Buyer Strategy in a Nascent Clean-Commodity Market: Demand Activation, Supply Support, and Security Trade-Offs

Governments use regulation, procurement, and public finance to catalyze low-emissions commodity markets before demand and supply are deep or liquid. 

We develop a two-model framework to analyze an anchor buyer’s strategy in emerging markets. Model I focuses on three interventions: (i) activating clean demand, (ii) supporting capacity expansion by an incumbent supplier, and (iii) inducing new supplier entry. In an asymmetric Cournot setting, it shows how the buyer’s surplus, the value assigned to market growth, and a penalty on seller concentration vary with market structure. 

Demand deepening always expands trade but raises prices and weakly raises seller concentration, whereas supply expansion lowers prices and can reduce concentration, measured by the Herfindahl–Hirschman Index (HHI). We demonstrate that the resulting division of surplus creates asymmetric incentives to finance interventions, exposing the parties to ex-post opportunistic renegotiation once capital costs are sunk. 

To address hold-up, Model II introduces contractual protections into the buyer’s support mechanism. 

We formalize this protection as a share of the buyer’s rent that survives renegotiation, aggregating enforce-ability across volume, price, and access. This formulation interprets a voided hold-up loss as the buyer’s willingness to pay for contract enforce-ability. 

Using these insights, we propose a tolling arrangement that unbundles capacity remuneration from commodity ownership, mitigating hold-up through enforceable buyer control rights over supported assets. Numerical simulations, parameterized to a thin hydrogen-like market and a deep LNG-like market, illustrate why policies to expand trade are not structurally equivalent to accelerating the formation of a secure, contestable market.