A Fujitsu Project for
a Sustainable Future

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日本

Thinking about the quality of the air. CARBON CAKES (logotype)

The cakes that visualize the impact of our actions on the air

01

THE ART
OF MIXING
INGREDIENTS

Pastry Chef Asako Iwayanagi getting ready to bake
Close up of the black mixture of baking ingredients

A black, dirty, misshapen cake with CO2 and PM2.5 in it is in front of you. You’re offered a piece. Do you accept it?

Introducing Carbon Cakes. A physical representation of the impact our actions have on the air we’re breathing in every day.

Clean air is crucial for a sustainable future. But achieving this means finding the right balance between the environment, society, and economy. Because giving everything up in pursuit of clean air is not sustainable.

The real question is: Can we strike that balance? CARBON CAKES, a set of cakes that visualize air quality, delves into the quest for this balance.

Close up of the black glazing covering a gray cake
Close up of the flour being sifted

Recipes to find the optimal balance

02

THE CARBON
RECIPES

The ingredients in the cake reflect levels of CO2 and PM2.5 from environmental data gathered through simulations, showcasing the balance between environmental, social, and economic factors on a radar chart.

*PM2.5 values come from scientific estimates using Social Digital Twin™ simulations"

    • A Digital Rehearsal™ was conducted by setting tolls for the toll road section to be free. This cake was then made based on the environmental data obtained.

      A picture of a beautiful medium size black cake

      • CO2 Emission

        0.58T

      • PM2.5

        4.374NG/M³

      • Consumption Behavior

        ¥10.64

      • Transfer Time

        85.9S

      Using a Social Digital Twin™, we have generated a simulation of a highly populated city's CO2 emissions. Each recipe shown below has used data based on this simulation – a city that produces 460,000 tonnes of CO2 emissions per year, or 4.6 tonnes per person per trip every year.

    • A Digital Rehearsal™ was conducted by setting low tolls for the toll road section. This cake was then made based on the environmental data obtained.

      A picture of a beautiful medium size dark gray cake

      • CO2 Emission

        0.405T

      • PM2.5

        3.973NG/M³

      • Consumption Behavior

        ¥66.31

      • Transfer Time

        92.8S

      Using a Social Digital Twin™, we have generated a simulation of a highly populated city's CO2 emissions. Each recipe shown below has used data based on this simulation – a city that produces 460,000 tonnes of CO2 emissions per year, or 4.6 tonnes per person per trip every year.

    • A Ditigal Rehearsal™ was conducted by setting low tolls for the toll road section and reducing bus fares. This cake was then made based on the environmental data obtained.

      A picture of a beautiful medium size gray cake

      • CO2 Emission

        0.283T

      • PM2.5

        3.770NG/M³

      • Consumption Behavior

        ¥137.56

      • Transfer Time

        135.9S

      Using a Social Digital Twin™, we have generated a simulation of a highly populated city's CO2 emissions. Each recipe shown below has used data based on this simulation – a city that produces 460,000 tonnes of CO2 emissions per year, or 4.6 tonnes per person per trip every year.

    • A Digital Rehearsal™ was conducted by making tolls on the toll road section free, with EV adoption rate set at 30%. This cake was then made based on the environmental data obtained there (*note: the extra cost of EVs is reflected in the economy).

      A picture of a beautiful medium size light gray cake

      • CO2 Emission

        0.238T

      • PM2.5

        3.148NG/M³

      • Consumption Behavior

        ¥39.14

      • Transfer Time

        89.1S

      Using a Social Digital Twin™, we have generated a simulation of a highly populated city's CO2 emissions. Each recipe shown below has used data based on this simulation – a city that produces 460,000 tonnes of CO2 emissions per year, or 4.6 tonnes per person per trip every year.

    • A Digital Rehearsal™ was conducted by setting low tolls for the toll road section, with EV adoption rate set at 30%. This cake was then made based on the environmental data obtained there (*note: the extra cost of EVs is reflected in the economy).

      A picture of a beautiful medium size off-white cake

      • CO2 Emission

        0.181T

      • PM2.5

        2.287NG/M³

      • Consumption Behavior

        ¥296.59

      • Transfer Time

        113.5S

      Using a Social Digital Twin™, we have generated a simulation of a highly populated city's CO2 emissions. Each recipe shown below has used data based on this simulation – a city that produces 460,000 tonnes of CO2 emissions per year, or 4.6 tonnes per person per trip every year.

    • A Digital Rehearsal™ was carried out by setting high tolls for the toll road section. This cake was then made based on the environmental data obtained.

