20kW Permanent Magnet Generator Grid-Connected Hydropower Project Case

2026-04-24

Fergana Valley Irrigation Canal Grid-Tied Full Sales Project, Uzbekistan

Project Summary

A long-idle water energy resource at an irrigation canal in the Fergana Valley, Uzbekistan. Greef Energy deployed a 20kW low-speed permanent magnet generator + GREEF grid-connected controller + 20kW inverter pure grid-tied hydropower system. After six months of operation, average daily generation is approximately 380 kWh, with full feed-in to the grid. Expected annual revenue is about 82,000 CNY, with a simple payback period of only 0.67 years. The system requires no batteries and no on-site staff, truly achieving "using water to support farming, selling electricity to increase income".

1. Project Background and Opportunity

Project type	20kW hydropower grid-tied
Location	Eastern Uzbekistan, Fergana Valley
Hydrological conditions	Main irrigation canal, effective head 11.5 meters, perennial flow rate 0.3 – 0.5 m³/s
Core pain point	Continuous water flow, wasted energy; rising farm electricity costs year by year
Policy incentives	Small hydropower feed-in tariff 0.32 USD/kWh (approx. 2.3 CNY/kWh), guaranteed revenue
Customer request	Utilize canal resources, full sales to obtain long-term stable income

2. System Configuration

Core Equipment	Model/Specification	Key Advantages
Water turbine	Customer self-made
Generator	20kW low-speed permanent magnet synchronous generator	500 rpm ultra-low speed, direct drive (no gearbox), maintenance-free
Controller	GREEF smart grid-connected controller	Auto-synchronization, MPPT tracking, anti-islanding protection, remote monitoring
Inverter	20kW three-phase grid-tied inverter	Compliant with IEC 62116, THD < 4%

System Structure Diagram

Core Operational Data (first 6 months)

Key Metric	Actual Data
Cumulative generation	69,500 kWh
Average daily generation	approx. 380 kWh
Average monthly revenue	approx. 6,800 CNY
Estimated annual revenue	approx. 82,000 CNY
Total system investment	55,000 CNY (equipment, civil works, grid connection)
Simple payback period	approx. 0.67 years

4. Customer Testimonial

"This canal flows day and night – I never thought it could make money. After Greef installed the system, it runs by itself. Every day I check my phone to see how much electricity was generated and how much I earned. I'll recover my investment in less than a year, and after that it's pure profit."

— Bakhtiyar Yusupov, Project Investor

5. Related Recommendations

Further reading: 30kW Panama mountain area hybrid grid-tied/off-grid hydropower case (self-consumption + surplus feed-in)
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