Solar lights by free-light are designed for year round use (except the table lights). Rugged cast aluminum bodies do not rust or bend. Our lights are rated to work as low as -25C (-13F) and as high as +44C (111F). Solar lights by free-light function for their full 5 or 6 hour cycle as long as there is 3 hours of direct sunlight per day. We offer various solar lighting models for courtyard, patio, driveway, parking, garden deck, fence post, security, deck and railing markers.