The revolution in the field of PV substructure

PEG is a EW ground mount design that is high-density, lightweight, highly robust substructure with rapid installation and greatly reduced CAPEX. The design of PEG is fundamentally different from other substructures. It was re-designed from the ground up. Instead of heavy steel posts, many lean rods are used. The PEG design saves approximately 75%+ of steel compared to conventional substructures.

The aerodynamic characteristics of the flat structure close to the ground result in a significantly lower lift at high wind speeds. The lightweight substructure allows for shallow foundations that can be installed rapidly and safely with a convenient, waist high working height. No heavy machinery is required.

Design of Mounting System for Solar Power Plants

It‘s not EPC, it is EPI

Engineering-Planning-Installation

The PEG power plant will be installed rather than constructed. It is based on an innovative system design, which follows the ground surface – the PEG mesh. The ground-nailed substructure clamps the PV panels at about one meter elevation over-ground.

The specially engineered construction design with its flat ‘wave‘ pattern is very durable against environmental impacts. Furthermore at high wind loads the patented construction produces a down-lift, which increases the static characteristics. The patented construction consists of only three main components:
1. Rod
2. Ground plate
3. Top and down plate

The PEG System is a revolution in the field of mounting solutions for solar power plants with framed PV modules. It is unique and specially designed for east/west exposition. Due to the lightweight construction, no foundation is needed. Less material and a simple design lead to reduced labor costs and the phase between planning and commissioning is reduced significantly.

The PEG substructure is the lightest, most efficient and innovative system on the market. Substructures of our competitors are much heavier and more expensive. Most of them need concrete foundations and heavy machines. With PEG, the steel rods of the PEG substructure can also be installed with only a hammer drill.

Standard Ground Plate Version

These are the standard main components for most soil and load conditions. The components are made of galvanized steel.

PEG solar mounting design

Anchor Rod Version

We recommend this version for low ramming depths (e.g. former landfills) or or very soft soil.

PEG anchor rod design

System’s Height & Foundations

 

No foundations required. The rods are rammed into the ground

Ramming depth concluded based on pull-out tests & soil type

Minimum ramming depth required for short & long rods: 500 & 650 mm

Typical ramming depth is ~650-750mm, rarely exceeded 800mm

Above ground height of short rods: 850mm (higher TBD per project if required)

Special anchor rod available for shallow ramming (500mm) or very soft soil

PEG® Engineering

Clustering PEG® power blocks

The whole engineering process has been simplified by a clear standardization with PEG® system blocks. Related to PV panel type PEG® engineering process works with pre-defined power blocks.

The folowing movie is an example of a PEG® solar power plant, built with 90 blocks (each 570 PV modules) on 11.99 ha (29.63 acre). The result is 1.7 MWp/ha (0.7 MWp/acre):

More consistent performance

In contrast to conventional PV module lines, the PEG system utilizes a greater power-generating photovoltaic area.

The flat and east-west oriented PV generator creates a smoother daily averaged electricity yield.

yield of solar power

It is very simple to make something complicated,
but really complicated to make something simple.

PEG® vs. Conventional Mounting Systems

Comparison of: Traditional
Solar Power Plant
PEG
Power Plant
Raw materialsHigh amount of steel, wood and concreteNo concrete, no wood; saving up to 78% steel
Area utilizationMedium, cause system-related free space between straight PV module linesPV module mesh with highest area utilization, 225% increase in MWh/acre versus trackers and conventional fixed tilt systems
Project processEPC: Engineering, Procurement, Construction over several monthsEPI: Quick Engineering, Procurement and Installation over a few weeks
EngineeringLimited layout design due to shading concerns Standardized PEG clusters offering flexible layout design without shading concerns.
Procurement and logisticsIndividual planning and components » complex transportation planning, customer duties and logistic effortsCost-effective process, transport planning and logistic process by container-based units
InstallationHeavy machinery, elevation platforms, skilled labour and high number of man-hours required.Much simpler process with hand tools, smaller teams and mostly unskilled labour; without the need for heavy machines, elevation platforms and cables trenching.
Operation & MaintenanceElevation platforms required, trenching for undergrown cabling typically requiredInstallation on ground level without a need for elevation platform
Energy yieldPeak power generation at noon timeBalanced power generation with better energy yield at sunrise and sunset due to
east/west exposition

Example: Comparison of a Tracker System vs. PEG®

Same location, same area in North South Wales, Australia

Solar trackerPEG vs Solar tracker

Plant system rating of solar tracking system is 7.00 MWp:

Solar tracker land use

PEG® has a system rating of 20.52 MWp on the same construction area:

Land use of PEG
225% increased land yield

Design Robustness of the PEG® Mounting System

  • Wind Tunnel tests successfully completed by IFI in Germany
  • Max wind speed (ASCII 7-10): 160mph (257km/h)
  • Max snow load: ~50PSF (Pound per Square Foot) *
  • Compliance in tropical regions (eg wind regions C in Australia)
  • More than 70 PEG solar power plants have been built worldwide since 2012.
    There have been no problems with the stability of any of these systems.
    Download reference list
  • The Atmospheric Category (Corrosion Classes) is defined per site based on the local code, eg the proximity to the ocean
  • PEG suitable for up to Corrosion Classes C3 (ISO 9223), or the equivalent local code. C4 might be approved, evaluated per project
Wind tunnel solar power plant
cyclone solar power plant

PEG® Technical Data

 Technical Data PEG®
Orientation PV arrayPatented 8° East-West, fixed tilt, aerodynamic proofed (patent-registered design)
BOM (Bill of material)1.105 rods and 2.15 clips per module
DurabilityHot dip galvanized steel rods and pre-galvanized steel plates.
PV modules and clips based on corrosion-free aluminum and glass.
All DC cabling components are weatherproof and UV resistant.
Wind loadsMax wind speed (ASCII 7-10): 160mph (257km/h)
Approved ambient temperatureUp to 50°C / 120°F (up to 55°C / 131°F with Hot Climate Option)
CertificationsClamping approval from module manufacturers.
Wind load certificate by local engineering firm in accordance with local wind codes.
The PEG substructure is UL certified.

Sales

Herbert Heidel

Herbert Heidel

Europe
+49 170 7893357
Email
Matthew Lusk

Matthew Lusk

USA, Canada
+1 209 2475658
Email
Nir Dekel

Nir Dekel

Australia
+972 54 994 6666
Email
Amit Chheda

Amit Chheda

Rooftop & cabling - India
+91 9167775740
Email
Abhishek Deshpande

Abhishek Deshpande

Asia, Africa, Middle East
+91 22 4968 9797
Email
Juan Ramos

Juan Ramos

Spain, Mexico, Central and South America
+49 160 90668416
+34 640 236863
Email
Yoni Ben Mazia

Yoni Ben Mazia

Israel
+972 54 7714967
Email
Christophe Heriau

Christophe Heriau

France
+33 6 13 61 01 48
Email

Internal Sales Service & Project Management

Carolin Kaestner

Carolin Kästner

Inquiries & Offers
Worldwide
+49 9369 98229-6605
Email
Andrea Vidoni

Andrea Vidoni

Project Manager
Worldwide
+49 9369 98229-6604
Email
*: Max load may vary depending on the combination of the site’s wind speed and snow load, to be concluded per site.
Pictures: Jurchen Technology GmbH, Meralli Projects PTY Ltd, Belectric GmbH, Volta Solar BV, WikiImages, IFI