In Lishui Economic Development Zone, Datang Nanjing Thermal Power Co., Ltd. plant, rows of white energy storage prefabricated pods are neatly arranged -This is exactly the 50 MW/100 MWh centralized shared energy storage plant that recently achieved two phases of grid-connected operation.
From the first phase of exploration to the second phase of upgrading, this "super charging treasure" is a smarter, more economical, more efficient way, for the stable operation of the power grid to inject strong kinetic energy.
Denser cells, better cost
The second phase of the project is "better than blue."
Walking into the Phase II energy storage site, the energy storage area covering only 6.79 acres has 10 energy storage units, 20 battery pre-fabrication chambers and 10 PCS booster chambers, with a total installed capacity of 50 MW/100 MWh.
"Compared to Phase I, Phase II can be described as small but strong." Xu Dong, secretary of the company's party committee and chairman of the board of directors, introduced, "Phase II adopts electric cores with greater energy density, more compact layout, and saves nearly half of the land with the same capacity."
Another point of pride for the project team is the lower cost of Phase II. "We happened to seize the window of increased competition in the energy storage system market, and the purchase price of the equipment was reduced by about 30 million yuan compared to Phase I." Xu Dong said with a smile, "We also optimized the design by changing the traditional concrete foundation to a pile foundation, which not only shortened the construction period, but also saved about 300,000 yuan in construction costs."
Between one increase and one decrease, the economy and advancement of Phase II is immediately apparent. "In order to better adapt to the changing and complex grid operation mode and accept grid dispatch more stably, we also carried out station-wide modeling of the energy storage power station, with a higher safety factor and a denser protection system, as well as a more complete monitoring coverage and a more precise response." The O&M staff on site added, "Phase II is like an upgraded version of Phase I, with clearer operational data and faster response to dispatch commands."
How does an energy storage plant work?
Fast charging and discharging, peaks and valleys
If the grid is compared to a huge transportation network, then the new energy generation is like a fluctuating traffic - photovoltaic power peaks in the afternoon, wind power is significantly enhanced at night, while the demand for electricity tends to be concentrated in the daytime and evening. This power generation and use of electricity between the "timing mismatch", easy to lead to the grid similar to the traffic "congestion" or "empty" phenomenon.
The energy storage plant is like a regulating reservoir next to this "energy highway". "When electricity consumption is low, we put the excess electricity into the battery; to the peak of electricity consumption, and then quickly released." On-site dispatchers gave more intuitive data:This energy storage plant can store 100,000 kWh of electricity at a time, enough to power tens of thousands of homes for a day.
The first phase of the project was commissioned in July 2024, and the second phase was also connected to the grid earlier this year. With the synergistic power of the two phases, it can absorb or release electricity quickly on a large scale, effectively relieve the peak pressure of Lishui region and even Nanjing power grid, and guarantee the reliable electricity consumption of enterprises and residents.
First-quarter numbers shine
Profit exceeds target by 14.5%
The success of the energy storage project is just a microcosm of Datang Nanjing Thermal Power's "open door" in the first quarter.. In the first quarter, the company's heat sales target was fully achieved and the profit realized 114.5% of the target value.
In terms of the layout of emerging industries, the company has continued to focus on distributed photovoltaics since 2022.At present, more than twenty megawatts of rooftop photovoltaic projects have been built and put into operation in Lishui.At the same time, with the path of "ecology +", we actively promote the construction of centralized photovoltaic and Jingqiao pit integrated energy projects. Among them.The Jingqiao project integrates photovoltaic power generation and ecological restoration, and is expected to complete the first phase of production within the year.Helping to synergize clean power with local tourism.
Xu Dong said the company is also setting its sights on theGreen Power Direct Linkand other cutting-edge directions, laying out in advance for future growth poles.
From energy storage "twin star" to fishery-photovoltaic complementary
From pit management to direct green power connection
Datang Nanjing Cogeneration is taking practical work as a pen...
Running towards a greener future
