Different O&M solutions, implemented at PEG projects globally, are detailed in this webpage.

1) Cleaning Solutions

1.1) Gal-In system, a cost-effective cleaning system for PEG® PV solar power plants


The Gal-In module cleaning solution is lightweight, only 18 kg (40lb) and easy to operate. Its axis allows comfortable transportation and guarantees complete contact between the brush and the modules during the cleaning. Its 10 water nozzles allow homogenous distribution of water on the complete surface of the module for efficient cleaning.



Two operators are required to operate with each person located on opposite sides of the PEG block. The brush is moved by pulling a rope. Based on its global use ~865 modules can be cleaned per hour with two operators. This system is suitable for small-scale projects and remote sites. The system is frequently and commercially used at PEG sites in Israel and India.


Jurchen Technology India Private Limited
414, The Summit Business Bay (Omkar)
Andheri – Kurla Rd, Opposite to Cinemax, Chakala,
Andheri East, Mumbai, Maharashtra – 400093. India.

Board No. Phone: +91 22 4968 9797

1.2) GEVA-BOT PATROLLER, Robotic cleaning solution for PEG® solar power plants


The GEVA-BOT Patroller is a reliable and user-friendly robot for module cleaning, which is in commercial use globally over the last 15 years. It can be supplied for both wet and dry cleaning. Its width varies from 1 meter up to 6 meters. The robot width required for the PEG® is ~1m or ~2m wide, subject to the module dimensions and orientation. It is lightweight (~12kg for the ~1m brush width) and easy to carry and operate. It is powered by a battery which can last up to 4 hours. A trailer with a  water tank can be supplied as well, which can be towed by an SUV/Truck/Tractor during the cleaning process.

GEVA-BOT Benefits:

  • Can operate in most environments and climates
  • Quick site setup and simple operation
  • Significant reduction of cleaning time by up to 50%
Robot type
PEG Orientation
Patroller 1000
Patroller 2000
Length1 m (3,3 ft)**2 m (6,6 ft)**
Speed3 secs/m
(3.3 secs/yd)
3 secs/m
(3.3 secs/yd)
Cleaning speed~220 modules/hour~470 modules/hour
Water Consumption
(WET version)
1 liter/Panel
(0.26 gal/Panel)
1 liter/Panel
(0.26 gal/Panel)
Weight12.5 kg (27.6 lbs)16 kg (35.3 lbs)
Battery operation timeUp to 4 hoursUp to 3.5 hours
Battery charging time6 hours6 hours
Warranty12 month12 month

**: The Robot length is customized according to the module actual sizes.


1 Nir st. Be’er Tuvia
Phone: +972 52 5400 400
Email: solar.gsi@gmail.com
Web: www.geva-bot.com

1.3) Telescopic Arm by Qleen (PTS System Qleen)

qleen brush

Motor brush “Vario light 50”

  • 50 cm (~20 in) width
  • 4,7 kg (10.4 lb) weight
qleen pole

Carbon poles

  • Standard pole 1.6 m (~5 ft) long, with an extendable arm of up to 12m (~39 ft) long
  • Easy „click-in“ function to lock the extendable arm
  • Very light
  • Diameter: 42 mm (~1.6 in)
  • Additional extension up to 15m (~49 ft) is possible.
  • A standard PEG block which is up to 30x30m (max) (~98×98 ft), can be cleaned easily. The use of a glide shoe, a semi-circular brush, is recommended to prevent the pole from scratching the modules.

Running gear

  • Gel battery: lasts approx. for one working day
  • Cable tray 50 m (164 ft)
  • No electricity generator nor suction pump are required


Simple to setup and operate. Everything other than the water tank is provided with the Qleen system, including the electric power (battery), suction pump and cable tray. The cleaning of a PEG block requires access from both edges of the block since the maximum pole length is 15 m (~49 ft).

Technical and economic specifications

  • Cleaning speed: ~180 sqm per man-hour (with an experienced operator)
  • Approx. 200 liter water / hour
  • The system requires minimal maintenance. There is a fine filter at the water inlet, which has to be cleaned regularly. Apart from charging the battery there is nothing else to do. No regular inspection required.
  • The manufacturer Lehmann has delivered more than 1,200 QLEEN tools during the last 8 years for different regions globally in the Middle East, North Africa, South and Central America and Europe.


PTS Reinigungssysteme GmbH
Wolfgang- Paul-Straße 4
53121 Bonn, Germany
Phone: +49 228 43337-0
Fax: +49 228 43337-29
Internet: www.pts-net.de
Email: bn@pts-net.de

2) Vegetation Management

2.1) RAYMO- mower for PEG® solar power plants

RAYMO TORPEDO robot + R42 FLEX cutting deck

  • The mower includes an all-wheel drive and is available in hybrid and purely electric versions.
  • Quick swap between all-electric and plug-in hybrid operation
  • Minimal noise pollution and emission-free in all-electric mode
  • Simple and safe control thanks to the zero-turn radius steering system and all-wheel drive


  • A single operator with a remote control
  • Mowing speed: 1500 sqm/hour (~2500-3000 sqm/hour with the auto-drive capability – next development)
RAYMO TORPEDO + R42 FLEX – Technical Data
Dimensionslength: 205 cm (81 in)
width: 115 cm (45 in)
height: 51 cm (20 in)
weight: 238 kg (525 lbs)
Number of operating PersonnelOne
Hybrid Operation time6 - 8 h
Fully Electric Operation time4 -5 h
Mowing performance
on a PEG plant
1500 sqm (0.37 acre) per hour
/~6.7 hours per Hectare
(~2.7 hours per Acre)*

