--- title: Amalgamated Plantations Tea Estate Solar | Arrays Ingenieria description: Case study: piling, BOS works and installation & commissioning of ground-mount solar plants at Amalgamated Plantations tea estates in Assam for Tata Power. url: https://arraysingenieria.com/project-amalgamated-plantations-assam-tea-estates-solar/ last_updated: 2026-10-11 source: Arrays Ingenieria (Arrays Ingenieria Pvt. Ltd.) --- Case Study · Tea Estates · Multi-Site I&C # Amalgamated Plantations, Assam: Solar Across Tea Estates Ground-mount solar plants at the tea estates of Amalgamated Plantations (APPL) across Assam: foundations, balance of system, installation and commissioning, estate by estate. The Project ## About the Amalgamated Plantations, Assam project From 2022 Tata Power engaged Arrays Ingenieria on the Amalgamated Plantations programme in Assam's tea belt. The first orders covered BOS works for the plantation sites and the shifting of material from the central warehouse to each estate. In 2023 the company built pile foundations (300 mm diameter, 2.7 m long) for 11 sites totalling 3.8 MWp, and installed and commissioned the ground-mount plants at Chubwa (499 kWp), Kakajan (741 kWp) and Powai (750 kWp). Phase 2 followed in 2024: installation & commissioning at Nonoi (374 kW) and Diffloo (360 kW), orders for Nahortoli (482 kW), RHRC (122 kW), Achabam (272 kW), Naharkatia (440 kW), Namrup (408 kW) and Borhat (347 kW), and a module cleaning service across the programme. In 2026 the company carried out BOS works, piling and material transport on the 2862 kWp Amalgamated project for SolarGridX Ventures (Sustvest). ### Our scope of work - Pile foundations, 300 mm diameter, 2.7 m long, at 11 sites (3.8 MWp) - Earth pits, equipment foundations and module mounting structures - Installation & commissioning of the ground-mount plants - BOS materials: cables, glands and lugs - Module cleaning system service - Material shifting from the central warehouse to each estate ### Photos ## Project facts Capacity: **About 5 MW across tea estates (3.8 MWp piled at 11 sites)** Plant type: **Ground-mount, on-grid, multi-site** Location: **Chubwa, Kakajan, Powai, Nonoi, Diffloo, Nahortoli, Naharkatia, Namrup, Borhat and other estates, Assam** Client: **Amalgamated Plantations Pvt. Ltd. (APPL)** Partner / programme: **Tata Power Solar Systems Ltd. / Tata Power Renewable Energy Ltd. (EPC)** Our role: **Pile foundations, BOS works, installation & commissioning, module cleaning** Year: **2022-2026** ## 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. - Aug-Nov 2022 ### BOS services and logistics Balance-of-system services for the plantation sites, and shifting of material from the central warehouse to Chubwa, Kakajan and Powai. - Nov 2022 ### Installation & commissioning, phase 1 Ground-mount plants at Chubwa (499 kWp), Kakajan (741 kWp) and Powai (750 kWp). - Dec 2022 ### Pile foundations Augered piles, 300 mm diameter, for the plantation plants. - Mar 2023 ### Equipment foundations Material and labour for ACDB foundations at Kakajan and Powai, and further material shifting. - Sep-Oct 2023 ### Phase 2 begins I&C at Nonoi (374 kW) and Diffloo (360 kW); orders for Nahortoli, RHRC, Achabam, Naharkatia, Namrup and Borhat; cable glands and lugs. - Oct 2023 ### Piling at 11 sites Pile foundations, 300 mm diameter and 2.7 m long, for 11 sites totalling 3.8 MWp. - Jan 2024 ### Module cleaning Module cleaning service across the programme. - Mar-Aug 2024 ### BOS completion and support Glands and lugs at Diffloo, Naharkatia, Nonoi, Nahortoli, Namrup and Borhat; module shifting between estates and module replacement support. - 2026 ### 2862 kWp project for SolarGridX Transport of materials, BOS works and piling on the 2862 kWp Amalgamated project for SolarGridX Ventures (Sustvest). On Site ## Challenges and How We Handled Them ### Many estates, one standard With a dozen estates spread across Upper Assam, the job was as much logistics as engineering: material moved from a central warehouse, crews rotated between gardens, and every site was built and documented the same way. ### Soil and monsoon Tea-garden land is soft and wet for much of the year. Augered piles sized for each site, and equipment raised on proper foundations, keep the plants stable and dry through Assam's monsoon. ### Working inside live estates Plants sit near factories, labour lines and plantation roads. Work was planned around the plucking season and estate traffic, with safety lines and posters on every site. 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/)