3 Ways to Assess Your Charging Station Power Needs | EN Plus

3 Ways to Assess Your Charging Station Power Needs

Last Updated: 29/02/2024

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3 Ways to Assess Your Charging Station Power Needs

The rise of electric vehicles (EVs) is undeniable, driving the urgent need for an efficient charging infrastructure. As EV numbers surge on the roads, both individuals and businesses are recognizing the necessity of installing EV charging stations on their premises. This process involves various stakeholders, such as location holders, charging station manufacturers, charging point operators, and power distributors. Among these stakeholders, power distributors play a critical role, as they ensure the necessary power supply for charging EVs.

How to Determine Power Supply Requirements for Your EV Charging Station?

power supply requirements for ev charging station

  • Different chargers, like AC for 7kW or 22kW and DC chargers for 60kW, require varying power loads.
  • Calculate Charger Quantity: Determine the total power requirement by accounting for the number of chargers in your EV infrastructure

After obtaining the estimated power requirement, the subsequent vital task is selecting an appropriate power distributor. This article introduces three options to arrange power for your EV charging station.

Option 1: Utilize an Existing Power Connection

You can use the available power connection if the existing power supply fits your EV charging station’s energy demands. This option is often chosen by EV owners seeking private charging with a single charging station.

utilize an existing power connection


  • Verify the connection type and capacity to support the charging station.
  • If the current connection’s capacity is inadequate, you must apply for a sanctioned load increase through the local power distribution company (DISCOM).
  • If the increased load exceeds the threshold of the existing connection, upgrading to a three-phase or high-tension (HT) connection might be necessary.

Option 2: Arrange a New Electricity Connection for Exclusive Charging Stations

Securing a fresh electricity connection is essential when setting up dedicated business charging stations. This is especially crucial for larger establishments like shopping malls, commercial parks, and corporate complexes. Neglecting this specific requirement could potentially lead to power outages.

new electricity connection for exclusive charging stations


  • Assess and compare the estimated power requirements with the available connection options: single-phase LT, three-phase LT, or HT connection.
  • Apply the desired connection type through the local DISCOM (Distribution Company).
  • For HT connections, be aware that DISCOM might impose installation charges based on state regulations.
  • Ensure ownership of the designated charging space or explore the possibility of a prepaid connection with approval from the State Electricity Regulatory Commission (SERC), if applicable.

Minus Metering

Minus Metering, or Reverse or Net Metering, facilitates renewable energy integration. Users with solar panels or wind turbines can send excess power to the grid.

minus metering


Surplus, power from renewables (e.g., solar panels), is fed into the grid if production exceeds consumption.


A specialized meter measures grid consumption and surplus power sent back. It can reverse during power export.


Minus Metering bills for net consumption: grid use minus sent surplus. Generating more can lead to a “negative” bill.


Depending on rules, excess power might credit future bills or be paid out.
This approach promotes the adoption of clean energy solutions, encourages localized power generation, and helps alleviate stress on the grid during peak demand periods.

Option 3: Installing Captive Renewable Energy Generation

For environmentally-conscious EV owners and businesses, installing a charging station powered by solar energy is a sustainable alternative.


  • Assess space availability, as a minimum of 10 square meters is required for a 1kWp solar PV system.
  • Evaluate the benefits of captive renewable energy generation, considering solar energy installation costs and savings in the long run.
  • Explore net metering opportunities to offset energy consumption by returning surplus power to the grid.


Establishing an EV charging infrastructure entails coordination among various stakeholders, and power distributors play a crucial role in guaranteeing adequate power supply. Based on your facility and needs, you have three power arrangement choices: leveraging current connections, arranging new ones, or adopting self-generated renewable energy. Each option offers unique advantages and factors to weigh, ensuring efficient and eco-friendly operation of your EV charging station.

If you have queries or require support, EN Plus is here to help. As the global EV charging facilities and solutions provider, we’re ready to assist you in navigating the process.

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