Belgian algorithm determines Japanese electricity prices

N-SIDE & JEPX jointly announce their collaboration to contribute to a more efficient and sustainable electricity market in Japan
Share Article


Louvain-la-Neuve, Tokyo, 15 June 2023 - N-SIDE, a Belgian scale-up providing software and services for leading energy players to solve complex issues through better decision making, and Japan Electric Power Exchange (JEPX), the only power exchange that facilitates the trading of electricity in Japan, jointly announce their collaboration. N-SIDE will provide JEPX with an algorithm to set the day-ahead electricity market prices and executed volumes in Japan.

The integration of N-SIDE’s Power Matching Algorithm into JEPX’s systems will contribute to a more efficient and sustainable electricity market in Japan. The algorithm will optimize supply and demand matching in a closed-gate auction fashion, ease the implementation of complex bid types, and accommodate a large number of market participants. Ultimately, it will support the sustainable growth of the electricity market and contribute to carbon neutrality in the land of the rising sun. 

Based on a mathematical optimization model, N-SIDE's Power Matching Algorithm is renowned for its accuracy and efficiency in setting day-ahead electricity market prices and executed volumes. It has been operating on the European electricity market for over 10 years and has been deployed on two of India's largest power exchanges for the past two years. Following the collaboration with Japan Electric Power Exchange, N-SIDE will now power three of the world’s largest open integrated electricity markets.

Philippe Chevalier, CEO at N-SIDE, expresses his enthusiasm for the unprecedented collaboration, stating, "We are delighted to partner with Japan Electric Power Exchange and to bring our power matching algorithm to the Japanese electricity market. We believe that our collaboration will drive positive change and help shape the future of the Japanese electricity sector. Moreover, this partnership marks our entry into the Japanese market, with a new office in Tokyo, and demonstrates our commitment to pursue our international expansion".   


"N-SIDE's industry expertise and cutting-edge power matching algorithm provide us with the assets to nurture our vision to foster a dynamic and efficient electricity market in Japan. By seamlessly integrating their powerful algorithm into our platform, we aim to empower market participants with the exchange system that contribute  to improve market fluidity and achieve a more sustainable energy landscape", comments Anzaki Satoshi, IT System Engineer at JEPX.

The partnership between N-SIDE and JEPX represents a significant step forward in the optimization of Japan's day-ahead electricity market. It combines N-SIDE's innovative solutions with JEPX's extensive market knowledge and expertise, creating a formidable force that will reshape the electricity trading system in Japan to help the energy field to speed up the integration of renewable energy sources.

Contract signature_PCH & SMA with JEPX representatives

N-SIDE and JEPX representatives at the Embassy of Belgium in Japan 

From left to right: Phillipe Chevalier - CEO at N-SIDE, Mr. Koji Tamura - General Manager at JEPX, Sophie Marquet - VP Energy at N-SIDE, Mr. Satoshi Anzaki, IT system engineer at N-SIDE 

About N-SIDE 

N-SIDE is a Belgian scale-up that empowers participants in the electricity exchange market  to make better decisions and optimize the use of critical resources. We’re doing so by combining deep industry expertise with applied mathematics and artificial intelligence into easy to use and cutting-edge software that transforms uncertainty and complexity into deterministic outcomes. 

In Energy, we accelerate the transition towards renewable energy sources and electrification by enabling leading electricity distribution companies and market players in making better, faster, and safer decisions with machine learning and mathematical optimization technologies. N-SIDE is headquartered in Belgium with offices in the USA and now soon in Japan, serving customers from across the world.

About JEPX

JEPX is the only power exchange in Japan that started trading electricity in 2005 after the deregulation of the Japanese electric power market. We operate day-ahead, intraday, Non-fossil value trading market among others. For the day-ahead market, 30% of the needed electricity circulates in the country through JEPX. We also monitor daily transactions, update the system according to regulatory reforms, and we aim to circulate energy efficiently.

About the Author

Corporate Communications Manager

Justin Gellezak