Optimizing rooftop solar electricity generation

July 28, 2020by absrenewpower


Optimizing rooftop solar electricity generation

As mentioned in our previous article, operations and maintenance is important to optimize solar electricity generation. Depending on the size of the project, scheduled maintenance is necessary to achieve the end goal of reducing utility costs and generate maximum clean energy. The scope of work under every project’s operations and maintenance differs and is decided after surveying the project. In this article, we will talk about how our team evaluated a project in Navi Mumbai and offered scheduled operations and maintenance services to optimize the solar PV system’s generation capacity.

ABS Renew Power recently resumed operations and maintenance services of a 1MW solar pv plant for a major technology consultant firm in Navi Mumbai. The organization had multiple rooftop solar PV systems set up across its office campus. Since the solar PV system was the major energy driver for their office space, it was important for them to maximize their solar electricity generation and cut down their utility costs. With the system being more than 3 years old with limited maintenance, our engineer surveyed the project and proposed the following scope of work.

  1. Manual Module cleaning activity

Mentioned multiple times, one of the major causes of low electricity generation is irregular panel cleaning. As rooftop solar panels tend to accumulate dust and bird droppings, it disallows the solar PV system to generate electricity at its full capacity. To avoid such a situation, our team proposed a manual module cleaning activity once a week to achieve the targeted generation.


  1. Performance monitoring

Daily monitoring of components like DC strings, SCB, ACB, Inverter, Data logger, and SCADA parameters to monitor the Performance Ratio (PR) of the system. Upgrading of the firmware of Inverter & SCADA. As component failure could lead to system failure, regular monitoring is required not only to check the health of the system but to also note if the desired solar electricity generation is achieved.


  1. Preventive Maintenance

This step is important to take preventive measures based on factors such as conditions of the roof, weather, surroundings, component quality, etc. Our team proposed regular checking of strings, lugs, insulator, cables connections related to panels, SCB, ACB, and inverter. Taking such measures reduces system downtime and improves the efficiency of the system. Our team also ensured that all services and precautions were taken without hampering the manufacturer’s warranty. These measures enhance the durability and life of the system.


  1. Corrective Maintenance

The corrective measure helps troubleshoot any faulty equipment as soon as possible to reduce system downtime. This also includes replacing any worn off components. As a solar company in Navi Mumbai, we ensure quick deployment of an engineer onsite.


  1. Durable structure

To ensure a robust structure, our team implemented structure trenching with proper torqueing tools and listed torque table. The scope of work involves grass cutting, cable trenching, and housekeeping activity to keep plant safe and secure from reptiles which can cause severe damages to HV lines.


  1. Audit & Breakdown report

A quarterly plant health analysis to monitor its projected vs actual performance. The report will determine service report improvements, measures taken to implement safety in plant and electrical equipment handling, checking the performance ratio of the plant, etc.


  1. Safety Training

Since the system is available on multiple rooftops, working at height training would be provided on a monthly basis. Similarly cleaning the panels and everyday maintenance activity training would be provided before starting work.

We hope this article helped you understand the importance of operations and maintenance of a solar PV system and how every system has a different line of services involved to ensure maximum solar electricity generation. Visit us next time for more solar case studies.