Keep Trading Running After JEPX New System Migration
With JEPX's new trading system, the trading screens you've been using will no longer be available. Mochi JEPX Exchange provides GUI and system infrastructure to continue trading.
Changes Coming with New Trading System
Trading Screen Discontinued
Bidding and execution confirmation via screen will no longer be available
API-Based Migration
System-to-system connectivity becomes the foundation
Trading Disruption Risk
Without system integration, trading will be interrupted
Continue Trading Operations via GUI
We provide a GUI compatible with the new trading system, enabling continued bidding and execution confirmation by human operators.
View Demo →Continue Trading with Existing Systems
Convert legacy JEPX API to new JEPX API, maintaining your existing automated trading schemes.
View Demo →Supported Trading Functions
- 30-min / Block Trading
- Link & Loop
- Limit / Market Orders
- CSV Bulk Bidding
- Execution & Settlement Download
Intraday Market & Non-Fossil Value Trading
※ Coming Soon
Starting with Spot Market, Intraday Market and Non-Fossil Value Trading will follow.
New System & Delivery Schedule
| Market | JEPX New System |
|---|---|
| Spot | April 2026 Launch |
| Intraday | October 2026 Launch |
- ・Spot: March 25, 2026 10:00 New system launch (delivery from 4/1)
- ・Intraday: September 30, 2026 13:00 New system launch (delivery from 10/1)
- ・Current screens scheduled to end March 2027
Mochi JEPX Exchange is scheduled to launch aligned with these dates.
Cost Considerations
With Mochi JEPX Exchange, no dedicated line required.
Connect to the new JEPX system without contracting or paying for a dedicated line.
If connecting to new JEPX on your own
JEPX Dedicated Line
※ Based on JEPX published materials
Mochi JEPX Exchange
- Connect to the new JEPX system without a dedicated line
- Economical pricing that includes dedicated line costs
- No need to prepare your own GUI or trading system
Contact us for detailed pricing
What We're Building Toward
Trading Automation
OCCTO Plan Submission Automation
Power Procurement Optimization
Battery Control & Scheduling
Evolving toward infrastructure supporting FIP, battery storage, self-wheeling, and other business schemes.
Frequently Asked Questions
Q. Why can't trading be done via a screen in JEPX's new trading system?
In JEPX's new trading system, trading shifts from screen-based operations to an API-based system-to-system connection. As a result, the traditional GUI used for placing bids and confirming executions is no longer provided. To continue trading after the migration, an API-compatible solution is required.
Q. Is a JEPX dedicated line really unnecessary when using Mochi JEPX Exchange?
Yes. When using Mochi JEPX Exchange, you do not need to individually contract or install a JEPX dedicated line. Mochi JEPX Exchange provides the connection infrastructure to the new JEPX system, allowing you to connect without bearing the dedicated line costs.
Q. Can existing automated trading systems using the old JEPX API be continued?
Yes. Mochi JEPX Exchange provides a mechanism to convert the old JEPX API into the new JEPX API, enabling existing automated trading systems and workflows to continue operating after the migration.
Q. When will markets other than the spot market be supported?
Support for the spot market will be provided first. Support for the intraday market and non-fossil value trading will be added gradually in line with JEPX's new system schedule. Details will be provided as the rollout progresses.