Model Risk in European Union Allowance Futures and Options: From Black–76 to Institutionally Grounded Models—A Critical Structured Review

Main Article Content

Bohao Zhu

Keywords

EU emissions trading system, EUA futures and options, model risk, risk-neutral valuation, market stability reserve

Abstract

Pricing models for European Union Allowance (EUA) derivatives are often assessed as statistical specifications even though the EU Emissions Trading System changes the payoff boundary, supply process, and intertemporal value of the underlying compliance asset. This critical structured review examines how EUA futures and options models have developed from Black–76 conventions to institutionally grounded equilibrium, structural, and Market Stability Reserve (MSR) specifications; how regulatory mechanisms enter risk-neutral valuation; and what evidence supports model robustness. Fifty-three DOI- or publisher-verified academic records were coded using an Institution–Model–Measure–Evidence (IMME) lens: 47 inform the model-level synthesis and six provide contextual triangulation. The evidence is organized into early benchmarks and deficiencies, institutionally grounded models, and MSR-era pricing and validation. Black–76 remains a transparent quotation benchmark, but evidence from physical-measure dynamics and phase boundaries limits its structural interpretation. Structural and equilibrium models make institutional channels explicit, yet add identification and numerical risks. Comparative studies provide some held-out pricing evidence, but the literature still lacks transaction-cost-aware hedging and regime-transport tests. The resulting model-selection principle is conditional adequacy: use the least complex model that is regime-aligned, measure-explicit, empirically identified, and validated for the intended pricing or hedging task.

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  • [54] Appendix A. Corpus Classification and IMME Coding Protocol
  • [55] Corpus classification. The 53-record evidence matrix contains 47 records used in the model-level synthesis and six contextual records retained for triangulation. The latter comprise Chevallier's risk-premium analysis [48], Chevallier and Sévi's realized-volatility forecast [49], Bredin and Parsons' cost-of-carry and term-structure evidence [50], Hinz and Novikov's fair-pricing principles [51], Kollenberg and Taschini's cap-adjustment design [52], and Perino and Willner's analysis of delayed MSR reform [53]. They support pricing-measure, term-structure, or institutional interpretation but do not add an independent cross-model option-validation or hedging test; none was treated as a duplicate or quality exclusion.
  • [56] Coding protocol. Institution codes record regime boundaries and policy state; Model codes identify processes, state variables, payoffs, parameters, and numerical methods; Measure codes distinguish P, Q, transformations, and incomplete-market pricing principles; Evidence codes record data, filters, validation splits, losses, hedging costs, and regime tests. For example, Fang et al. [33] is coded as Phase III–IV open trading with inter-phase banking (Institution); LN, SKM, and MLN-2 futures-option specifications (Model); risk-neutral calibration to option prices (Measure); and weekly cross-sections with training/testing MSE, MAE, and MAPE but no dynamic-hedging or regime-transport test (Evidence).
  • [57] Illustrative evidence links. Risk-neutral modelling in [19] illustrates Level 1 coherence; option-price calibration in [33] illustrates a Level 2 component; and next-month pricing in [29] illustrates the chronological holdout component of Level 3. These links identify particular evidence requirements rather than formal ratings of whole studies; neither empirical example establishes the combined hedging and cross-regime validation required at Level 4.