Many people find alternative energy usage. Solar panels , hybrids and others are examples that people are starting towards reducing fossil energy . fossil energy is not available long enough on earth, because it takes so long to create new fossil energy. Maybe millions of years. conserve energy is needed to keep the usage from running out. In addition to saving energy usage, alternative energy sources are being sought for use as a substitute for fossil energy. Batteries we have found where, the battery is the use of renewable energy sources . Because we can combine with solar panels that use energy from sunlight.