Solar PV systems are an excellent way to reduce energy bills and reliance on the grid. However, without battery storage, excess electricity generated during the day is sent back to the grid—often at a lower rate than what you pay to buy electricity. Adding a battery to your existing solar PV system allows you to store surplus solar energy generated when your consumption is low, and use it later during peak times, reducing the amount of electricity you need to purchase from the grid. Additionally, battery storage systems can be charged from the grid during cheaper off-peak hours, enabling you to further reduce your energy costs by using this stored energy when grid electricity rates are higher.
At Greenfields, we regularly install battery storage solutions for customers with existing solar PV systems. Our experienced team can assess your system, recommend the most suitable battery storage solution, and manage the installation process to ensure a seamless upgrade. But is adding battery storage right for you? Let’s explore the benefits and key considerations.
What Are the Benefits of Adding Battery Storage?
The biggest advantage of battery storage is the reduction in energy bills. Without a battery, excess electricity generated during the day is exported to the grid, often at a lower rate than what you pay for electricity. Later, when your solar panels are not generating enough power to meet demand—such as in the evening—you must buy electricity from the grid at peak rates. By storing excess energy, a battery allows you to use your own solar power when you need it most, reducing reliance on expensive grid electricity and lowering your overall energy costs. Additionally, battery storage provides backup power during outages and offers greater energy independence by reducing your reliance on the grid.
Can I Retrofit a Battery to My Existing Solar PV System?
Yes, in most cases, you can add battery storage to an existing solar PV system, but the process depends on how your current system is set up.
- AC-Coupled Batteries – These are the easiest to install in an existing solar PV system, as they work independently of your current inverter. Popular options include Tesla Powerwall and other plug-and-play battery solutions.
- DC-Coupled Batteries – These systems are integrated with your solar inverter and can be more efficient, but may require an inverter upgrade if your current one is not battery-compatible.
Greenfields can assess your existing setup and recommend the best approach for your system.
Is Battery Storage Worth It for Your Property?
When Battery Storage Makes Sense:
- You want to store excess solar energy for later use rather than sell it back to the grid at a lower rate.
- You live in an area with frequent power outages and need backup electricity.
- Your energy provider uses time-of-use tariffs, making battery storage a cost-effective way to reduce bills.
- You’re planning to go off-grid or reduce your reliance on utility companies.
When Battery Storage May Not Be Necessary:
- You already receive a good price for exporting excess energy to the grid (e.g., through the Smart Export Guarantee).
- Your energy consumption is low, and you use most of your solar energy during daylight hours.
- The upfront cost doesn’t justify the savings based on your energy usage patterns.
How Greenfields Can Help
At Greenfields, we offer retrofitting of battery storage systems to existing solar PV setups. Our expert team will assess your property, recommend the best battery solution, and handle the entire installation process. Whether you need a simple AC-coupled battery or a full system upgrade, we ensure a seamless transition to maximise your solar energy use.
Adding battery storage to your existing solar PV system can offer significant benefits, including lower energy bills, greater energy independence, and backup power. While it’s not necessary for everyone, it’s a valuable upgrade for many property owners looking to get the most out of their solar investment.
Get Expert Advice on Battery Storage
Call us: 01768 210 241
Email us: info@greenfieldspenrith.com
Visit us: Unit 3a, East Lakes Business Park, Penrith CA11 9BB
Not sure if battery storage is right for you? Contact Greenfields today for expert advice and a free consultation.