Green Embassy PV Project; Italian Embassy of New Delhi, India: Basic Design of a Rooftop Grid-tied PV Plant

Project Info


Italy and India


Strategic opportunity for Golder to improve and promote the renewable technologies in India

With the objective of promoting the use of environmentally sustainable technologies, the client contracted Golder Italy to perform the preliminary design of a photovoltaic (PV) power plant for the Italian Embassy in New Delhi, India.

Prior to the design, the Golder team in India performed a preliminary site visit to evaluate the best technological solution applicable to the Embassy’s energy consumption and to identify the possible critical points and constraints that could affect the PV installation on the building roofs.

Golder performed the civil, environmental, electrical design of the PV plant. The basic design included not only the general layout of the plant but also a single line diagram with the existing interconnection scheme, a detailed bill of quantity (BoQ) with a CAPEX estimation based on the Indian market analysis, a review of the existing Embassy earthing and water schemes, a shadow analysis of the surrounding trees in the PV area utilizing PVSyst software, a preliminary dimensioning of the mounting structure and foundation solution, an energy assessment and electrical load analysis basing on the Embassy energy consumption, and a review of all the necessary permitting procedures and authorizations for the installation and connection.

The basic design involved 8 buildings of the Italian Embassy with a total nominal power of 230.4 kWp (225 kW AC) provided by 720 PV modules of 320 Wp each, divided into three different sub-fields. The PV system will be connected to the main HV feeders at a high voltage level of 11 kV according to the New Delhi’s connection requirements.

The energy assessment output performed by Golder provided an estimated annual production of about 402 MWh. The PV plant will be equipped with electrical safety systems, earthing and lightning protection conductors, DC overcurrent and surge protection according to the most recent Indian Normative.

In light of the Indian Government’s National Energy Plan and commitment to projects in solar photovoltaic, the client’s goal is to enter the Indian market making the installation of renewable plants an example to follow, reaching a large number of potential users in India, reducing the electrical consumption of conventional sources and fossil fuels, and reducing the impact on the environment.

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