Integrated PV-Storage Solutions for Retail and Supermarkets
Typical Load Profile
Retail stores (large warehouse clubs / medium chain markets) are typical high-energy commercial complexes with the following consumption characteristics:
Fresh & Cold Chain — "Firm Base Load"
Cold-chain systems must run 24/7 uninterrupted, accounting for 45% – 50% of total energy use.
HVAC System — "Extreme Peak"
Warehouse clubs feature open layouts with ceilings above 8 m. Summer crowds drive explosive HVAC loads, accounting for 30% – 35% of total energy use.
Daytime Load — "PV+ESS Synergy"
Business hours overlap heavily with PV generation, enabling very high self-consumption.
3 Pain Points
Under China’s current electricity market (time-of-use tariffs and two-part tariffs) and the summer peak-load grid environment, mid-to-large supermarkets face severe operational cost and compliance pressures:
Daytime Tariffs Eroding Margins
1
Supermarket operating hours overlap with grid peak hours (summer peaks at CNY 1.2–1.5/kWh), concentrating rigid cooling and lighting loads.
Demand Penalties under Two-Part Tarif
2
Industrial / commercial HV users operate under two-part tariffs. If summer air-conditioning and cold-chain peak load exceeds the declared demand, the excess is billed at 2× the basic electricity charge.
Extreme-Weather Curtailment & Spoilage
3
Fresh cold chain is highly sensitive to power continuity. A single multi-hour outage in summer can cause hundreds of thousands of CNY in direct losses from spoiled inventory.
PV+ESS Configuration & Product Solution
To meet the high energy demand, limited roof area and high safety requirements of supermarkets, this solution leverages JinkoSolar’s high-efficiency PV modules together with C&I liquid-cooling energy storage systems in a fully integrated, standardized configuration.
Large-Format Warehouse Club Model
(Costco / Sam’s Club benchmark)
Medium Chain Store Model
(RT-Mart / Yonghui benchmark)
Floor Area~ 5,000 ㎡
Usable unshaded roof space: ~4,000 ㎡; Annual electricity usage: ~ 300 MWh.
880kW
Annual generation: 970MWh, offset the base load during daytime.
522kWh
2 liquid-cooled cabinets (125kW/261kWh), mainly used for peak shaving of key electricity loads & basic power backup
Floor Area~ 20,000 ㎡
Usable unshaded roof space: ~15,000 ㎡; Annual electricity usage: ~10 GWh.
3.3MW
Annual generation: ~3.45GWh, covers 34.5% of total power demand, 100% self-consumption.
2.088MWh
8 liquid cooling cabinets (125kW/261kWh) alternatively 4 cabinets (125kW/522kWh)
Core Product Advantages
Tiger Neo 3.0 — Seven Core Advantages
Ultra-high power
Front power output reaches 670 W with a conversion efficiency of 24.8%. Boasting power and efficiency far above industry benchmarks, these modules generate more electricity per square meter of rooftop area, making them ideal for supermarkets with limited roof space.
Ultra-high bifaciality
Bifaciality of 85%±5%, exceeding the national standard requirement of 75%. The modules efficiently capture ground-reflected light and ambient scattered light to greatly boost overall power generation.
Excellent temperature coefficient (-0.26%/°C)
Maintains stable power generation performance under high-temperature conditions. Supermarket rooftops get extremely hot in summer, and Tiger Neo 3.0 suffers less power degradation at high temperatures to guarantee steady power output.
Ultra-low annual degradation (only -0.35%)
The first-year degradation rate is 1%, followed by an annual degradation rate of merely 0.35%, securing power generation revenue throughout its 30-year service life.
Strong low-irradiance performance
The modules perform excellently under low irradiance conditions such as cloudy days, dawn and dusk, delivering a power generation gain of over 4%.
Jinko ESS SunGiga G2 Series
Uncompromising Safety
Superior Efficiency & Maximized ROI
Intelligent O&M
Charge / Discharge Logic
Investment Return Estimation
Economic analysis based on typical domestic industrial & commercial electricity tariffs
Scenario 1
Financial Model for Large Warehouse Supermarket
(3.3MW PV + 2.088MWh ESS)
Scenario 2
Financial Model for Medium Chain Supermarket
(880kW PV + 522kWh ESS)
Investment Return Estimation
Economic analysis based on typical domestic industrial & commercial electricity tariffs
Investment Estimation
Total CAPEX
14.60 million RMB
PV+ESS
4.039 million RMB
Inverter, Step-up Transformer, and Grid-connection Electrical Cabinet
3.500 million RMB
BOS Auxiliary Materials (Supports/Brackets, Cables, Cable Trays, and Fire Protection Facilities)
2.80 million RMB
EPC Construction
4.261 million RMB
Revenue Estimation
Total Annualized Project Revenue
(Pre-OPEX)
3.326 million RMB/year
PV Energy Saving Revenue (Daytime Base Electricity Cost Savings)
2.588 million RMB/year
Energy Storage Arbitrage Revenue (Peak-Valley Arbitrage)
0.588 million RMB/year
Demand Control Penalty Avoidance & Grid Response Subsidies
0.15 million RMB/year
Return on Investment
Static ROI
~4.4 years
Note: The above data are for illustrative purposes only. Actual economic returns are subject to a detailed assessment based on the local electricity pricing policies, load profiles, and equipment selection specific to the project site.
Case
Robinson Lifestyle Ban Chang, Thailand’s National Chain Mall
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