First Guarantees of Origin auctions held by Powernext

20 September 2019

— Powernext successfully held the first auction of Guarantees of Origin (GO) for the French State on September, 18th. The auction platform uses a market clearing algorithm designed by Powernext and Artelys and implemented by Artelys for the selection of offers.

Guarantees of Origin (GOs) are green certificates that allow power retailers to certify the nature of the energy sold to their customers, in particular in their commercial offers for green electricity. In France GO’s lifecycle is tracked in a national registry.

The French Department of Energy (DGEC) has appointed Powernext for holding this national registry and for organizing monthly auctions to sell the Guarantees of Origin issued from French renewable power plants under feed-in-tariffs. The GO auctions will help the French State get a new added value from these devices while providing bidders with competitive and tailor-made products. The first auction was successfully held by Powernext on September the 18th.

The auction platform uses a market clearing algorithm designed by Powernext and Artelys and implemented by Artelys for the selection of offers. This algorithm allows GO buyers to differentiate their bids based on technologies, regions, or even specific devices. The market clearing algorithm selects the optimal offers with regards to the auction revenue and equity maximization.

Artelys Knitro is the optimization solver used in the market clearing algorithm and is able to solve the problem in less than a minute.

The press release is available here.

Swissgrid selects Artelys Crystal Super Grid

25 Sep 2025

Artelys is pleased to announce that Swissgrid, the Swiss electricity Transmission System Operator (TSO), has selected Artelys Crystal Super Grid, our multi-energy simulation solution, to support their strategic planning and system analysis activities.

Artelys led the Assessment of Policy Options for Securing Inertia for the European Commission

17 Sep 2025

The European Commission’s Directorate-General for Energy (DG ENER) selected Artelys (leader), Trinomics, and Tractebel ENGIE to study solutions for ensuring the future frequency stability of the European power system. The study report was published in August 2025 by...

Artelys Knitro 15.0: New Tools for Your Large-Scale Models

18 Jun 2025

Artelys is pleased to announce the release of Knitro 15.0, which provides new algorithms and performance improvements to solve your large-scale optimisation problems, whether linear or non-linear, more quickly.

Artelys Introduces Future Sight: a Visualisation Tool Supporting the Energy Transition

11 Jun 2025

As partner in the European Climate + Energy Modeling Forum (ECEMF) – a Horizon 2020 Europe project uniting research institutes and leading energy modellers in Europe – Artelys has contributed to modeling activities powered by Artelys Crystal Super Grid modelisation tool, and has led the development of a fully-fledged visualisation tool.  

see all news