The iPhone seems like the perfect accessory for a solar power enthusiast. Right now, you have to navigate a maze of websites such as PV Watts to calculate how much energy you can expect to produce and how many years a solar array will take to pay itself off. The iPhone could cut to the chase. It even looks like a miniature solar panel. And indeed the App Store is filled with solar apps. What a shame that none of them quite measures up.

I downloaded and tried out 20 solar-related iOS apps–all I could find as of July 15th, apart from those that were restricted to customers of certain utilities, were geared toward professional solar installers, or were merely reference books without any ability to calculate. I don’t have an Android or WM7 phone and would love to hear by Twitter or email from users who have tried out solar apps for those devices.