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Carbon Neutral Engineering Lab
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The lab aims for a decarbonized society with models that link power and transportation.
AboutAbout the lab
Aiming for a decarbonized society from both power and transportation.
The Carbon Neutral Engineering Lab centers its research on building smart grids that can accommodate large-scale introduction of distributed energy resources such as photovoltaic power generation and electric vehicles.
From both the demand and supply sides of energy, the lab aims to develop technologies that solve social issues on the way to a carbon-neutral society and to make practical contributions.
The lab works on models that combine the electrical behavior of distribution networks with the movement of vehicles on transportation networks, and on energy management systems that stabilize distribution networks.
On the lab's website, it is introduced under the name "Yoshizawa Lab."
Key terms
- Distributed energy resources
- Energy facilities placed separately in many locations, such as photovoltaic power generation and electric vehicles. The lab aims to enable their large-scale introduction.
- Smart grid
- A power grid that enables large-scale introduction of distributed energy resources. It is the core of this lab's research.
- Distribution network
- The network of power lines that delivers electricity. It faces problems such as unstable voltage and congestion caused by charging demand.
- Sector coupling
- A method of linking separate fields, such as power and transportation, and considering them together while reflecting their effects on each other.
NewsLab news
View More ↗ResearchResearch themes
Achieving a decarbonized society requires wider introduction of distributed energy resources, but this requires solving problems such as voltage instability in distribution networks and congestion of distribution lines caused by growing charging demand. Through research on building smart grids and on energy management systems (EMS), the lab aims to build a sustainable society.
*Illustrative imagePower-transportation sector coupling model
The lab builds models that precisely reproduce the electrical behavior of distribution networks and the movement of vehicles on transportation networks. Using power, weather, and population flow data as input, it evaluates the effects of introduction in terms of voltage stability, CO2 emissions, and other measures.
*Illustrative imageEvaluating the impact of distributed energy resources on distribution networks
Focusing on electric vehicles, the lab simulates driving and charging/discharging behavior from smartphone GPS positioning data and location-based big data. From this, it estimates the amount of power that electric vehicles can charge and discharge.
Development of energy management systems
The lab aims to develop new stabilization technologies for distribution networks that reduce distribution losses and electricity costs while maintaining power quality, such as voltage and frequency. It is also developing a system that reflects information obtained through two-way coordination between distribution system operators and electric vehicle users.
MembersFaculty
Members of the Carbon Neutral Engineering Lab consist of faculty and students in the doctoral, master's, and undergraduate programs.As of 2026
- Associate ProfessorShinya Yoshizawa
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “SolarPoweredEVCharging” Raysonho @ Open Grid Scheduler / Grid Engine / CC0 (cropped)
- Power-transportation sector coupling model: “Close-up of an electric car charging. Traffic lights in a blurry background” Ivan Radic / CC BY 2.0 (cropped)
- Evaluating the impact of distributed energy resources on distribution networks: “Electric vehicle charging station , Wiesbaden (LRM )” Matti Blume / CC BY-SA 4.0 (cropped)
- Related lab (環境エネルギー材料工学領域): “Thermoelectric Seebeck power module” Gerardtv / CC BY-SA 3.0 (cropped)
- Related lab (環境マネジメント学領域): “Automatic air quality monitoring station, detail, 2020 Százhalombatta” Globetrotter19 / CC BY-SA 3.0 (cropped)
- Related lab (都市エネルギーシステム領域): “Smart grid” Miloš Křivan / CC0 (cropped)
- Related lab (システム量子工学領域): “HD.6D. )” ENERGY.GOV / Public domain (cropped)
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