Case study 02 · ECCO2 Solutions · Aug 2019 – Jul 20221 min read

Keeping an interface simple while a product grows.

As ECCO2's only designer and frontend developer, I kept its energy portal simple while it grew 50-fold.

Visit ecco2.ch ↗︎

Built with

React Native
ASP.NET
C#
Databases

15→800+buildings on the platform

2M m²of real estate

5→30people

1designer: me

Real estate managers in a meeting room reviewing a portfolio energy dashboard on a wall screen. Source: ecco2.ch

ResultThinking layer

Showing the result. Switch on the Thinking layer to see how I got there.Showing margin notes, sketches and the options I rejected.

Context and role

more data ≠ more screen

Managers had minutes and one question: are we saving energy?

ECCO2 optimises heating for real estate portfolios with AI. From 2019 to 2022 I did all of its design and frontend work. Every new building and sensor added data.

Growth15 to 800+ buildings
UsersManagers, not energy engineers
PaceA startup going from 5 to 30 people

How I thought about it

hardest part: saying no to new tabs

Where to start

~~A dashboard with every metric~~
~~A list of buildings~~

Savings first, details on demand

The answer goes on top; the data stays one click away.

New features

~~A tab per feature~~
~~A separate tool~~

No new tabs

Every feature earned a place in an existing view, so the portal grew in scope, not in navigation.

Design and code

~~Hand off specs~~
~~Design only in mockups~~

Build it myself

Ideas were tested in code the same week.

What I built

Portfolio / All buildings

Wohnbau AG ▾Oct 2021 – Sep 2022 ▾Export

Energy saved−18%vs weather-adjusted baseline

CO₂ avoided412 tthis heating season

Cost savedCHF 1.24M12 months

Buildings8122.1M m² heated area

Heating energy vs baselineActual Baseline

ONDJFMAMJJAS

Savings by building type

Residential−21%

Office−17%

Mixed use−14%

Schools−9%

BuildingCitySavingsTrendStatus

Wohnüberbauung SonnhaldeBern−21%Optimised

Bürogebäude BahnhofplatzFribourg−17%Optimised

Schulhaus WeissensteinLausanne−9%Check

Residenz SeeblickZürich−19%Optimised

Customer portal. Portfolio total first, then each building, then the data behind it.
Growth-ready structure. Views that held up from 15 to 800+ buildings.
New UI proposals, singled out by the CTO in my work certificate.