Case study · 2026
Lumen Energy: a home-battery dashboard people open twice a day
Product design for a monitoring app. Fewer charts, one clear number, and a notification strategy that cut support tickets by a third.
Lumen installs home batteries and shipped a monitoring app that showed everything: kilowatt-hours in, out, stored, forecast, tariff. Users opened it once and never came back.
Research
We interviewed 18 households. Nearly all of them wanted the same two answers: am I saving money today, and is anything wrong.
Design
The new home screen is one number, the savings for today, with the detail a tap away. Alerts only fire when the owner can do something about them. We delivered a small design system and shipped the front-end with Lumen's team.
Result
Daily active use went from 9% to 41% of installed systems; support tickets about the app dropped by a third.