22
CORPORATE PROFILE & BUSINESS PORTFOLIO 2016 2017 FLOATING PV DESIGN & QUALITY CHALLENGES
CORPORATE PROFILE & BUSINESS PORTFOLIO
2016 2017
FLOATING PV DESIGN & QUALITY CHALLENGES
Benefits of Floating Solar Power Generation
Regardless of the land price
Using idle water surface owned by the Gov’t
Solving civil complaints
Cooling effect by low water temperature
Reflection and distraction on the water surface
Increased efficiency about 10% (source: K-Water)
Minimizing the destruction of natural green
Excellent results in algae prevention
Eco-friendly structure
(ex. Spawn for underwater creatures)
New demands in solar and composite materials
Job creation in maintenance field in rural areas
Artificial islands, natural learning etc. creation
Core Technology of Floating Solar Systems
Conventional solar power generation on land is expanded to water surface.
Floating technology is added up to the existing solar power technology.
Requires technical capability to secure structural stability and durability on the water up to 20 years.
Analysis and engineering of structures
to ensure safety.
Mooring system to fix the structures.
PV module suitable for the water environment.
Underwater cabling + connection system.
Solar Power Plant
Technology
Floating
Technology
Rank Size (kw) Name of reservior (lake) / Name of Plant Country City/Province Operating from
1 20000 Coal mining area of Huainan City China Anhui Province April, 2016
2 7500 Kawashima Taiyou Solarpark Japan Saitama October, 2015
3 6338 Queen Elizabeth II reservoir UK London March, 2016
4 3000 Otae Province South Korea Sangju City October, 2015
5 3000 Jipyeong Province South Korea Sangju City October, 2015
6 2991 Godley Reservoir Floating Solar PV UK Godley January, 2016
7 2449 Tsuga Ike Japan Mie August, 2016
8 2398 Sohara Ike Japan Mie March, 2016
9 2313 Sakasama Ike Japan Hyogo April, 2015
10 2000 Reservior in Kumagaya city Japan Saitama December, 2014
11 2000 Kinuura Lumberyard Japan Aichi February, 2016
12 2000 Yado Ooike (Sun Lakes Yado) Japan Hyogo January, 2016
13 1751 Hirono Shinike Japan Hyogo September, 2016
14 1708 Yakenoike Japan Hyogo July, 2016
15 1700 Nishi Hiraike Japan Hyogo April, 2015
Top 15 floating solar PV plants worldwide
Design Configuration (Assembly Types)
Configuration
Design for Structural Stability
Optimum frame configuration to simplify load
transfer channel.
Lightweight materials and technology to improve workability.
High-durable frame members.
Proven safety through structural & fluid analysis.
Fatigue test under 2 million cycles of dynamic load, wind
tunnel test, and various load resistance & performance test
to secure structural safety.
Optimum Design for High-durability
Floating Body
Flat Frame
Wind load and water surface motion consideration
Repetitive unit assembly for easy construction +
quality
High-durable, high-strength structure to cope with
- humidity, rust , saline environment
Durability secured and proven in the fatigue
environment caused by frequent movement of water
surface.
Configuration
The structural members (materials) are eco-friendly, high-durability FRP suitable for the wet and humid
floating environment.
The structure satisfies the IFS method of NET #758 that has the optimum configuration to support the solar
power module.
Structure & mooring connection Footrest Vertical member
Solar power module
Maintenance area
Solar power module bearing
member Diagonal bracing
Floating body connection Floating body Solar power module supporting member
Configuration Details
Vertical Member Unit Connection Floating Member Solar Module
Supporting Member
Lateral Beam (Solar Module
Bearing Member)
Vertical
Member
Solar Module Supporting
Member
Floating
Body Unit Connection
Configuration (Structure Material Types)
Steel Aluminum
Fiber-Reinforced
Plastic (FRP) PE (Polyethylene)
Stress (
)
Strain ()
Steel
FRP Composite
Structural Members (PFRP)
Vertical Members (SMC FRP)
Configuration (Structure Material Types)
Mooring System
Auxiliary weights and mooring anchors are
connected through mooring lines.
Indirect areas are reduced through auxiliary
structures.
Operated solely by the gravity of auxiliary
weights without any mechanical system.
Suitable for sites with deep water and big
difference in water level.
Uses multiple auxiliary floating bodies.
Uses multiple auxiliary weights.
Operated solely by the gravity of auxiliary
weights without any mechanical system.
Suitable for sites with deep water and big
difference in water level.
Auxiliary mooring structure
Multiple auxiliary floating bodies
Environmental Impact Assessment
Environmental Impact Assessment
Construction Process
Material Delivery
Unit Build-up
Construction Process
Dispatching Unit
Assembling
Construction Process
Mooring
Completion
Design Samples in Korea
30kWp Floating Solar Power System, Cheongho Lake, Buan, Jeonbuk
Korea Rural Community Corporation, 2012
1,000kWp Floating Solar Power System for Water Inlet at Dangjin Thermal Power Plant,
East-West Power Co., Ltd., 2013
Design Samples in Korea
100kWp Tracking Floating Solar Power System for Hapcheon Dam, Gyeongnam
K-Water, 2013
Four circular structures (25kW) are rotated to track the sun.
Design Samples in Korea
48kWp Floating Solar Power System on Gasa Island, Jeonnam
Korea’s first energy-independent island’s micro grid model
Supplies power to islands
Design Samples in Korea
World’s 4th largest floating solar system
Floating Solar Power System on Sang Ju, Kyoung Buk
LG CNS, 2015
The First Project-Financing Model.
