--- title: Rossell India Tea Estate Solar Plants | Arrays Ingenieria description: Case study: piling, BOS works and installation & commissioning of ground-mount solar plants at four Rossell India tea estates in Assam, for Tata Power. url: https://arraysingenieria.com/project-rossell-india-assam-tea-estates-solar/ last_updated: 2026-10-11 source: Arrays Ingenieria (Arrays Ingenieria Pvt. Ltd.) --- Case Study · Tea Estates · Ground-Mount I&C # Rossell India Tea Estates, Assam: Ground-Mount Solar I&C Four ground-mount solar plants for Rossell India's tea estates in Assam, each built from the foundations up to commissioning by Arrays Ingenieria for Tata Power. The Project ## About the Rossell India, Assam project Kharikatia Tea Estate (302 kW, 2023) came first: pile construction, installation & commissioning of the ground-mount plant and its BOS works. At Nagrijuli Tea Estate the company piled the site in 2024 and installed and commissioned the 493.24 kWp plant in 2025, with its BOS materials, additional cabling and module cleaning system. Romai Tea Estate (170.51 kWp) followed the same pattern in 2025, and in 2026 the company piled, supplied BOS materials for, and installed and commissioned the 367 kW plant at Dikom Tea Estate. ### Our scope of work - Pile foundations - Earth pits, equipment foundations and module mounting structures - Installation & commissioning of each ground-mount plant - BOS materials, inverter stands and additional cabling - Module cleaning system services ## Project facts Capacity: **302 kW, 493.24 kWp, 170.51 kWp and 367 kW** Plant type: **Ground-mount, on-grid** Location: **Kharikatia, Nagrijuli, Romai and Dikom Tea Estates, Assam** Client: **Rossell India Ltd.** Partner / programme: **Tata Power Solar Systems Ltd. / Tata Power Renewable Energy Ltd. (EPC)** Our role: **Pile foundations, BOS works, installation & commissioning, module cleaning** Year: **2023-2026** ## Planning a similar project? Talk to our veteran-led team about EPC, installation & commissioning or civil works. [Get a Free Quote](https://arraysingenieria.com/free-solar-quote/) Project Timeline ## How the Project Unfolded The work, stage by stage, as it was ordered and delivered. - Mar-Apr 2023 ### Kharikatia Tea Estate, 302 kW Installation & commissioning of the ground-mount plant, pile construction and rooftop-services BOS. - Sep 2023 ### Kharikatia close-out Cable glands and final BOS items. - Oct-Nov 2024 ### Nagrijuli Tea Estate, 493.24 kWp Installation & commissioning, BOS materials, pile foundations and module cleaning services. - Dec 2024-Jan 2025 ### Nagrijuli additions Additional BOS cabling. - Jan-Apr 2025 ### Romai Tea Estate, 170.51 kWp BOS materials, pile foundations, installation & commissioning, module cleaning, inverter stands and additional BOS. - Dec 2025-Feb 2026 ### Dikom Tea Estate, 367 kW Installation & commissioning, piling services and BOS materials. On Site ## Challenges and How We Handled Them ### Four estates, four sizes From 170 kWp at Romai to 493 kWp at Nagrijuli, each plant was sized to the estate's load and land, but built to the same EPC specification and checklists. ### Repeat client, rising scale Rossell's estates came back for a second, third and fourth plant between 2023 and 2026, each time with the full chain of piling, BOS, I&C and cleaning. ### Foundations first Piling was done ahead of installation on every estate, so structures went up level and true on soft tea-garden soil. Installation & Commissioning ## What Our I&C Scope Covered The standard ground-mount installation & commissioning scope we deliver to EPC majors' specifications, after the mandatory quality and safety training and contractor safety sign-off. ### Civil works - Earth-pit chambers and covers (RCC/PCC) - Foundations for inverters, ACDB, ITB and accessories - Cable trenches - Cube tests to validate concrete strength ### Mechanical - Module mounting structure installation - Module installation and interconnection - Canopies for wall-mounted inverters and junction boxes ### DC side - String wiring from modules to inverters, tagged and identified - DC cables in conduit or tray - MC4 connectors crimped male and female - Array junction boxes ### AC side and protection - Inverters and inverter terminal boxes - AC distribution board (ACDB) - LT AC cables in trays to the approved layout - Reverse power relays installed and commissioned ### Earthing and lightning - Earth electrodes and pits - Earthing strips for structures, inverters and ACDB, including welding - Lightning arrestors ### Monitoring and cleaning - Data monitoring system (SCADA / power manager) - Module cleaning system with pump and motor - DWC pipe for RS485 communication cable ### Safety and handover - Safety lines and safety posters - Material unloading, storage under covers and care until handover - Third-party validation of tools where required - Testing, commissioning and handover [The full commissioning checklist](https://arraysingenieria.com/solar-plant-commissioning-checklist/)[Our I&C service](https://arraysingenieria.com/solar-installation-commissioning/) Related ## Services Used on This Project [Installation & Commissioning](https://arraysingenieria.com/solar-installation-commissioning/)[Pile Foundations](https://arraysingenieria.com/service-piling/)[Ground-Mount Solar](https://arraysingenieria.com/service-ground-mount/)[Solar for Tea Estates](https://arraysingenieria.com/solar-for-tea-estates/)[All Projects →](https://arraysingenieria.com/projects/) More Case Studies ## Other Projects by Arrays Ingenieria [Tea Estate · Inaugurated by the CM: **Koomber Tea Estate: 595 kWp Solar Plant, Inaugurated by the Chief Minister of Assam**595 kWp · Koomber Tea Garden, Silchar, Cachar district (Barak Valley), AssamRead the case study](https://arraysingenieria.com/project-koomber-tea-estate-595kwp-solar-cm-inauguration/)[Tea Estate · Ground-Mount: **Jay Shree Tea: 1 MW Solar at Towkok & Manjushree Tea Estates**1035 kWp (535 + 500 kWp) · Sonari, Charaideo district, AssamRead the case study](https://arraysingenieria.com/project-jayshree-tea-1mw-solar-assam/)[Tea Estate · Ground-Mount: **Orangajuli Tea Estate: 450 kWp Ground-Mount Solar Plant**450 kWp · Orangajuli, Panerihaat, Udalguri district, AssamRead the case study](https://arraysingenieria.com/project-orangajuli-tea-estate-450kw-solar/)