfortunately one of the inverters failed recently but the Sure Solar team were quick to assist and replaced under warranty without having to fill in forms or anything else. After sales service is excellent. 100% would recommend using them to anyone.