ワットストア is a lifestyle app available for iPhone that offers a unique shopping experience for solar power. Developed by CHANGE THE WORLD Inc., this free app allows users to purchase solar power in units of watts. Currently, the purchase price for one watt of solar power is approximately 300 yen.

The app operates under the FIT (Feed-in Tariff) system, guaranteeing a fixed power purchase price for 20 years. As a result, owners of watts will receive Change Coins every month based on their generated electricity. These Change Coins can be redeemed for cash or Amazon gift cards. The projected sales income after 20 years is estimated to be around 135%. So, if you own 1 million yen worth of watts, you can expect to earn 1.35 million yen from selling the generated electricity after 20 years.

To purchase watts, users can choose between bank transfer or credit card payment (currently only bank transfer is available). With its innovative concept, ワットストア offers a unique way to support renewable energy and earn income from solar power.