Blending for Cepsa:

From Excel Hell to Human-Centred Clarity

I redesigned their internal fuel mixing tool with and for the technicians — turning a cluttered interface into something intuitive, accessible, and ready for real-life use.

Client
Cepsa (now Moeve)

Timeline
8 weeks

My role
UX/UI Designer (solo)

Tools
Figma, Miro, MIMO Design System

🪄 Before & After

From cluttered spreadsheets to a platform technicians actually want to use.
No more copy-paste chaos or colour-coded cells only one person understood.
The new interface made fuel blending intuitive, clear and fully traceable — even in high-pressure environments.

Old Excel spreadsheet interface used for fuel blending
Before
Modern fuel blending platform designed for technicians
After

Before & After

From cluttered spreadsheets to a platform technicians actually want to use.

Screenshot of the original fuel blending spreadsheet used by technicians at Cepsa (now Moeve), showing complex fields and a cluttered interface.
Final interface of the new Cepsa (now Moeve) Blending platform — clean layout, simplified fuel mix calculation, and accessible data visualisation.
Laptop screen displaying the homepage of the Blending platform with a notification visible.
Blur Old Excel File in Black and White

What is the Blending Platform?

The Blending platform is a digital tool that I designed to streamline the fuel mixing process for technicians. By replacing the outdated Excel method, I aimed to create a user-friendly application that allows technicians to develop more effective and sustainable fuel blends.

The platform includes features such as calculating blend characteristics, saving mixtures for future use, and generating reports, all within a desktop-friendly interface. I utilised Cepsa’s design system to ensure a consistent and intuitive user experience.

Main Goal of the Platform

The primary goal of the Blending platform is to enhance the efficiency and sustainability of fuel mixing operations. My aim was to provide a more intuitive solution that reduces the time and effort required for technicians to create blends. Ultimately, I want this platform to lead to better fuel mix quality and promote more sustainable practices within the industry.

A laptop displaying a screen with saved blend recipes, ready for download.

Methodology Used

To develop the platform, I followed a user-centred design approach. With the help of the research team, we conducted interviews with technicians to understand their needs and challenges. This feedback informed my design process, allowing me to create a platform that truly meets user requirements. I collaborated closely with the data and development teams, and throughout the project, I conducted usability testing to ensure the final product was both effective and user-friendly.

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