In order to find an effective way to solve the problem of renewable energy abandonment and achieve carbon neutralization, a hybrid system of wind power, photovoltaic-hydrogen energy storage is constructed. Under the goal of carbon neutralization, a cost-benefit model based on the goal of carbon neutralization is proposed to study the economy of hydrogen energy storage from six perspectives: life cycle cost / benefit, annual average cost / benefit and standardized energy cost / benefit. The results show that the annual average benefit and standardized energy benefit of wind power and photovoltaic hydrogen energy storage system are good, and the feasibility of system construction is good, which provides a feasible scheme for the subsequent industrial production energy structure adjustment.