In-depth Analysis of Jiangsu Phase II Grid-side Energy Storage Power Station (Grid-side Application Scenario Case)
——The commercial secrets and technological breakthroughs of China's largest grid-side energy storage cluster
1. Project Background: "Stabilizer" of the Yangtze River Delta Power System
Load pressure: Jiangsu's maximum electricity load exceeds 130 million kilowatts (surpassing Germany's national total)
New Energy Challenge: Wind and solar power account for 28%, with daily power fluctuations exceeding 40%
Policy Driven: Jiangsu Province mandates in 2023 that new energy projects must have energy storage at 15%×2h.
2. Project Overview: The Speed of China in Numbers
Parameter | Phase One (2021) | Phase II (2023) | Rise amplitude |
Total scale | 1.02GWh | 2.91GWh | +185% |
Single station maximum capacity | 50MWh | 200MWh | +300% |
Response Speed | 200 milliseconds | 90 milliseconds | Speed up by 55% |
Participating site | 8 seats | 23 seats | Covering 13 cities |
3. Technical Solution: The "Jiangsu Standard" for Grid Energy Storage
🔹Core Configuration
Battery: CATL 280Ah dedicated power cell (cycle life 12,000 times)
PCS: Sungrow 3.45MW Modular Inverter (Efficiency > 98.5%)
EMS: NARI Jibao Intelligent Dispatching System (Access to the Provincial Virtual Power Plant Platform)
🔹Innovation Highlights
Topology optimization: DC side voltage increased to 1500V (loss reduction of 15%)
Firefighting Revolution: Pack-level Perfluorohexanone Fire Extinguishing + AI Thermal Runaway Early Warning
Module retirement: Battery cascade utilization embedded interface (connecting to provincial 5G base stations)
4. Business Model: Diverse Revenue Streams to Solve Economic Challenges
Typical site economic account (taking Nanjing Jiangbei Station as an example)
Index | Value |
Investment amount | ¥320 million |
Annual Income | ¥62 million |
Among them, the frequency modulation revenue | ¥2.35 million/month (63%) |
Payback Period | 5.8 years |
5. Operational Breakthrough: Paradigm Revolution of Power Grid Enterprises
🔹Comparison with traditional thermal power frequency modulation
Dimension | Coal-fired unit | Energy Storage Station |
Response Speed | minute-level | millisecond level |
Adjustment accuracy | ±2% | ±0.5% |
Carbon emissions | 2.8kgCO₂/kWh | 0 |
Marginal Cost | ¥0.15/kWh | ¥0.03/kWh |
🔹Grid Synergy
Reduce the risk of power restrictions in Suzhou Industrial Park by 72%
Assist in increasing the offshore wind power consumption rate in Rudong to 97%
6. Policy Innovation: Jiangsu's Unique Mechanism
🔹Key Support Policies
Two-part electricity price: Capacity price ¥220/kW·year + Energy price ¥0.3/kWh
Auxiliary service market: Frequency modulation compensation up to ¥12/MW·time
Network fee reduction: Energy storage discharge is exempt from transmission and distribution charges
7. Industry Impact: Defining New Standards for Grid Energy Storage
🔹Three major demonstration effects
Scale effect: The energy storage scale in a single province exceeds the global total in 2020.
Technical output: Huawei/Ningde Times solution exported to Europe and America after verification in Jiangsu
Financial Innovation: The first national energy storage infrastructure REITs (Huatai Jiangsu Energy Storage REIT)
🔹Pitfall Guide
Site Selection Traps: Avoid within 5km of Chemical Parks (New Safety Regulations)
Misjudgment of income: Actual frequency modulation income is about 60-80% of the theoretical value.
8. Battery Health Heatmap
9. Future Evolution: 2025 Planning Outlook
🔹Phase III Project Blueprint
Expand to 5GWh, achieving 100% second-level response for new energy across the province.
Pilot sodium-ion battery energy storage (cost reduced by 30%)
Access to the Yangtze River Delta Integrated Electricity Market
💡
Summary
"When Germany was still debating whether to build the first GW-level energy storage, Jiangsu had quietly built the world's largest grid-side 'energy storage fleet' — this is China's answer to the new power system."
Need the "Jiangsu Energy Storage Policy Compilation" or "Frequency Regulation Revenue Calculation Model"? Please feel free to contact us!