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2. Efficiency Ratings The efficiency of solar panels, measured by their ability to convert sunlight into electricity, greatly affects their price. Panels with higher efficiency ratings often come at a premium.

Lightweight solar panels are designed to be significantly lighter than traditional solar panels, which typically weigh between 40 to 50 pounds per panel. Innovations in materials, such as the use of advanced polymers, flexible thin-film technology, and new manufacturing processes, have made it possible to produce solar panels that are both efficient and lightweight. Most lightweight panels weigh less than 20 pounds, making them easier to handle, transport, and install.

3. Brand Reputation Established brands with a track record of reliability and performance often charge more for their products. Newer or less-known brands may offer lower prices to attract customers but could come with varying levels of quality assurance.