<p>Valve-controlled hydraulic systems are the most common power-transmission solutions for construction machinery. However, because the centralized hydraulic pump matches the highest load pressure during multi-actuator operation, the light-load actuator must compensate for the load differences by throttling, which significantly reduces energy efficiency. In this study, we propose a load-difference equilibrium system using electrohydraulic energy storage. A hydraulic pump/motor and electric motor/generator module are used to boost the outlet-chamber pressure of the light-load actuator so that the inlet chamber pressures of each actuator can be maintained at the same level. Therefore, the proposed scheme can minimize throttling losses due to load differences and convert excess energy from light-load actuator circuits into electrical energy for storage and reutilization. The proposed scheme can also capture regenerative energy from overrunning loads. A low-pressure loss-control strategy was implemented for real-time control. Several tests were conducted to evaluate the working performance of the proposed and valve-controlled systems under different working conditions. The results show that, compared with the traditional valve-controlled system, the energy consumption and throttling losses of the proposed system can be reduced by 21.5%−37.3% and 79.4%−85.8%, respectively. Moreover, the overall energy-recovery efficiency was approximately 55.8%−64.0%. This study proposes a feasible energy-saving scheme for all types of valve-controlled construction machinery.</p>