Solar Execution Services Steps & Quality Assurance for Rooftop Projects

Site Survey

Detailed Engineering is completed on the basis of a Detailed Site Survey using tools like measuring tape,

digital distance detector etc.

Site Survey

Quality

Shadow casting objects like Parapet wall ,Air Conditioning compressors, Trees, Tower etc., Obstructions

like Water Tanks & Water Pipelines and Location of Termination Point etc is noted carefully to do best

optimized engineering accordingly.

Marking

Foundations for the Module Mounting Structures, Inverters, ACDB and other equipment are marked precisely

to avoid any overlap with obstruction or misalignment during construction.

Quality

Foundation to Foundation distance is particularly marked and measured carefully.

Foundation Casting & Alignment

Concrete or appropriate grade according to design is mixed and casted with the help of templates of the

desired foundation size.

Quality

Distances between Foundation J Bolts are carefully maintained to avoid misalignment and poor erection of

Structures.

Foundation Casting & Alignment

Quality

Uniformity of Height of foundations is ensure using Water Level

7, 14 and 21 days Cube Tests are performed on concrete blocks to ascertain the quality

Foundation Casting & Alignment

Quality

Proper Curing of Foundation is essential to ensuring strength in concrete.

Unloading of Equipment

Equipment used in a Solar Power Plant, particularly the solar modules are prone to breakage if not handled

with care.

Quality

Unloading on to a flat and obstruction free area using a fork lift or hydra crane should be carried out.

Structure Mounting & Alignment

Module Mounting Structures consisting of Legs, Rafters and Purlins are erected and aligned.

Structure Mounting & Alignment

Quality

Alignment of erected structures is checked using Water Level.

Proper Tightening of nuts used for assembly needs to be checked.

Module Mounting & Alignment

Modules are carefully mounted and aligned on the mounting structures.

Quality

Tightness of Nuts holding the modules to the structures needs to checked. Misplacement and Breakage of

modules is high wind conditions because of improper tightening of modules is not uncommon.

Cabling & Conduiting

The Module Strings are connected to inverters, the inverters to ACDBs and the ACDBs to termination point

using Cables which are put inside conduits and cable trays for protection.

Quality

It is to be ensured that conduits laid are straight and without twists or bends.

Cabling & Conduiting

Quality

Conduits are sealed using End Caps and PU Foam

Conduits should be placed properly and permanently using clamps and cement where required

Exposed Cables are placed inside flexible conduits.

Tightness of Cables with connectors is checked.

Ferruling at the start and end of cable is done for easy identification in future.

Inverter & ACDB Mounting & Cable Termination

Inverters and ACDBs are mounted on Wall or Foundation as the Site Conditions permit

Inverter & ACDB Mounting & Cable Termination

Quality

Canopies are provided for ACDB & Inverter if IP65 protection has not been provided by Suppliers

Cable tightness is checked at termination end

Ferruling is carried out for easy cable identification

Body Earthing where required is done for Inverters and ACDB

Earthing

Earthing Strips are laid and connected to Structures, Inverters, Lightening Arrestors etc on one side and

Earthing Pits on the other side for protection of all equipment.

Quality

Straightness of laid Earthing Strips

Proper joints between two Earthing strips needs to be ensured with Nuts & Bolts or Welding

Only copper or GI nuts & bolts are used for connecting earthing strips with GI Earthing Rods

Non conducting material, say, rubber is used to separate the overlapped earthing strips

Weather Station & Communication Cables

Weather Station for measuring solar radiation, temperature, wind etc. is installed and communication

cables are laid inside conduits to connect all inverters and weather station to a common switch from where

the radiation and generation related data can be sent.

Quality

Spacing is maintained between communication cable & Power cables to avoid interference

RS45 Connectors are tightened properly for long term connectivity & to avoid data interruption

Finishing & Touchup

Finishing and Touchup Work like whitewashing of foundations and tying of loose cables is concluded before

system is commissioned.

Commissioning

The Plant is commissioned and the inverters synced with the Grid Current to give seamless electricity

to the available Electrical Load.

