Go to the previous page
All posts

How to Install Solar Panels: Step-by-Step Guide

Published on
January 15, 2025
Author
Subscribe to newsletter
By subscribing you agree to with our Privacy Policy.
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
Share this post

As an Installer/EPC company, youare likely familiar with the process of installing a solar plant. In this blog, we will not be detailing the installation procedures but rather outlining key processes that can serve as a checklist for your next project. If you are just beginning your journey as an EPC company, this information will help you plan your installation effectively, enabling you to avoid mistakes and delays while successfully installing a solar plant.

While every solar plant is unique as every building is unique, but if you follow certain procedures and standards, it becomes a like an assembly line where you just do things back-to-back.

Before getting into the blog, here are some documents that you should be ready with as an installer/EPC to make the journey easier.

  • Site Survey Form
  • Template for quotation
  • SOP for Installation and Commissioning
  • Operations and Maintenance Checklist

The above documents can be prepared internally or here are some documents from MNRE that can help you create your own version of the document.

Now let us understand the step-by-step procedure with an example throughout this blog.

1. Feasibility and System Capacity

  • Before conducting a site survey for feasibility, it is important to analyze the customer requirements over a call and get the electricity bills and location. This will help understand the capacity requirement and the irradiation, rooftop area, and shadow conditions roughly. 
  • Once you arrive at the capacity, it becomes easier to figure out costing and quotation.
  • This will happen in two ways, first by analyzing their electricity bills for the last 12 months to arrive at the required solar capacity to reduce the electricity to the fullest.
  • Secondly, a site survey is required to understand what capacity can be realistically accommodated on the roof. You can find how to do a detailed site assessment in one of our previous blogs here. Based on the lowest capacity that you arrive from the above two processes.

2. Design and Sizing

Once you arrive at the system capacity, choosing the rating of the solar panels and inverter can be done immediately.  If you have space constraints then you can recommend a highest rating panel available in the market. In most cases, it always makes sense to go for a higher capacity of solar plant considering the increasing electricity tariff.

If the capacity is higher, it is recommended to check with the solar panel supplier and inverter for availability, if the rating of solar panels or inverters as per the design is not available, then you might have to redesign as per the availability.

3. Permits and Approvals

It is important to start the government approvals once you have closed the deal with your client. Start the registration process with the DISCOM for Net metering. Net Metering process has to be done simultaneously to ensure that it is done on time and the consumer can get the benefits of the solar as early as possible.

Also, if the site is residential ,it is most likely that your client is eligible for the PM Surya Ghar Muft Bijli Yojana through which the client can claim subsidy. If eligible, you can get the client registered on the National Solar Portal.

It is always advised to initiate Government processes early on and follow the procedure timely without any delay.

4. Procurement of Materials

It is very important to plan your procurement well in advance. Like checking the availability and prices of materials especially solar panels and inverter as they take up most of the cost of inverter and in order to avoid any delay in the installation process.

Bill of Materials forms the most important document post designing. It is important to prioritize the following things:

  • High ticket items like solar panels and inverters
  • Module mounting structure if it is customized and or elevated.
  • Material/items that have longer delivery timeline/is not available off the shelf/procured from a distant location/vendor to save on cost.

It is also critical to ask for test reports and photos of material before dispatch. Also, it is advisable to strategize favourable payment terms considering even the client won’t be paying the entire amount at once.

5. Installation

In case of sloped roofs, safety lines need to be installed first and foremost. It ensures that safe working condition for your installation team.

The next thing would be clearing out any debris or things kept and figure out power supply and water to start the installation.

The installation procedure includes following steps:

  1. Installation of PV array mounting structure
  2. Installation and testing of structure earthing system
  3. Installation of PV modules
  4. Earthing of PV module frames
  5. DC cabling and installation of DCDB
  6. AC cabling and installation of ACDB and inverter
  7. System protection and safety – Earthing, Lightning Arrestor
  8. Remote Monitoring system installation
  9. Placing of signages and labels.

6. Testing and Commissioning

Once the installation is complete, it’s important to test the system to ensure everything works as it should and it is safe to commission the system.

  • Pre-commissioning tests including checking voltage and current of the system.
  • Commissioning the system
  • Anti-Islanding functionality test
  • Net Metering – This will also involve the DISCOM authorities to visit the site and approve the net meter installation.