*: depends on the soil conditions and module size


raymo s.r.o.
Smolovy 241
CZ-58001 Havlickuv Brod
Czech Republic

2.2) Ground Cover Sheet

The weed barrier ground cover sheet is a geotextile that is very cost-effective solution for vegetation control. It is a commercially available product in use for farming and industrial activities to avoid vegetation growth while allowing water flow. The product has a lifetime guarantee of 4-6 years although it’s used under the PEG shaded from the Sun should extend the product’s life to 10+ years. Moreover, different studies have shown high-quality sheets can last for more than 40 years. The first use of this product since January 2019 had a proven ROI of ~18 months due to avoided landscaping O&M costs. The sheet is not flammable. Woven and non-woven geotextile varieties allow for different water flow rates for storm water to penetrate avoiding water from accumulating underneath.

2.3) Seeding

Pre-seeding  with low growing vegetation.. This is done prior to the construction phase, at least four months in advance, to allow the turf (grass sod) to develop prior to the start of construction start.

In general, different landscape lawn mixtures (RSM 7.) can be taken into consideration. Low clover species, such as white clover, which increase the soil’s nitrogen content, can be sown as an admixture. Other grass species could be sheep fescue and red fescue. The sowing period should be whenever the soil temperature is above 10°C. A sufficient and frequent water supply is required for fast and successful germination. One seeding method could be the use of a special sheets with implanted seeds, which allows quicker seeding while the sheets is dissolved within a few weeks.

The project-specific schedule, site-specific weather and the local norms and codes should be taken into consideration when planning the seeding.

2.4) Top soil layer

Another solution implemented at PEG projects is particular ground preparation leading to robust vegetation control over a long period of time. The site should be levelled and a basalt crusher dust spread, watered and compacted to a depth of approximately 30mm (1.18 in). This solution not only prevents vegetation growth but also allows quick and easy access under the PEG for O&M purposes.

2.5) Spraying / Herbicide use

Controlling vegetation growth through herbicide might not be an environmentally friendly solution, however it is an acceptable practice in some countries and is implemented at solar systems globally.
Herbicide might include active ingredients which may damage the galvanised coating of the PEG substructure. Due to that, Jurchen Technology must approve the herbicide product prior to its use under the PEG system.
Electric motorized trolleys have been developed by few clients to tow tanks for spraying herbicide around and under the PEG solar system.

3) Site inspection and Module Replacement

3.1) Walking paths

The walking paths between the PEG blocks allows access to the DC plant. The location and width of the walking paths is determined during the project design and should consider the O&M requirements. A minimal width of the walking paths should be ~1m (3.3 feet) to allow comfortable access by the O&M personnel. The location and size of the cable trays should be considered as well. The module replacement could be done from the ground level, by reaching from underneath the array with a 12 volt drill or by removing all modules from the edge of the block up to the faulty module.

walking path in a PEG solar power plant

3.2) Trolley for access underneath the modules

Trolleys allow easier access under the PEG system. Flatter ground allows easier access.. The PEG height, determined during the system design, should consider underneath access by O&M personnel and their equipment, with the minimum short rod height 700mm above ground. Removing the module from underneath is possible through the ~70mm gap between the modules in the East-West direction. This method is implemented by one of the EPC and O&M service providers for PEG projects in Australia.

3.3) SMB Multiboards

Another method to access the modules can be from above, using the SMB Multiboard, which allows O&M personnel to safely walk on the modules without causing any damage. The product is tested and TÜV certified for micro-cracks on PV modules. Two O&M personnel are required to use this methodology.
Module replacement is possible with this methodology as was tested by Jurchen Technology engineers. Careful attention is required to perform this task safely without any damage to the O&M personnel or the modules.

Approval from the module manufacturer is required before the use of this solution.


SMB – Solar Multiboard GmbH
Oberstraße 7
D-52388 Nörvenich
Tel: +49 (0) 24 26 – 95 87 90
Fax: +49 (0) 24 26 – 95 88 60
Mobil: +49 (0) 160 – 8 27 82 44
E-Mail: info@solar-multiboard.de
Web: www.solar-multiboard.de


Nir Dekel

Nir Dekel

Head of Sales
+972 54 994 6666
Herbert Heidel

Herbert Heidel

Matthew Lusk

Matthew Lusk

USA, Canada
+1 209 2475658
Amit Chheda

Amit Chheda

Rooftop & cabling - Asia
+91 9167775740
Yoni Ben Mazia

Yoni Ben Mazia

+972 54 7714967
Christophe Heriau

Christophe Heriau

+33 6 13 61 01 48
Karim Asali

Karim Asali

Middle East, Africa
+49 172 6397143

Internal Sales Service & Project Management

Andrea Vidoni

Andrea Vidoni

Project Manager
+49 9369 98229-6604

PEG Project Development

PEG Design

Volta Solar

Our Partner Volta Solar


Our Partner Meralli Projects

* Explanation of key figures:
Machine costs: Referring to all machines for the installation of the DC system, compared to a conventional substructure
Labor costs: Labor for complete installation of the PEG solar power plant, incl. inverter stations, compared to a conventional substructure
Logistic costs: All, including machinery and labour, to the site and onsite, compared to a conventional substructure
All figures are indicative, may differ regionally and assuming the use of 380-400W modules

Jurchen Technology GmbH, Meralli Projects PTY Ltd, Belectric GmbH, Volta Solar BV

All data may subject to alterations and errors.