In article is introduce a new mean-field game framework to analyze the impact of carbon pricing in a multi-sector economy with defaultable firms. Each sector produces a homogeneous good, with its price endogenously determined through market clearing. Firms act as price takers and maximize profits by choosing an optimal allocation of inputs—including labor, emissions, and intermediate goods from other sectors—while interacting through the endogenous sectoral price. Firms also choose their default timing to maximize shareholder value.
