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Design and Engineering Consultancy services for Solar PV + Battery Energy Storage Projects

Under USAID PACE-D TA, we assisted the MNRE in designing and developing the pilots for solar PV coupled with Battery Energy Storage. The three projects located in Asoti, Haryana for IOCL, Hyderabad, Telengana for BHEL and Neil and Havelock Island, Andaman and Nicobar for REIL.

A)  To design a solar PV- battery storage hybrid plant at Neil and Havelock islands, we conducted the following activities:

  • The solar energy potential at the island was estimated using PVsyst software

  • Optimization of plant capacity, including battery sizing, was accomplished using Homer Simulation Tool

  • Analysis of various scenarios to deduce capacity which will be optimum for the islands. The aim was to design a system that provides minimum Levelised Cost of Energy (LCOE) for solar PV, battery storage hybrid plant

The following system configurations were proposed:

  • Ground mounted solar PV system of 1000 kilowatt peak (kWp) capacity

  • An ESS solution of 1,000-kilowatt hour (kWh) Lithium ion (Li-ion) battery, 1000 kW power conditioning system (PCS) along with a battery management system (BMS) and micro-grid controller unit (MCU).

B) In the BHEL R&D campus, a BESS was designed and couple with existing solar PV plant of 500 kWp.

To acquire technical know-how of various BESS technologies and for performance evaluation, life cycle cost assessment, and application wise cost viability of various battery energy storage technologies, various BESS technologies of different size were proposed. The total capacity of ESS envisaged is 1 Megawatt hour (MWh) which in turn consists of 500 kWh Lithium-ion (Li-Ion) based system, 200 kWh of Flow Battery based system and 300 kWh of the Advanced Lead-acid battery-based system.

 

C) For designing BESS solution for IOCL-Lube Oil Blending Plant in Asaoti, we conducted following activities:

  • Assessed the feasibility of the Li-ion batteries in assisting the reduction of the DG usage at the operational installation of IOCL to possible extent, and also assess the performance of Energy Storage System (ESS) in power balancing, voltage regulation and load following, while working with solar PV.

  • Analysed the technical performance of energy storage systems (life, round-trip efficiency, response time)

  • Assessment to reduce the cost of energy and consumption of diesel for IOCL

A project of 600 kWp solar PV with 300 kWh ESS and 600 kW PCS has been proposed with Li-Ion batteries for storage. The project is proposed after a number of assessments were carried out for optimum storage sizing and solar PV sizing. An operating logic for solar PV and ESS has been designed. The cost-benefit analysis was carried out for the proposed project and savings were estimated.