We explored the methods to incorporate bottom-up abatement cost estimates into top-down models. Abatement possibilities are usually taken into account implicitly in such models. The approach is different than in bottom-up models, because the characteristics of the technologies and how they are specified are essential here. The integration of abatement technologies with top-down modeling makes it possible to better assess the economic costs of environmental policies and avoid an overestimation of the marginal abatement cost.