The size of the solar panel system depends on factors such as energy consumption, available roof space, local sunlight conditions, and budget.

Subsidies for solar panels may include tax credits, grants, rebates, feed-in tariffs, or net metering programs, depending on the policies of the governing authority.

Net metering allows solar panel owners to receive credits for excess electricity generated and exported to the grid, which can offset electricity bills during periods of low sunlight.

Solar panels typically require minimal maintenance, such as occasional cleaning to remove dirt and debris. Inverter maintenance may also be necessary.