In summary, solar energy is a more eco-friendly and cost-effective option than thermal power due to its smaller environmental impact, abundant resources, and reduced greenhouse gas emissions. Solar energy converts sunlight into electricity through photovoltaic cells or solar thermal systems. Its main advantages include zero emissions and solar costs are now well below those of new coal and natural gas plants. The key drawback is intermittency — no generation at night — and upfront. An alternative to PV is solar thermal panels: as opposed to PV generating electricity, thermal panels create heat. When installed on a roof facing the sun, they capture the hot sun rays which are used to heat water stored in a cylinder. Cost Savings: Reduces energy bills, especially for heating applications, and can have a quick payback period in sunny regions.