• Dagong ESS

What is the Difference Between UPS and BESS?

What is UPS and BESS?

• UPS (Uninterruptible Power Supply) is a device that provides instant backup power when the main power source fails. It is primarily designed to prevent power interruptions for critical loads like servers, data centers, and medical equipment.

• BESS (Battery Energy Storage System) is a large-scale battery-based system designed to store electricity and release it when needed. Unlike UPS, BESS is used not only for backup power but also for energy management, peak shaving, load shifting, and renewable energy integration.

Types of UPS and BESS

• UPS Types:

Offline/Standby UPS

Line-Interactive UPS

Online Double-Conversion UPS

• BESS Types:

Residential BESS (5–20kWh)

Commercial & Industrial (C&I) BESS (50–500kWh)

Utility-Scale BESS (1MWh and above)

Air-Cooled and Liquid-Cooled BESS

Features of UPS and BESS

Feature	UPS	BESS
Backup Time	Short-term (minutes)	Medium to long-term (hours)
Response Time	Instant (milliseconds)	Fast, but not as instantaneous as UPS
Energy Management	Not supported	Supports EMS functions
Integration with Solar	Rarely supported	Often integrated with PV systems
Scalability	Limited	Highly scalable
Use Case Focus	Power continuity	Energy optimization & storage

Applications of UPS and BESS

• UPS Applications:

Data centers

Hospitals and medical labs

Banking systems

Emergency communication systems

• BESS Applications:

Solar and wind energy storage

Peak shaving and load shifting

Microgrids

Commercial and industrial power backup

EV charging stations

Price of UPS and BESS

The price of the UPS and BESS is based on EXW (Ex Works) terms and may vary depending on the supplier, quantity, and market conditions.You may need to request a quote from a reputable energy storage system supplier to get the most accurate pricing. Please note that the final costs may vary based on fluctuations in raw material prices and exchange rates.

How to Select UPS or BESS for Your Project?

• Define Your Application: Need backup for a few minutes (UPS) or energy storage for hours (BESS)?

• Calculate Load & Runtime: Total power (kW) and duration required.

• Check Compatibility: Is solar PV involved? Do you need EMS control?

• Consider Space and Cooling: BESS may need more space and cooling options.

• Evaluate Cost vs. Benefit: UPS is cheaper short-term; BESS offers long-term energy savings.

How Long Does UPS and BESS Last?

System	Typical Lifespan	Battery Replacement
UPS	5–10 years	Every 3–5 years
BESS	10–15 years	After 6,000–8,000 cycles

The Supplier of BESS | Dagong ESS

Dagong ESS(Dagong New Energy) focus on comprehensive solutions for new energy intelligent equipment.If you are looking for  BESS or want to know more about the technical information, Feel free to reach out to us by sending an inquiry to our corporate email at sales@dagongess.com, or simply visit the "Contact Us" page on our website to leave your message. We will respond to you promptly.