ORIOM has been developed and used over the last decade by WavEC in R&D projects and consulting activities. ORIOM was published under the PolyForm Shield License 1.0.0 to improve transparency, peer review, and reproducibility of analyses.

“Installation and maintenance are major cost-drivers in offshore renewable energy projects. However, these critical operations seldom receive the attention they deserve early in the technology and project development phases, where minor design and strategy adjustments can have the most significant implications for the LCOE,” said Francisco Correia da Fonseca, Head of Engineering & Operations at WavEC.

“We are particularly proud to release ORIOM to the community. In a world where coding is now widely accessible, largely driven by the rise in LLMs (Large Language Models), the true value has moved away from ‘hiding the recipe’ in proprietary black-boxes, and toward ensuring the reproducibility and rigorous validation of the results. That’s what we’re doing with ORIOM.”

ORIOM is engineered to mirror the operational realities faced by offshore renewable energy developers and operators. By integrating long-term metocean hindcasts with technical and logistical constraints, as well as system reliability inputs, the tool simulates the complex interplay of marine spreads, port logistics, and (preventive and corrective) maintenance scheduling, allowing for estimating key project metrics such as energy losses and costs for project scenarios. The tool supports the definition, evaluation and optimization of tailored O&M strategies, helping teams understand O&M impacts, plan preventive maintenance, evaluate energy losses, identify criticalities, optimize asset needs, and assess operability at site, with results depending on key inputs such as O&M strategy, site location, technology choice, and project size.

ORIOM’s source code is available in ORIOM’s GitHub.