Job Title: Expert in the calculation of electricity tariff distribution keysLanguage: French or/and Dutch, EnglishLocation: Brussels, BelgiumDuration: 22/06/2026 - 19/02/2027Job DescriptionWithin the Corporate Finance division, the Controlling department is an essential partner of the company and its entities in achieving its strategic objectives. Its main task is to allocate the company's resources optimally and to ensure that they are used in a way that achieves the set objectives, while respecting the accounting and regulatory frameworkThis mission is part of the preparation of the 2028-2031 Tariff Proposal. The pricing structure will be definitively defined in the Pricing Methodology in mid-2026. Taking this framework into account, Client must propose to the regulator several tariffs for the services to be provided to its customers. The calculation of tariffs (in MW, MWh, MVAR, etc.) is a complex and very specific process. The system operator must, among other things, review and formalise its cost and product allocation keys in order to ensure that they are allocated correctly, justifiably and in accordance with regulatory requirementsThe mission consists of analysing the existing elements, defining or adjusting the distribution keys, and documenting the methodological choices with a view to exchanges with the regulator (CREG) and internal control processesThe objective is to define, justify and document robust, consistent and defensible cost allocation keys for the new tariff period, ensuring their regulatory compliance and their adequacy with the operational and financial organization.Service RequirementsCost and revenue analysis and structuringAnalyze the structure of costs and revenues (OPEX, CAPEX, direct/indirect costs, common costs)Identify the cost centers, activities and scopes concerned by the pricing exerciseUnderstand the linkages between costs and revenues, operational activities and tariff beneficiariesDefining Allocation KeyPropose relevant distribution keys (technical, economic or operational drivers)Test and compare different key options (impact, stability, traceability)Verify the consistency of the keys with regulatory principles (causality, non-discrimination, transparency, etc.)Coordination and internal exchangeWork closely with the Controlling, Accounting, Customers, Regulatory Affairs and several technical operational departmentsCollect and validate the necessary data (volumes, asset lifetime, assumptions)Ensure alignment between methodological choices and operational realityDocumentation and Regulatory RationaleDocument in a structured manner the allocation keys used and the underlying assumptionsPrepare clear materials for internal reviews, audit, and regulatorExpected deliverableDefinition and detailed description of the distribution keys by type of costsAnalysis of the impact of keys on tariff perimetersMethodological note formalizing the choices and justificationsPresentation materials for internal committees and regulatory exchangeProfileeTechnical skillSolid understanding of cost accounting and cost allocationExperience in a regulated environment and/or tariffsAbility to understand and integrate regulatory constraintsFluency with numerical data and distribution modelsTransversal skillAbility to analyze and synthesizeMethodological rigor and attention to detailAbility to challenge and explain technical choices to non-financial interlocutorsAutonomy, proactivity, involvement and results-orienteGood written communication (documentation, methodological notes)A good command of Dutch and/or French as well as English is required