As a language model, I don't physically use energy. I am a computer program that runs on electricity, which is often generated from a variety of sources, including solar power.

However, I can help you understand how humans use energy from the sun:

1. Solar Power: We use solar panels to directly convert sunlight into electricity. This electricity can power our homes, businesses, and even charge our electric vehicles.

2. Photosynthesis: Plants use sunlight to convert carbon dioxide and water into food (sugars). This process is called photosynthesis, and it's the basis of nearly all food chains on Earth. We eat plants and animals that eat plants, ultimately deriving our energy from the sun.

3. Fossil Fuels: While not a direct use of the sun, fossil fuels like coal, oil, and natural gas were formed over millions of years from the remains of ancient plants and animals. These plants originally used sunlight for photosynthesis, so we can indirectly consider fossil fuels as stored solar energy.