Is battery storage right for me?
Battery Storage
- Overview
- Benefits
- How does it work?
- Is it right for me?
- Our Batteries
- Costs & Savings
- FAQs
"I have an existing Solar PV system"
When considering Battery Storage, it’s vital to assess the potential surplus electricity your Solar PV array may generate.
Carefully monitor your Solar PV generation and the amount of electricity you export to the grid, and the difference between summer and winter generation. A 4kW Solar PV system can generate 25-33 kWh of electricity per day in the summer; however, during the winter, the same system may produce only 3-8kWh per day.
The variation in what you can store in the Battery Storage system in summer compared to winter can be significant.
Additionally, it’s worth considering the benefits of charging your battery from the grid with cheaper electricity rates during the winter, as this benefit applies regardless of your Solar PV output.
"What size Battery Storage do I need?"
The average household will consume 5,000 kilowatt-hours of electricity per annum.
This works out at 13kWh per day.
To facilitate circa 13kWh per day you would want a battery system between 10 – 15kWh.
All battery storage systems are “modular” meaning you can add more batteries at a later stage.
The more battery capacity (kWh) you have, the more you can reduce your bills and take advantage of charging on lower rate electricity and selling back to the grid at higher rate periods.
"What is the payback period on my investment?"
Choosing the right Battery Storage systems can have an excellent return on investments owing to the significant savings you can achieve on your energy bills.
The average payback period of investing in Battery Storage ranges between 5 and 8 years!
To calculate the number of years it will take for the financial benefits of the Battery Storage system to payback the investment costs, you can use the following calculation:
Total cost in £’s ÷ annual benefits in £’s = number of years to payback
Divide your average daily self consumption of energy in kilowatt-hours by the cost of the battery
"Will my batteries work in a power cut?"
Our Battery Storage systems all have the capability to provide power in a grid failure / power cut.
It is very important to note that if you reserve 25% of your battery for a power cut then you will only ever have 75% of daily useable capacity.
I.e. if you have a 10kWh battery and you set a reserve of 2.5kWh (25%) in the event of a power cut then your battery will only ever charge and discharge 7.5kWh each day for your daily use.
If you are in an area which has frequent power cuts then you may want to consider a larger storage capacity to keep that extra capacity in reserve.
Solar PV
It is also incredibly important to ensure you are getting the perfect solar system for your needs, and we can help you with this!
Our team of expert engineers will design a system bespoke to your needs, giving you the absolute best out of your system; couple this with a battery storage system and you’re set!
For more information please check out our Solar PV information and get in touch!
Solar PV Panels