Saving money and lowering carbon —
it holds both.
Two motivations, side by side. The app shows both and lets you choose.
Works everywhere, immediately.
Needs only your location and which appliances you have. Today’s grid as a clean / cheap timeline, with plain nudges.
A quiet diagnosis of your home.
Import your own usage and it reads it the way a good electrician would — entirely on-device.
Why no one shows you this
Utility apps graph what you used. Market-price apps ignore carbon. Carbon trackers use last year's average. Each shows a piece — Uchi Energy puts your real usage on the live grid: carbon and price, through the day.
Real numbers, right now — not marketing.
The very data the app runs on — carbon and price for every Japanese grid area, straight from JEPX and the regional operators. Check it against the source yourself.
As of
8/14 05:30 JST ·
direct from JEPX & the regional TSOs, refreshed through the day.
≈ carbon estimated where a region publishes no live fuel split (Kyushu).
Nothing leaves your phone.
Your location, your appliances, your imported usage — analysed on-device. No account required, no upload, no exceptions. Privacy is the product, not a setting.
Ohayo Studio.
Solo studio, in Obi, an old samurai town of Miyazaki.
Ohayo Studio makes apps and services. We build them for ourselves first — each one starts as something we personally wanted, and we figure others might find value in it too. After years of client work, Uchi Energy is one of the apps we are building.