Scientists Plan Solar and Wind Power Stations to Charge Electric Vehicles in Pakistan

Scientists and engineers in Pakistan are working on a plan to power electric vehicle (EV) charging stations using energy from the sun and wind. The goal is to build these stations at four locations along major highways across the country. By using clean energy instead of fossil fuels, the project could help reduce air pollution and fight climate change. This research is one of the first of its kind in Pakistan and could change how people travel in the future.

Around the world, more and more people are driving electric vehicles. In 2020, there were over 10 million electric cars on the road, and that number keeps growing. Experts believe that by 2025, almost 60 million new electric vehicles could be sold each year. By 2030, half of all new cars bought worldwide could be electric.

One big problem with electric vehicles is finding a place to charge them. Charging stations are still hard to find in many areas, especially outside of cities. In places like rural Pakistan, the electric grid is not always reliable or available. This makes it hard for people to switch from gas-powered cars to electric ones.

Another challenge is making sure EV charging stations use clean energy. If a charging station gets its electricity from burning coal or oil, it still causes pollution. That is why researchers want to use solar panels and wind turbines to power these stations. This way, the vehicles and the energy that charges them are both clean.

The research team picked four sites along highways in Pakistan to test their ideas. The locations are Hakla Motorway, Bhera Motorway, Northern Bypass in Karachi, and the Karakoram Highway. Each place gets different amounts of sunlight and wind, so the researchers can see what works best in different conditions. This helps them build a model that could be used across the whole country.

At the Hakla station, six fast chargers are set up with a peak power of 900 kilowatts. This station serves about 25 electric vehicles per day. The Bhera station also has six fast chargers with the same power level but handles around 30 charging sessions each day. Both stations use Level 3 direct current fast chargers, which can charge cars and buses very quickly.

The design does not use batteries to store energy. Instead, it uses something called net metering. When the solar panels or wind turbines make more electricity than the station needs, the extra power is sent back to the main electric grid. When the station needs more power than the renewable sources can give, it pulls electricity from the grid. This saves money because batteries are still very expensive.

The team used a computer program called HOMER Grid to test different setups for each station. They tried four different options: grid only, grid with solar panels, grid with wind turbines, and grid with both solar and wind combined. The software helped them figure out which setup would cost the least and produce the cleanest energy. The results showed that using solar panels connected to the grid was the best option.

This kind of charging station is important for Pakistan's future. The country has a national plan to grow the number of electric vehicles on the road. Building clean energy charging stations along highways supports that plan and means people will not have to worry about running out of charge on long trips. It could also inspire other countries to do the same.

Road transport causes about one-quarter of all greenhouse gas pollution in the world. Switching to electric vehicles can help reduce that amount. But the switch only truly helps the environment if the electricity used to charge the cars is clean too. That is exactly what this project is trying to make happen in Pakistan.