Draw your roof outline on the satellite map, choose your panel size, and the tool instantly fills in a grid of panels — then calculates estimated capacity, annual energy output, and CO2 savings. Works for homes and businesses in the UK, Australia, New Zealand, the US, and. Standard Residential Panels Optimize Space and Handling: The industry-standard 60-cell panel dimensions (65″ × 39″ × 1. 5″) aren't arbitrary – they represent the optimal balance between power output, installation ease, and roof space utilization. At 40-46 pounds, they can be safely handled by. Example: 5kW solar system is comprised of 50 100-watt solar panels. Alright, your roof square footage is 1000 sq ft. 5 feet wide and weigh between 40 to 50 pounds. However, the exact dimensions depend heavily on the panel's technology, wattage, and the manufacturer's design. If you're willing to make such an investment, it may be a good idea to compare the cost of going solar versus solar savings.