Hybrid nanomaterials could revolutionise energy storage and harvesting. Nanoparticles, nanotubes, and nanowires improve novel energy storage and conversion. Hybrid nanomaterials retain energy better. Organic polymers and inorganic nanoparticles capture more electromagnetic spectrum, increasing hybrid solar cell energy conversion. Future developments may improve hybrid solar cell dependability and scalability. Batteries and supercapacitors use hybrid nanomaterials. Battery energy and charge-discharge speeds increase with graphene hybrids. Researchers may develop cheaper, longer-lasting energy storage devices for battery life and resource restrictions. Demand exists for flexible, wearable energy harvesting and storage. Effective, lightweight, flexible hybrid nanomaterials may help. These power medical and wearable devices under the skin or in clothes. Many energy storage methods fail at high temperatures. New heat-resistant hybrid nanomaterials may help cars, airlines, and industries.