Can solar power be used at home?

To bridge that gap, an inverter converts DC into AC so your solar power is usable at home. Storage comes next. Batteries allow homeowners to store excess energy for use at night or during outages or simply when there is intermittent sunshine, and can be sized based on current and future consumption.

Why are rooftop solar panels more affordable?

For homeowners, these global cost trends translate into more affordable rooftop solar installations. As utility-scale solar prices fall, residential systems also benefit from cheaper panels, lower installation costs, and more competitive financing.

Is rooftop solar cost-competitive?

However, according to a 2025 McKinsey article, rooftop solar remains cost-competitive in many markets, with the lifetime cost of electricity generated often cheaper than grid power.

How long do solar panels last?

Since panels typically last 25 years or more, the next 19 years are essentially free electricity. Regardless of these positive cost trends, upfront solar costs can still feel steep. Especially since several factors such as roof orientation, shading, and expertise of installer can limit viability.

How much does solar cost per kilowatt-hour?

The best way to measure such costs is called the levelized cost of electricity, which is essentially the lifetime cost per unit of electricity generated. The global weighted average LCOE stabilized at $0.043 per kilowatt-hour for utility-scale solar PV. This made solar 41% cheaper than the least-cost fossil fuel option.