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What are the requirements for ESS in Tianjin Province?

In Tianjin Province, PV system with more than 50 MW of power output shall be integrated with ESS with 10% of the capacity and at least one hour of consecutive storage duration, according to the “Notice of Issues Regarding 2021-2022 Wind and PV Project Development and 2021 Grid Dispatch Guarantees.”

Why did China increase ESS capacity in 2021?

In 2021, China saw over 2.3 GW of installed electrochemical ESS capacity, a 50% YoY increase. Among which, 40% was from the generation side, 35% from the grid side, and 25% the end user side. Supportive policy framework is the major driver behind such increases. Many Chinese provinces have set energy storage targets since 2021.

What percentage of ESS is integrated with renewables?

For the generation side, authorities regulate the percentage of ESS integrated with renewables. Presently, most provinces require renewables to have 10-20% of capacity integrated with ESS that have two to four hours of storage duration.

How much energy storage will China have by 2025?

Many Chinese provinces have set energy storage targets since 2021. As shown in the graph below, some provinces will see nearly 100 GW of installed ESS capacity by 2025. More provincial governments introduced regulations for the generation side, the grid side, and the end user side.

How much subsidy does ESS receive in Northeast China?

In Northeast China, end-user ESS receive RMB 0.1-0.2/kWh of subsidy, on condition that they are subject to the supervision of provincial or higher power electricity dispatch institutions. The subsidized ESS must charge and discharge on demand and are not allowed to charge during peak hours or discharge during valley hours.