Abstract:

The development of distributed energy storage in the context of the international market would be impossible without policy support and market rules. Since 2011, more than 10 countries and regions have released distributed energy storage subsidy policies; majority of these policies have focused on encouraging the consumption of distributed solar-plus-storage systems for self-generation and use or supporting independent residential storage systems. These subsidies are primarily provided for the first-time installation of a system, helping to alleviate some financial burdens associated with the purchase, lease, and installation of energy storage systems. Subsidies are most often dispersed at a rate of 30%-60% of the initial cost of a single individual system. With stimulus policies encouraging the rapid development of distributed energy storage, some countries have initiated energy system reforms, which simplify the process for the participation of distributed energy storage in the power market, reduce the capacity size limits for market participation, and allow distributed energy storage to participate in new markets. Such reforms have helped to harness the value of energy storage in contributing to grid stability, safety, and the increased use of renewables in the network while increasing the revenue of the project owners.

Key words: energy storage, self-generation incentive program, distributed energy storage subsidy, distributed energy storage aggregation, market rules