Considering Battery Storage for your Solar PV installation?

Considering Battery Storage for your Solar PV installation?

If you currently have Solar PV installed, or are considering a Solar PV system, did you know that the average home with solar PV exports as much as 70% of its power to the grid?

Installing battery storage means you can hold onto the excess solar energy you generate. Sound good? Read on to find out more.

 How can Solar PV benefit you?

Solar panel electricity systems, also known as photovoltaics (PV), capture energy from the sun using photovoltaic cells. The cells convert the sunlight into electricity, which can be used to run household appliances and lighting. These cells do not need direct sunlight to work and therefore your Solar PV system can still generate electricity on a cloudy day.

There are a number of advantages to Solar PV, including:

  • Lowering fuel bills – Sunlight is free, so once you’ve paid for the initial installation, your electricity costs will be reduced
  • Environmental Impact – Our expertly designed systems can offer significant reductions in your carbon dioxide emissions
  • Reliability – Our Solar PV systems are fully guaranteed and offer a system life of approximately 20 years


Sounds great doesn’t it? However, solar generation often doesn’t coincide with demand, so on a nice sunny day when you want to be outside enjoying the sun and aren’t using the energy you generate, where does all your extra solar energy go?

It goes back to the grid, and for many homes this could be as much as 70% of the energy you generate.

That’s where battery storage comes in. Installing a battery storage unit means you can hold onto the excess solar energy you generate and use it when you most need it. It works by diverting the excess solar energy during times when it would be exported and stores it in a lithium battery pack. When power demand is greater then it releases it back to the home. In addition to being able to use more of the energy you generate, you can also reduce your electricity bills at a time when we continue to see these costs rise.

What should you consider when selecting a battery storage system?

We continue to see growth in the battery storage industry and further investment in the technology, but what do you need to consider when selecting a battery storage unit?

  1. What is the ‘Useable’ capacity? Capacity refers to the amount of energy in kWh (units) that the battery can store. No battery should ever be drained completely, so you need to be aware of the ‘useable’ capacity and not just the total capacity.
  2. What are ‘cycles’? A cycle is one complete discharge and one complete charge. You need to check how many cycles a battery is warrantied for and then you can calculate how many kWhs (units of electric) your battery will deliver over it’s warrantied lifetime.
  3. What battery chemistry is being used? The main two chemistries available are Lead Acid or Lithium. Lead Acid is very cheap to install but is inefficient and won’t last very long. Lithium (ion or iron phosphate), as used by Powerflow, will last longer and deliver more kWhs (units) during it’s lifetime.
  4. What is the power output? Check the power output before you buy, otherwise you may find yourself drawing a lot of energy from the grid even when you have energy in your battery.

Battery storage from Total Renewable Solutions

At Total Renewable Solutions we work with UK based, industry leading manufacturers, Powerflow and Tesla.

The battery storage units we install use Lithium Ion chemistry and are compatible with new or existing solar pv installations. Installation and setup is quick and easy, reducing the stress and hassle for you.

We will work with you to select the right system, taking into consideration the property, the space you have, the location and system suitability and then come back to you with our recommendations.

Get in touch with us today to find out more and start making the most of the energy you generate!

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