How much does a solar light cost for a personal home

Depending on the model, the lights and solar panels can be screwed down permanently or installed temporarily so you take them with you camping as well. Prices range from $10 for a single light/solar panel kit to $60 or more for a more complex system or brighter lights.

These solar security lamps are a steal at less than $30 because you get two of them in the pack. The lights take about six hours to charge in direct sunlight. When the motion sensor is triggered, it will illuminate the area for about 15 seconds. The three-light panels on each piece allow for plenty of lighting in all parts outside your home.

The average cost of a solar system to meet the energy requirements of a 2,500-square-foot house is $18,000–$55,000. This cost depends on the brand of panels used and the individual energy requirements of your family.

On the high end, we talked to a solar customer in Hawaii who spent $100,000 going solar. Dion in Nevada said their 10-kW system cost about $20,000, which is about the national average price for a 7-kW system. What else affects solar installation costs?

As of publishing, the average cost per watt is $2.84. Most solar companies set the price according to the solar system's wattage. A solar installation's “cost per watt” is a little like the “price per square foot” when you buy a house. It helps compare the value of solar energy systems in different sizes.

On average, homeowners with a complete solar system save $41,000 to $62,000 on total avoided energy costs over 25 years. It all depends on what your local utility charges for electricity, according to Robert Flores, a solar expert at The University of California, Irvine's Clean Energy Institute.