7. Maintenance and Monitoring

Remote Monitoring system: Once you configure and connect the remote monitoring system/inverter-based system, it is essential that you provide a demonstration of the mobile application, website and share login credentials with the client.

Panel Cleaning: Although solar panels do not require regular cleaning, dust can accumulate over time, leading to reduced efficiency. Provide clients with tips on safely cleaning their panels or offer professional cleaning services.

Warranties and Aftercare: As an EPC company, it is essential to offer warranties to the rooftop solar plant and inform the client on the same. Additionally, ensure that clients knowhow to contact you for any future support or troubleshooting needs.

8. Conclusion

As a professional solar EPC company, your role is crucial in ensuring that rooftop solar plant is installed correctly and has provides optimal generation. This blog gives a brief understanding and few tips to ensure your next installation is efficient and smooth.

Blog

Our latest blogs

Businesses

How Much Does Solar Panel Installation Cost in India 2025

Looking for affordable solar panel installation? Get a detailed guide on installation, key components, total costs, and additional charges. Get a free quote now!
Businesses

Types of Solar Panels 2025: Cost, Efficiency & Lifespan

Learn about the different types of solar panels and how to select the best quality like cost, efficiency & life span. Learn more now to make an informed choice!
Businesses

Solar for Green Hydrogen: Is It Truly Feasible?

Can solar energy make green hydrogen truly sustainable and scalable? Explore the potential and challenges in this deep-dive article.
Solar Installers

Solar Rooftop Project Permits & Regulations: Key Guidelines

The installation of solar power plants must comply with specific guidelines and regulations set forth by the Ministry of New and Renewable Energy (MNRE) and the local Electricity Distribution Companies (DISCOMs). These guidelines are established to ensure that solar installations maintain high standards of quality and reliability. Compliance includes meeting technical specifications, safety protocols, and performance benchmarks. By adhering to these regulations, rooftop solar plants can contribute effectively to the grid while ensuring they operate safely and efficiently.

Solar Design Fundamentals for Installation

Learn the essential Solar Design Installation fundamentals to ensure a successful solar system setup. Discover key factors, best practices, and expert tips for efficient solar design and installation.
Solar Installers

How to Install Solar Panels: Step-by-Step Guide

Discover how to install solar panels the right way. Follow this simple, step-by-step guide to make your solar journey smooth, efficient, and cost-effective.
Businesses

Green Energy Open Access: Empowering Indian Businesses

Discover how India's Green Energy Open Access policy enables businesses to access affordable renewable power. Learn the benefits and eligibility criteria.
Businesses

Rooftop Solar Potential of India in 2025

Solar rooftop potential is based on a rooftop's size, shading, tilt, and location. As of 2024, India’s renewable capacity exceeds 200 GW, with solar leading at 94.17 GW.
Solar Installers

Solar Site Assessment Guide for EPCs

Learn the key steps of site assessment for solar EPCs. Discover how to avoid costly mistakes & ensure optimal plant performance from day one.
Businesses

Rooftop Solar vs Stock Market: Where Should You Invest?

Is solar a better long-term bet than stocks? Discover how rooftop solar stacks up against market returns and which investment wins in the long run.
SolarTech

Solar Monitoring & Maintenance: Why Critical for Performance

The reason being monitoring is like the pre-requisite to a subject or a topic you are studying. If monitoring is performed well, maintenance becomes much easier and more efficient. Let’s dive in to understand how monitoring is performed in the case of rooftop solar plants.
Businesses

Rooftop Solar Subsidy & Policy in Gujrat 2025

Gujarat’s solar growth is driven by the Surya Gujarat scheme, offering 40% subsidies on systems up to 3 kW. Understand more about solar subsidies in Gujarat today.
Businesses

UP Rooftop Solar: Subsidy Benefits & How to Apply

Explore how homeowners in UP can claim rooftop solar subsidies, reduce bills, and power their homes sustainably. Step-by-step guide inside
Residential

1 kW Rooftop Solar Plant Price in India, 2025

1 kW Solar Rooftop Plant: Minimum Size for Net Metering and Ideal for Average Households. Learn how much space and cost are required for installation.
Residential

