Solar panels and batteries are inseparable in the minds of many. However, the vast majority of solar panel systems in Canada are grid-tied, meaning that they are installed without batteries. So, when does it make sense to install batteries and when is it best to remain grid-tied? Read on to learn about the 3 types of solar panel systems and how batteries are used (or not used) in each!

Off-Grid Solar

Off-grid solar refers to a system where solar panels and batteries are used to generate electricity without being connected to the power grid. These systems include solar panels, a battery bank to store energy and an inverter to convert DC power from the battery to AC power that can be used in a home. Off-grid solar systems are often used in remote locations where connecting to the power grid is not feasible or cost-effective. These systems are great for cabins, RVs, boats, and tiny homes.

Off-grid solar systems are independent of the power grid which can provide greater energy security and flexibility. However, the added battery costs make them more expensive to install and maintain than grid-tied systems. Additionally, they may require more careful management to ensure that the battery bank is charged and maintained properly.

Hybrid Battery Backup Solar

A hybrid battery backup solar system is a type of solar installation that is connected to the grid but also includes battery storage. Solar power flows through the inverter to create usable electricity. From there, electricity either flows to the home, to the battery, or to the grid. This system is designed to primarily act like a grid-tied system when the grid is operating properly. However, in the event of a blackout, this system also has the ability to become an off-grid system.

Any excess electricity that the solar panels create is first used to charge the batteries. Then, once the battery is full, excess electricity is exported to the grid for credit. At night, the battery delivers electricity until there’s none left, then electricity is drawn from the grid. The most useful aspect of a hybrid battery backup system is that it can provide electricity to essential loads when there is a power outage.

The battery only provides the technical benefit of electricity during a power outage. It does not provide much financial benefit. On average, a battery can add $10,000 – $20,000 to the cost of a solar installation.

Hybrid battery backup systems are useful for areas that experience frequent power outages or for those who want to have a reliable source of backup power. They can also help reduce reliance on the electrical grid, making the system more independent and sustainable. They should not be viewed as an investment that generates significant financial savings in Canada.

Grid Tied Solar

A grid-tied system is the most common solar installation type in Canada. Solar panels are connected to the electrical grid and no batteries are used. These systems allow homeowners to use solar power when it’s available, export excess solar power to the grid for credit and draw power from the grid when needed. The grid acts like a battery!

A grid-tied solar system without batteries is an excellent choice for homeowners who want to take advantage of solar power without the added expense and maintenance of battery storage. With lower costs, greater flexibility, and increased efficiency, a grid-tied solar system can be a smart investment for homeowners who want to reduce their carbon footprint and save money on energy costs.

Here are some key benefits of a grid-tied solar system without batteries:

1. Lower Cost: Batteries are a major expense and eliminating them can significantly lower the cost of installation. Without the need for batteries, a grid-tied solar system is more affordable.
2. No Maintenance: Batteries require maintenance, which can add to the ongoing cost of a solar system. By eliminating the need for batteries, a grid-tied solar system can be virtually maintenance-free. This will save time and money over the life of the system.
3. Less Solar Panels Needed: An off-grid system must be large enough to provide backup power during periods of low sunlight. However, a grid-tied system without batteries can be sized based on the homeowner’s electricity needs and roof space.
4. Build Export Credits: A grid-tied system allows homeowners to export excess energy generated by the system to the grid for credit. In Alberta, the solar club can be used to maximize the value of the electricity exported to the grid. This can lead to $0 electricity bills for most or all of the year.
5. Efficiency: Battery storage can be less efficient, as energy must be converted from DC to AC for use in the home and then back to DC for storage in the batteries. By eliminating batteries, grid-tied solar is more efficient and may provide a higher return on investment.

Overall, off-grid, hybrid battery backup and grid-tied systems all have their benefits and drawbacks depending on this situation. Please reach out to Glean to learn more about which system will best fit your needs or send us an email at info@goglean.ca

What is Glean?

Glean is a broker of solar quotes that was built by Canadians to make solar easier for Canadians. We provide you with 3 solar quotes, an easy-to-compare quote summary (that includes a detailed financial analysis) and a quote review call to answer your questions. Our service is free for homeowners! With Glean, there’s no back-and-forth with multiple installers. You get our unbiased opinion to help you make the best decision for you and your family!