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How can photovoltaic + energy storage reduce costs and increase efficiency? Revealing profit models and application scenarios!
Created on 07.21
The advantages of "Photovoltaics + Energy Storage":
One of the application scenarios of "Photovoltaic + Energy Storage": Improve self-consumption rate
- The energy storage system stores excess photovoltaic electricity and releases it during peak load times, increasing the proportion of self-consumption.
- For example: Through energy storage, the self-consumption ratio can be increased from 50% to 70%.
- Recommended devices: Growatt SPH grid-tied and off-grid integrated machine, HPS solar storage integrated machine, PCS bidirectional energy storage inverter, etc., with functions such as flexible switching, peak shaving and valley filling, and off-grid emergency power supply.
Case 1: Jiangsu Industrial Park Photovoltaic Energy Storage Project
- Scale: 500kW photovoltaic + 200kWh energy storage
- Effect: Increase the self-consumption rate from 45% to 75% through the energy storage system, saving approximately 820,000 yuan in electricity costs annually.
- Key Equipment: Using Growatt SPH5000 and off-grid integrated machine, equipped with HPS120 solar storage integrated machine
Case 2: Microgrid Project in a Non-Electric Village in Tibet
- Scale: 300kW photovoltaic + 150kWh energy storage
- Effect: Achieve stable power supply for 24 hours, with power supply reliability reaching 99.5%
- Feature: Uses PCS bidirectional energy storage inverter to achieve seamless switching between off-grid and grid-connected.
“Photovoltaic + Energy Storage” Application Scenario Two: Peak Shaving and Valley Filling
- Charge during low electricity price periods and discharge during peak periods to reduce overall electricity costs.
- Adjust the power demand curve through the energy storage system to alleviate grid pressure.
Case 3: Energy Storage Project of a Commercial Complex in Zhejiang
- Scale: 1MW photovoltaic + 500kWh energy storage
- Effect: The annual profit from peak-valley arbitrage is approximately 1.3 million yuan, and the transformer capacity cost is reduced by 40%.
- Operating mode: Charging during off-peak hours (0:00-8:00), discharging during peak hours (10:00-12:00, 18:00-22:00)
Case 4: Demand Management Project of a Factory in Guangdong
- Scale: 800kW photovoltaic + 300kWh energy storage
- Effect: Maximum demand reduced from 1200kW to 850kW, annual savings on basic electricity costs approximately 960,000 yuan.
- Control Strategy: Real-time optimization of charging and discharging strategy based on EMS system
New application scenario three: Photovoltaic + Energy Storage Microgrid
Case 5: Hainan Certain Island Microgrid Demonstration Project
- Scale: 1MW photovoltaic + 600kWh energy storage + diesel generator backup
- Effect: Renewable energy penetration rate exceeds 85%, diesel consumption reduced by 70%
- System features: Using HPS light storage integrated machine to achieve multi-energy complementary control
Case 6: Shandong Certain Data Center Backup Power Supply Project
- Scale: 200kW photovoltaic + 100kWh energy storage
- Effect: Achieve 1 hour of emergency power supply, PUE value reduced by 0.2
- Technical Highlights: Support for seamless switching between online and offline, millisecond-level response speed
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