5kW Rooftop Solar Plant Price in India, 2025

Discover the 5kW Rooftop Solar Plant Price in India, 2025 with Aerem Solutions. Get insights on installation costs, savings, and benefits of solar energy for your home or business.
Solar Installers

Rooftop Solar Mounting Structures: Types, Benefits & Uses

Rooftop Solar Mounting Structures play a crucial role in solar panel performance. Discover their types, benefits, and best applications for maximum efficiency.
Residential

Rooftop Solar Plant Design: Integrating Aesthetic & Functionality

Make your solar plant a money-saving, eco-friendly asset by integrating it into your building design. Elevate panels to create a gazebo-like space. Explore today!
Solar Installers

Best Solar Design Software Tools & benefit  

Explore solar design software tools for PV plant capacity, shadow analysis, system orientation, panel inverter, financial analysis, energy consumption, and more.
Solar Installers

Maximizing Rooftop Solar Plant Efficiency: Design Tips & Insights

Unlock higher solar output with expert tips on orientation, tilt & shadow analysis. Discover how to design smarter rooftop plants that perform at their peak.
Businesses

Types of Solar Installation Models | Why CAPEX is Best for MSMEs

Types of solar modules & CAPEX Solar Installation for MSMEs: Why It's the Best Option for Reducing Costs and Increasing Energy Savings. Discover different solar models and their benefits for your business.
Businesses

Empowering Solar EPCs: Aerem’s All-in-One Services

Discover how Aerem supports Solar EPCs with financing, design, procurement & more. A complete ecosystem to help you grow faster. Learn how inside!
Solar Installers

How Aerem Empowers Solar EPCs with Complete Solar Services

From offering collateral-free solar loans that make installations more accessible to providing a seamless procurement experience through SunStore, Aerem supports every aspect of your business. Our supply chain finance options ...
Businesses

10 Reasons MSMEs Should Install Rooftop Solar

Rooftop Solar for MSMEs: 10 Compelling Reasons to Install. Learn how solar energy reduces costs, boosts sustainability, and improves business efficiency in this in-depth guide.
Businesses

Solar Loan: Complete Guide for MSMEs & Businesses

Aerem Solar Loan Guide for MSMEs: Finance Your Solar Installation and Save Costs. Discover how businesses can benefit from solar loans with our comprehensive guide.
Businesses

5 Benefits of Solar Loans

Solar Loans Benefits: Top 5 Reasons to Choose Aerem Solutions. Learn how financing your solar project reduces costs, increases savings, and promotes sustainability.
Businesses

How to evaluate solar rooftop EPC quotations

Evaluate solar rooftop EPC quotations carefully, considering offerings, pricing, reputation, and delivery time to choose the right company for your installation.
SolarTech

Rooftop Solar Glossary: Key Terms Simplified

Confused by solar jargon? Our glossary breaks down essential rooftop solar terms, making it easy to understand and invest in solar energy.
SolarTech

Get Your Solar Rooftop Monsoon-Ready | Expert Tips

Worried about your solar plant this monsoon? Discover smart, actionable tips to safeguard performance & avoid costly damage.
Residential

Flat vs. Reducing Solar Loan Rates: What Saves More?

​Explore how flat and reducing interest rates impact your solar loan. Learn which option offers better savings for your investment.​
Businesses

Lower Scope 2 Emissions & Save with Solar Power

Cut energy costs and Scope 2 emissions with rooftop solar. A smart move for a sustainable and efficient business.
SolarTech

Solar Power Plant: Components, Types & Benefits

Discover essential Solar Power Plant Components, their types, and key benefits. Learn how they work to maximize efficiency and savings. Explore now!
Businesses

How to Estimate the Right Solar Installation Capacity ?

Optimize your Solar Installation Capacity with the right calculations and expert insights. Maximize energy savings and efficiency. Read our guide today!
Businesses

Optimize PR & CUF to Boost Solar Efficiency for Peak Performance

Boost Solar Efficiency: Optimize PR and CUF for Peak Performance. Explore proven strategies to maximize your solar system's energy output and ensure long-term success.

Realise your solar potential with Aerem

We understand the unique challenges that India faces when it comes to adopting solar. Our platform is tailored to propel your business with the power of solar, setting the stage for unparalleled growth. Dive into tools, financing and SaaS systems that echo your ambitions