Brownout

A simple power forecast app covering all 10 regions of Japan. View actual demand, forecast, and supply capacity at a glance — plus real-time usage rate.

"Brownout" is an iOS app that lets you easily check the electricity demand forecast (Denki Yoho) for 10 regions across Japan.

View each region's actual demand, forecast, and supply capacity as a daily line chart. Simply switch between regions to instantly check the power situation anywhere from Hokkaido to Okinawa.

[Features] • Displays electricity demand forecasts for all 10 regions of Japan • View actual demand, forecast, and supply capacity in easy-to-read line charts • Shows real-time usage rate • Region switching

[Supported Regions] Hokkaido / Tohoku / Tokyo / Chubu / Hokuriku / Kansai / Chugoku / Shikoku / Kyushu / Okinawa

Data is fetched from the Denki Yoho CSV files published by each regional power company.