Discover what's achievable today with smart charging for solar EV systems and how to sync solar energy production with EV charging to help you cut costs, and boost sustainability.

In today's world, where environmental concerns and the need for sustainable energy solutions are at the forefront, the combination of solar power and electric vehicles (EVs) has emerged as a promising combination. But what about smart ev charging for solar systems? Let's explore what's possible right now.​

The Global Shift Towards Sustainable Home Charging​

Home charging is by far the most common method for EV owners to recharge their vehicles. Most of EV charging occurs at home, typically using a home EV charging station connected to the household electrical circuit. As electricity prices continue to climb and the supply of fossil fuels remains unstable, there's a growing global trend towards more sustainable home charging options, with solar power leading the way.​

Charging an EV with household solar panels offers numerous advantages. It provides a free, carbon-neutral, and sustainable source of electricity. However, the output of solar panels can be unpredictable due to changing weather patterns. This is where smart charging solutions come into play, as they help optimize the use of the electricity generated by your photovoltaic (PV) array.​

What Exactly is Smart Charging?​

"Smart charging" is a broad term that encompasses a range of emerging technologies. These technologies rely on Bluetooth and internet connectivity, like Ethernet, to enable communication between your solar panels, the electrical grid, your household appliances, and your EV's home charging port. By doing so, they can enhance the efficiency of your solar EV charging setup.​

Think of "smart charging" in a similar way to a "smartphone" or a "smart home." Just as a smartphone or smart home isn't defined by a single "smart" feature, but rather a collection of software applications that enhance functionality and convenience, the same holds true for smart EV charging solutions in the context of solar EV charging.​

In the realm of solar EV charging, smart charging generally refers to two distinct energy optimization technologies: dedicated smart charging features and home energy management systems (HEMS).​

Dedicated Solar Smart Charging Features​

A dedicated solar smart charging feature can be either hardware or software, depending on the capabilities of your charging station. Its sole focus is on optimizing your EV charging session. These features establish a direct communication link between your EV charger and your household electricity supply, which includes your solar panels. Similar technologies exist for other smart devices and are known as "single appliance optimization" in that context.​

How Dedicated Smart Solar Charging Features Work​

Dedicated smart charging features connect your EV home charger to your solar panels via your home's electrical circuit. Their job is to measure the output of solar electricity from your panels, as well as the availability of green energy in the grid, in relation to the energy consumption requirements of your EV charging station.​

As a "smart" technology, these features can be highly customized. For example, if you prefer to recharge your EV using only solar power, you can set a dedicated smart charging feature to control the current to your charging station. This way, your car will only charge when solar electricity is available, such as during peak sunlight hours when your panels are operating at maximum capacity.​

Home Energy Management Systems (HEMS)​

Home energy management systems take the concept of smart charging a step further. In addition to optimizing the electricity usage of your EV charging station, a HEMS integration also manages the electricity supply for your other household appliances, like your washing machine, air conditioner, fridge freezer, and television.​

How a HEMS Integration Works​

A HEMS integration is a centralized system that is connected to all of your major appliances. Similar to a dedicated smart charging feature, it optimizes the supply of electricity, but it does so in communication with multiple devices, including your EV charger. By monitoring the available solar electricity - both from the grid and that generated by your rooftop panels - HEMS integrations use smart algorithms to determine the best way to distribute this solar electricity.​

This offers several benefits to your household energy consumption. It ensures that your appliances receive the right amount of power at the right time, helping to balance the overall energy usage in your home. For example, it might prioritize using solar power to run the washing machine during the day when the sun is shining, while also ensuring that your EV gets charged efficiently.​

Smart Charging Stations and Further Optimization​

Smart charging stations that are compatible with solar EV systems offer even more ways to optimize your charging setup. These stations come with software that gives you greater control over the charging times  and energy-source consumption of your EV.​

For instance, some smart charging stations can be programmed to start charging your EV when the electricity price is at its lowest. This is particularly useful if you're on a time-of-use electricity plan. Others can be set to charge your EV only when there is excess solar energy available, preventing your home from drawing unnecessary power from the grid.​

Conclusion

smart charging for solar EV systems offers a wide range of possibilities today. Whether it's through dedicated smart charging features, home energy management systems, or smart charging stations, these technologies are making it easier for EV owners to make the most of their solar power systems. By optimizing the use of solar energy for EV charging, we not only reduce our reliance on the grid but also contribute to a more sustainable future.​