Thermal Power Is Too Slow In Frequency Regulation, Energy Storage Steps In: FGI Turns Old Power Plants into Fast-Regulation Champions
A Retrofit Sharing Event That Changes the Game
On May 28, 2026, the 2026 Annual Power Plant Excellent Retrofit Sharing and Equipment Upgrade Technology Conference took place in Tai'an, Shandong. The main topic: how power plants can keep up with the rapid development of new power systems through technical upgrades and equipment modernization.
FGI attended the event and delivered a practical keynote speech: The thermal power + FGI ESS
joint frequency regulation solution. In simple terms, FGI teaches thermal power plants how to Response faster by installing Energy storage system.
The Challenge: Thermal Power Units Can No Longer Keep Pace Of Frequency Regulation
With the rapid growth of wind and solar power, the grid faces increasing pressure to regulate frequency. Traditional thermal power units simply cannot react fast enough. Their response speed and ramp rate are too slow, and their regulation accuracy falls short. These mechanical limitations make it harder for thermal power to meet the demands of modern power systems.
FGI's Solution: Energy Storage Takes the Lead, Thermal Power Provides Backup.
With over 30 years of experience in power electronics, FGI introduces its proven solution: a joint frequency regulation model where energy storage responds quickly and thermal power offers stable support.
1.The ideal battery + capacitor combo
Lithium iron phosphate batteries provide energy, while supercapacitors deliver long life and can handle hundreds of thousands of charge cycles. Together, they manage frequent charge and discharge without damaging equipment. This combination extends total system life by more than 30% compared to conventional solutions.
2.FGI's proprietary control system enables millisecond-level coordination
The system receives AGC commands, assigns tasks, and outputs power—all in milliseconds. It automatically identifies command types and allocates work between lithium batteries and capacitors. The three components work together to achieve near-zero delay and zero deviation.
3.Safety features handle extreme conditions
The system includes multi-level protection against overvoltage, overcurrent, overheating, and short circuits. It also supports black starts and isolated grid operation, ensuring stability even in worst-case scenarios. In short: advanced but reliable.
Success Case: LUXI Power Plant Is Already Running Strong
This solution is no paper design. It has successfully operated at the LUXI Power Plant, a large thermal project, and now serves as a benchmark in Shandong Province.
Looking at the data:
AGC regulation performance improved by more than 35%.
Frequency regulation response time shortened from 10–30 seconds to within 200 milliseconds.
Regulation accuracy reached over 99%.
The benefits are tangible
After the retrofit, the power plant became more competitive in the electricity auxiliary service market.
At the same time, equipment wear was reduced, and energy consumption was lowered.
The project truly achieved: "flexibility retrofit + cost reduction and efficiency improvement + safe and reliable power supply."
The Future: FGI Keeps Moving Forward
Being invited to share results at an industry conference shows that FGI’s strength in thermal power flexibility retrofits is widely recognized.
Going forward, FGI will continue to upgrade its thermal + storage joint frequency regulation technology. It will expand energy storage solutions for the grid side, power source side, and user side.
Through technological innovation, FGI will help drive the green and low-carbon transformation of the power industry.
