Abstract: Disputes over acceleration costs frequently arise due to the difficulties in liability determination and crude calculation methods inherent in traditional approaches. This paper proposes a norm regression method, establishing the principle of "front-loading liability determination." By applying Critical Path Method (CPM), it accurately identifies schedule compression caused by the employer’s responsibilities. Grounded in hydropower engineering quotas, a dynamic model incorporating a labor efficiency coefficient (α) and an equipment fatigue coefficient (γ) is constructed to address the disconnect between static quota consumption standards and actual site conditions. Validated at the diversion tunnel section of the Wudongde Hydropower Station, this method utilizes regression analysis on baseline contract pricing to eliminate "free-rider" claims. Compared to the modified total cost method, it achieved a 6.9% reduction in calculated compensation, forming a standardized closed-loop management process. This approach offers a scalable solution for similar projects.