On-grid solar systems are connected to the utility grid, allowing you to use grid power when needed and sell excess energy back to the grid via net metering. They do not require batteries for storage. Off-grid systems are completely independent, relying on batteries to store energy for use when the sun is not shining, and have no connection to the utility grid. Hybrid systems combine elements of both.

Solar panels typically last 25-30 years with gradual efficiency decline, often retaining 80-90% capacity after 25 years. Inverters may need replacement after 10-15 years, but the overall system can endure 30+ years with proper maintenance.

No, solar panels do not produce energy at night as they require sunlight to generate electricity. However, systems with battery storage or grid connection can provide power during nighttime by using stored or grid energy.

Yes, solar panels can generate energy from indirect or diffuse sunlight, such as on cloudy days, though at reduced efficiency (typically 10-25% of full capacity).

Installing solar reduces electricity bills, lowers carbon emissions, provides energy independence, increases property value, and qualifies for government incentives. It's a sustainable investment with long-term savings.

Yes, solar has become more affordable with costs dropping significantly. In India, a typical home system costs ₹40,000-₹60,000 per kW after subsidies, with payback in 4-6 years through bill savings. Financing options and incentives make it accessible.

Yes, but it will be significantly reduced or even zero/negative with net metering, where excess power credits offset usage. You may still pay minimal fixed charges.

Typically, 100-150 square feet per kW for rooftop systems. A 3-5 kW home system needs 300-750 square feet of unshaded roof space.

Solar vendors offer site assessments, system design, installation, maintenance, financing support, monitoring, and recycling services.

Under PM Surya Ghar Muft Bijli Yojana, subsidies are ₹30,000 per kW up to 2 kW, ₹18,000 per kW for additional up to 3 kW, and a maximum of ₹78,000 for systems larger than 3 kW. State-wise variations may apply.