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Floating Solar PV Systems

GPEKS is actively involved in the financing and international deployment of Gigawatts of Floating solar PV (FPV).

We are working with leading technology providers and players to promote these technologies. We favour solutions that are safe, low maintenance and cost effective (lowest O&M, LCOE) over the lifetime of the plant, even if that means higher upfront capital cost.

We are also especially focussed on projects that can scale up and be combined with other power infrastructures such as installations on hydro dams and projects for coastal areas.

Why FPV?

In most countries, the installation of large ground-based photovoltaic systems is limited by the scarcity of land resources. Therefore, in addition to small and medium-sized household and industrial rooftop pv systems, large scale PV systems are of significance to the necessity of photovoltaic power generation.

Due to the limitations of traditional land base large ground-based photovoltaic systems, FPV offer an economic and environmental alternative. As a result FPV system have been developing quickly over the last few years, and can provide (when designed properly with quality material) an economic and reliable technology, allowing the FPV systems to provide a great real alternative to ground installation of solar PV system.

FPV Applications

Hydro power dams, water treatment plants, irrigation reservoirs, flood prevention reservoirs
 
Flooded areas (from mining, quarries and pits)

Flood detention ponds, reservoirs, un-used areas

Farming and acquaculture ponds
Coastal areas

 

System Criteria
  Weight
(out of 10)
Features Most effective - Score Least effective/-Score
Safety: 9/10      
Float  

Solid Structure with no risk of leak

Fire resistant against (arcing faults more likely with electrical system on water, and high DC currents)

Inorganic inert materia (Aluminium, metals) - 10

Inorganic inert materia (Aluminium, metals) -10

 

Plastics - 3

 

Plastics - 2

 

Module support structure/Raft  

Material that will not corrode, tear, age, leak toxic materials

Material that will no tear or break apart with (even occasional but possibly strong) waves and wind

Inorganic inert materia (Aluminium, metals) - 8

Inorganic inert materia (Aluminium, metals) - 10

Plastics - 4

 

Plastics - 3

 

Modules  

Work well with more diffuse light of humid environments

PID effectiveness

No corrosion

No water infiltration from the frame of backsheet

Microcrack resistant

No grounding required

Sturdy frame attachment

Sturdy area

Waterproof

Thin Film , cSi

Frameless double glass

Frameless double glass

Framless double glass

Framless double glass

Framless double glass

Framed

Double glass

Framless double glass

pCi

Framed

Framed

Framed

Framed

Framed

Framed

Framed (Plastic EPA backsheet on back)

Framed (poreous plastic backsheet)

Power Production 8/10      
Module  

High Efficiency

Low degradation rate

Low temerature coeficient

Long term production expectancy

cSI

cSi

Thin Film

Micro-crack proof and PID less

Thin Film (aSi, flexible modules)

pSi

cSI

Framed

Inverter   Granular control of modules String Inverters (especially with optimizers) Central inverters
Cost 7/10      
Float     Plastics - 10 Inorganic inert materia (Aluminium, metals) - 5
Support Structure     Plastics - 10 Inorganic inert materia (Aluminium, metals) - 5
Module     pSi - 10, then cSi 9 Thin Film - 6
Mooring     Rigid - 10 Flexible - 8

 

 
 
 
 
 
 
 
 
 
 

Detailled analysis of metallic versus plastic floating solar systems