Should I buy a second-hand solar system? Finn Peacock August 23, 2017 04:50 Updated Follow Nope - we explain why here. Related articles What price should I be paying for a solar system? Can renters benefit from solar? Should I buy batteries with my solar? Is the advice you give independent? When is the optimum time to buy solar? If the capital cost of solar keeps going down that reduction in price may more than offset the savings from solar over the next few years. Comments 0 comments Please sign in to leave a comment.