Existing hybrid energy systems using solar and hydrogen often face challenges such as low energy utilization efficiency andmismatches between energy supply and demand. To address these issues,a distributed integrated energy architecture for full-spectrumsolar and hydrogen utilization is proposed. Considering the optimal output of solar energy,a spectral splitting window of 700–1100 nm isestablished. Targeting an industrial park in Nanjing,Jiangsu Province,as the energy supply object,the study analyzed the park’s hourlydemand for electricity,cooling,heating,and domestic hot water over the course of a year. A system was designed,and a full-conditiondynamic digital model was developed in Matlab. Simulation results showed that, compared to a reference system, the new systemimproved annual energy utilization efficiency by 10.43% and reduced greenhouse gas emissions by 655660 kg,demonstrating its superiorenergy efficiency and environmental friendliness. The effects of solar concentrator area and thermal storage capacity on systemperformance were explored individually. After balancing system performance and economic costs, capacity optimization for the newsystem was performed,identifying an optimal configuration with a solar concentrator area of 6000 m² and a thermal storage capacity Nstoreof 0.9. Post- optimization, the system’s energy efficiency reached 29.03%, an increase of 3.56% from the initial configuration. Thisdistributed integrated energy system,which synergistically utilizes full-spectrum solar and hydrogen energy,not only enhances energy utilization efficiency but also significantly reduces greenhouse gas emissions, offering a novel approach to achieving sustainabledevelopment goals.