From EVs to Backup Power Sources
In an era where climate change and sustainable energy solutions have become critical issues, Electric Vehicles (EVs) have emerged as a technology that addresses greenhouse gas emissions. Simultaneously, EVs hold exciting potential to function as “mobile batteries” or Vehicle-to-Grid (V2G) systems, serving as backup power sources for homes and communities. They allow stored electricity in their batteries to be reused when needed, such as during power outages or periods of high energy demand.
What is Vehicle-to-Grid (V2G) Technology?
V2G is a system enabling EVs to charge from the power grid and send energy back to the grid when required, using bi-directional charging technology. This allows EVs to act as backup power sources for electrical systems, enhancing grid stability and efficiency during peak demand or emergencies like power outages. Additionally, V2G can help reduce household electricity costs, as energy stored in EV batteries can be used instead of drawing expensive power from the grid during peak pricing hours.
Global Adoption of V2G
Many countries have begun experimenting with and implementing Vehicle-to-Grid (V2G) and Vehicle-to-Home (V2H) technologies to enhance energy flexibility and reduce electricity bills. Examples from Japan and Australia highlight the development of these technologies for both commercial and community benefits.
- Japan
Japan is a leader in V2G technology, with government support following the 2011 earthquake and tsunami that emphasized the importance of backup power for energy security. Nissan, in collaboration with Tokyo Electric Power Company (TEPCO), launched the “Leaf to Home” project, using Nissan Leaf vehicles as backup power sources for homes and communities. They also tested V2G in communities, allowing EV owners to send energy back to the grid during high demand periods. Japan has developed the CHAdeMO charging standard, enabling efficient bi-directional charging for full V2G functionality.
- Australia
Australia, known for its widespread adoption of solar panels, has started utilizing V2H to increase energy flexibility. Nissan and Wallbox have tested the Quasar bi-directional charger, which allows EV batteries to power homes. Australian households can use EV batteries as backup power sources alongside solar energy, reducing electricity costs and enhancing energy security. This approach could be a model for Thailand in the future.
Thailand’s First Steps with V2G
V2G technology presents an intriguing option for clean energy management, and Thailand is taking initial steps toward adopting this technology. The Electricity Generating Authority of Thailand (EGAT) has initiated a significant project to test and study V2G’s potential for using EVs as backup power sources to enhance the stability of Thailand’s electrical grid.
The project began two years ago, with initial tests conducted using Nissan LEAF vehicles capable of bi-directional charging to examine the feasibility of utilizing EV batteries for household energy needs. Innopower Co., Ltd., an EGAT subsidiary, plays a key role in developing software and testing systems that control the flow of electricity from EVs back to the grid. If successful, this system could be scaled up to connect with larger electrical grids, utilizing EVs as backup batteries for neighborhoods, communities, or even nationwide use in the future.
Innopower also supplies Quasar chargers from Wallbox, a global leader in smart energy management and EV charging solutions. This bi-directional charger is being tested in this project.
The Future of V2G in Thailand
Adopting V2G technology in Thailand will be instrumental in creating a sustainable and stable energy system. By distributing energy demand across individual users, the electrical grid can become more flexible and resilient. This reduces the need for rapid increases in power plant output, lowering energy costs and machinery wear and tear. It also supports greater renewable energy usage, as EV energy can compensate for periods when renewable sources like wind or solar are unable to produce continuously. Over time, widespread adoption of V2G could decrease reliance on backup power plants, making the country’s energy infrastructure more sustainable and environmentally friendly.
Thailand is advancing towards a future of innovative energy use, keeping pace with global trends. V2G technology, already in use worldwide, will become an integral part of Thailand’s national energy system with proper support and development, bolstering the country’s energy security in the coming years.
Full Article: https://www.energynewscenter.com/v2g-เทคโนโลยีเปลี่ยนโลกพล/
