Renewable energy products: Renewable energy (sustainable energy or alternative energy) from natural sources such as sunlight, wind, rain, tides and geothermal heat can be naturally replenished. This source of energy is more environmentally safe than traditional energy. There are many ways to take advantage of renewable energy to power your homes and workplaces. Leonics, alternative energy company, is trusted in renewable energy products, offers the highest quality products and devices to integrate into your renewable energy system projects that will provide the clean, efficient and cost-effective energy for your home or business.