      A picture of a beautiful medium size white cake

      • CO2 Emission

        0.125T

      • PM2.5

        1.859NG/M³

      • Consumption Behavior

        ¥429.59

      • Transfer Time

        279.6S

      Using a Social Digital Twin™, we have generated a simulation of a highly populated city's CO2 emissions. Each recipe shown below has used data based on this simulation – a city that produces 460,000 tonnes of CO2 emissions per year, or 4.6 tonnes per person per trip every year.

Reflecting on the Quality of Our Air - CARBON CAKES

03

THE TASTING

Welcome to CARBON CAKES. For one night only we brought together environmentalists, opinion leaders and R&D from Fujitsu to talk about the future of the air we breathe.

Visitors of CARBON CAKES Event enjoying the cakes.

CARBON CAKES' cooperators

04

CAKE ×
SCIENCE

Hearing the word "delicious" is what drives my passion for baking. The thought of possibly losing that truly is a profound experience.

Profile picture of Asako Iwayanagi

Ms. Asako Iwayanagi

PÂTISSERIE ASAKO IWAYANAGI
Chef-patissier
Japan, Tokyo

After studying Western confectionery on her own and working as a chef-patissier in several confectioneries, she opened her eponymous PÂTISSERIE ASAKO IWAYANAGI in 2015. As of 2024 she runs three shops in the Todoroki area of Setagaya Ward and one in Fukuoka. She is highly interested in creating works that are close to nature and runs several sustainability side projects, such as her 'Yamanashi Old House Project'.

"Innovative technologies play a pivotal role in our battle against poor air quality."

Profile picture of prof. William Vizuete

Dr. William Vizuete

The University of North Carolina at Chapel Hill
Department of Environmental Sciences and Engineering
North Carolina, US

A professor in the Department of Environmental Science and Engineering at the University of North Carolina, Dr. Vizuete's research focuses primarily on the effects of atmospheric ozone and particulate matter on human health. His research plays an important role in developing policies to improve quality of life and provides scientific advice on air purification in urban spaces.

Moving to a carbon-neutral future

05

CARBON
NEUTRALITY

In 2023, Fujitsu updated its materiality to 11 items, including global environmental issues.

About Fujitsu Materiality

Seeing is believing. While we can talk about CO2 and PM2.5 reduction all day long, being able to physically visualize it enables us to find solutions for change – if we could see the amount of CO2 and PM2.5 emitted by the car we just drove, we would be able to visualize how to change our daily lives to lower it. Fujitsu’s Social Digital Twin™ is a technology that enables us to visualize the optimal balance of environmental, societal and economic factors. Fujitsu believes that this is the key to achieving carbon neutrality, and continues to research the Social Digital Twin™, a technology that will drive the company's materiality.

06

Let's consider the optimal balance

Sustainability starts with visualization.

A better society, led by digital

07

SOCIAL
DIGITAL TWIN™

Fujitsu is proceeding with case studies in various notional cities under these six categories.

  • An icon representing Mobility

    Mobility

  • An icon representing Energy/Environment

    Energy/Environment

  • An icon representing Disaster Prevention/Crime

    Disaster Prevention/
    Crime Prevention

  • An icon representing Wellbeing

    Wellbeing

  • An icon representing Water/Food

    Water / Food

  • An icon representing Education/HR Development

    Education /
    HR Development

Air quality is an issue that continues to become more complex. Understanding the factors that create this complexity, and how they continue to shift, is crucial. Fujitsu's Social Digital Twin™ makes this possible. Using data to reproduce people’s changing thoughts and behaviors, this technology can create measures that will lead to a better society.

An image representing Social Digital Twin™UIAn image representing Social Digital Twin™UI

Social Digital Twin™ Demo App

01

Head to the Fujitsu Research Portal.

02

Go to 'List of Technologies', and find 'Fujitsu Social Digital Twin Platform' to review the manual.

03

Try out the simulation by clicking on 'Try demo app' at the bottom of the page.

Different from the road pricing data used to inform the creation of the Carbon Cakes, this demo shows the effect of shared e-scooter deployment. Shared e-scooter optimal placement application verifies the best way to combine CO2 reduction and mobility convenience.

TRY NOW

WE SPENT A LONG TIME
MAKING OUR AIR POLLUTED

  • — NOW IT’S TIME TO MAKE THE SOLUTION 
  • — NOW IT’S TIME TO MAKE THE SOLUTION 
  • — NOW IT’S TIME TO MAKE THE SOLUTION 

Join us for the future of carbon neutrality

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