NetZero: Digitisation for the Energy Transition.


In December 2019 Repsol was the first oil company to announce its commitment to being a net zero emissions company by 2050.

To achieve this goal, the company started working on digital solutions that would enable it to know the impact of different actions on its decarbonisation objectives in advance.


An agile and scalable digital tool that enables Repsol´s teams to analyze and select actions in the most efficient way possible. Therefore, facilitating decision-making based on the commitment made by the company.

AI at the service of sustainability

NetZero helps the company in its decision-making process because it enables it to assess the impact of its actions on its road to decarbonisation.

This product allows simulations to be made and the carbon intensity indicator (CII) – the metric that measures a company’s decarbonisation efforts – to be efficiently calculated.

In addition, AI can optimise future scenarios to visualise the emission reduction potential of several technologies.

Goal: to facilitate the decision-making process for decarbonisation

The project to build NetZero was divided in two phases to facilitate the decision-making process.

During the first phase, a system for automating the calculation of the CII according to different time horizons was created based on the calculation methodology and systems used by Repsol. This automation process allows the time teams spend doing calculation tasks to be cut down, thus improving the calculation efficiency.

The second phase consisted in building a system for simulating and optimising the calculation of the CII in order to know the impact of abatement technologies in future scenarios.

  • Decarbonisation levers such as renewable generation, energy efficiency, renewable fuels, etc were simulated to assess their impact on the path to decarbonisation in the short/medium and long terms.
  • The optimisations allow potential scenarios to be generated by means of AI whilst maintaining user-defined decarbonisation levels.

With these functionalities, NetZero enabled Repsol to improve the efficiency of the calculation of its CII and helped it to make strategic decisions.


Improving the digitisation of the entire process for calculating and monitoring the company’s CII, it being possible to analyse the impact of the decarbonisation levers thereon.

Conducting simulations of the different potential scenarios in the short/medium and long terms until 2050 according to the decarbonisation levers.

Optimising the different scenarios according to the reduction potential so as to study the most cost-efficient levers on the road to net-zero emissions by 2050.

Improving the analysis of the data from energy scenarios and comparing and visualizing the latter.

Improving risk management and energy transition opportunities.

“We worked as one team where each member perfectly understood their individual objective, the attainment of which contributed to achieving the project’s end goal.”

Mar Calderón
Sustainability IT&Digital Business Partner en Repsol