Asset-Specific Renewable Forecasts That Strengthen Operations and Trading Performance.

Portfolio Power Forecasts give energy companies a sharper, site-specific view of how their wind, solar, and hydro assets will perform, enabling more accurate planning, tighter risk control, and better commercial results. Instead of relying on generic model output, you get forecasts calibrated to your actual assets, continuously refined with live operational data.

Cloud SaaS Data Management Platform.

Turn complex data into clarity

OpenDataDSL is a cloud-native, ultra-scalable platform designed to transform how businesses manage, model, and interact with market data. By combining transparency, extensibility, and advanced automation, it empowers teams to go beyond the limits of legacy systems.

Why OpenDataDSL?

ODSL Programming Language – A unique domain-specific language that lets “business coders” easily query, transform, and automate workflows with market data.

Operational Transparency – Built-in dashboards, dataset monitoring, and curve management provide unmatched visibility and control across the entire data pipeline.

Extensible by Design – Both the web application and ODSL are designed for partners and clients to create pluggable extensions, ensuring the platform grows with your business.

Cloud-Native & Scalable – Zero-deployment, SaaS-first architecture that adapts seamlessly to your workloads—delivering performance without hidden costs.

Smarter Curves – Advanced curve building tools that use business rules and AI-driven logic to create accurate forward curves, faster.

The Open in OpenDataDSL

Open is more than just a name—it’s a philosophy. We believe in transparency, honesty, and giving customers the ability to build their own insights, KPIs, and workflows without being locked into rigid, opaque platforms.

Shaping the Future of Market Data

With over two decades of expertise in market data systems, OpenDataDSL is built for energy, commodities, and beyond—helping companies unlock real-time analytics, embrace AI, and gain a competitive edge in a rapidly evolving landscape.

Energy One provides 24/7 or Out-of-Hours gas and power operations and dispatching services.

Our team of 40+ experienced gas and power operators works out of three control rooms based in Paris (France), Aalst (Belgium) and Adelaide (Australia) using a follow-the-sun approach. This means that we ensure you always have operators working in daytime hours to manage nominations, bidding, scheduling and portfolio balancing on your behalf. Several of our experts have moved from our European offices to Australia, where they are taking care of the European night shift, ensuring you always have a fresh pair of eyes watching over your portfolio.

Comprehensive 24/7 outsourced gas and power operations and dispatching services.

Outsourcing your nominations and dispatching functions to GMSL allows you to concentrate on commercial activities to maximise value from your portfolio. We have unrivalled experience of operations in gas and power markets across Europe.

In case of new requirements or changes to existing markets we have a Business Analysis Team plus a Training & Improvement Team, dedicated to building our experience and spreading best practice throughout GMSL.

Our shift team numbers over 50 staff, providing flexibility for peaks in workload, together with holidays and illness.

GMSL's cloud SaaS solution for gas scheduling.

Chorus is GMSL's SaaS solution which takes the complexity out of gas nominations. With ever expanding market coverage, Chorus allows gas shippers to simplify their IT infrastructure, reduce in-house support and software costs and access new markets faster.

SaaS Portfolio Management solution for European gas shippers.

EuroRunner is a comprehensive gas portfolio management system, allowing you to balance your positions across the European gas networks. Easily coping with complex portfolios and capable of managing a wide range of nominations requirements.

EuroRunner is compatible with over 25 market areas and TSOs, breaking down complexity, managing flexibility and fully adaptable to changing markets and portfolios.

Gateway to the Energy Markets.

Our B2B Communications service, MessageRouter, enables you to communicate quickly, easily and securely with your energy market partners. With a single API connection to GMSL you can exchange messages with 200+ market parties, with the system managing the specific communication requirements of each party, supporting AS2, AS4, SFTP, web services, secure email and the Energy Communication Platform (ECP).

MessageRouter is a low cost, high-availability cloud SaaS solution, already proven and transmitting over 20 million messages each year.