SECI 300 MW Solar Project, Koppal: Piling and DC Installation
Construction of pile foundations for the 300 MW SECI solar project at Koppal, Karnataka, one of the largest utility-scale jobs in the company's portfolio.
About the SECI 300 MW, Karnataka project
Tata Power Renewable Energy Ltd. (TPREL) issued Arrays Ingenieria an outline agreement on 17 February 2025 for the construction of pile foundations at the 300 MW SECI project.
In July 2025 TPREL extended the company's role on the same project to DC installation: loading and installing modules on 112-module interior and exterior trackers, installing string combiner boxes, terminating the main DC cables, and trenching and laying the cable routes.
Pile foundations carry the module mounting structures of a ground-mount plant, so their depth, alignment and levels decide how the rest of the plant goes up. Arrays Ingenieria's veteran-led site teams work to the EPC's specifications and schedule.
Our scope of work
- Pile foundations, 300 mm diameter, about 1.7 m deep, for the module mounting structures
- Loading and installation of 112-module interior and exterior trackers
- Installation of string combiner boxes
- Termination of 1C x 240 and 300 sq mm cables
- Cable trenching, sand bedding, protection bricks, route markers and warning tape
- DWC HDPE pipe and RCC hume pipe crossings
Photos
How the Project Unfolded
The work, stage by stage, as it was ordered and delivered.
Outline agreement
Agreement for the construction of pile foundations at the 300 MW SECI project, Koppal.
Piling
Augered piles, 300 mm diameter and about 1.75 m deep.
DC installation
Loading and installing modules on 112-module interior and exterior trackers, string combiner boxes, cable terminations and trenching.
Further piling
Pile foundations, 300 mm diameter and 1.7 m deep, with extra items.
Challenges and How We Handled Them
Scale
Utility-scale piling means thousands of piles set to tight tolerances of position, depth and level, every day, for weeks.
Trackers
Tracker structures demand accurate piles: a misaligned pile stops a tracker row from moving freely.
From civil to electrical
Moving from piling to DC installation on the same project shows how one veteran-led team can cover several trades on a large site.
Services Used on This Project
Other Projects by Arrays Ingenieria