Experience Snapshot

200 kW, IIT Kanpur, Uttar Pradesh

200 kW, VIT Andhra Pradesh 130 kW, NIMS Hospital, Kerala 100 kW, VVIT, Andhra Pradesh

100 kW, NCET Karnataka 5 kW, Raheja Residence, Delhi 1 kW, 70 systems, Kerala

About Gensol

Gensol Consultants, found in 2007 is India’s leading Advisory and System

Integrator for Solar PV Power Projects. Gensol is a channel partner to MNRE and

enjoys empanelment with most major Lending Institutions in India.

1,000+ MW 1,000+ kW

Gensol has an advisory portfolio of

more than 1 GW with every 5th MW in

India developed with our expertise.

Being an MNRE Channel partner,

Gensol has executed more than 1

MW of Solar Rooftop Projects across

India.

Gensol is based out of Ahmedabad in

Gujarat but has operational solar

projects across 16 Indian States.

With a 30+ Employee Strength –

Gensol prides itself on having the

best technical talent in industry.

AWARDS

BusinessWorld – India’s largest

weekly business magazine awarded

Gensol with “Hottest Young

Entrepreneur” in 2009.

Economic Times – India’s largest

financial daily awarded Gensol in its

“Power of Ideas” series in 2010.

Gensol was the only non-UK based

firm to be nominated for Global

Consultancy of the Year at

BusinessGreen Leader Awards,

London in 2014.

Solar Advisory & EPC Services

Owner’s Engineer: As Owner's Engineer, we guide our clients or investors through the complete process of project feasibility, financial closure, bid process management, vendor finalization and supervision of project execution up till successful project commissioning which meets our strict quality criteria. Lender’s Engineer: Being consultants to some of the leading lending institutions in the country, we assess the key parameters impacting the returns from the project like generation, cost and conditions of the EPC Contract, preparedness of Project Developer for execution etc. Detailed Engineering and Vetting of Drawings: Gensol Solar Division is staffed with experienced Electrical, Electronics, Mechanical and Civil Engineers who undertake detailed engineering of Solar PV Power plants on behalf of EPC Contractors and vetting of drawings for Project Developers and investors. Permits & Clearances: It takes more than 32 permits and clearances from Nodal Agencies, District Authorities, Distribution and Transmission Companies etc. Gensol has an experienced liasoning team well aware of process and people to acquire these permits in time and in sequence. Detailed Project Report: A Detailed Project Report is one of the most important documents to assess the feasibility of project and to get financial closure. Gensol with its sector expertise and established standing in the renewable energy consultancy not only gives the most exhaustive analysis of the project but also enjoys the confidence of industries, investors and banks alike. Solar EPC Services Gensol, being a channel partner of Ministry of New and Renewable Energy (MNRE) has attained amongst the highest allocation of subsidies for the Solar Rooftop Projects on account of its superior engineering, standardized procurement and quick execution. Gensol has executed projects in the range of 1 kW powerpacks to 400 kW single rooftop power plants.

Gensol Engineering Pvt Ltd | Gensol Consultants Pvt Ltd

Corporate Office 108, Pinnacle Business Park Opp Royal Arcade, Prahladnagar Ahmedabad, Gujarat India - 380015

Email: solar@gensol.in Website: www.gensol.in Phone: +91 79 40068235 Fax: +91 79 40068239 Twitter: gensol_tweets

Gensol is one of the leading consultants and system integrators for Solar Power Plants. We boast of a portfolio of over 800

MW of Solar Photovoltaic Plants. Gensol is also a channel partner to Ministry of New & Renewable Energy and installs

kW scale Solar Rooftop systems on a turnkey basis with more than 1 MW of cumulative installations across the country.

The information contained herein is of a general nature and is not intended to address the circumstances of any particular

individual or entity. Although we endeavor to provide accurate and timely information, there can be no guarantee that such

information is accurate as of the date it is received or that it will continue to be accurate in the future. No one should act on

such information without appropriate professional advice after a thorough examination of the particular situation.