When it comes to Solar Battery Storage, the cost of the item itself is the largest single component, followed by the cost of installation. The cost of the battery will depend on your home and your specific requirements, so we have provided some information on what you might expect to pay for a battery of a certain size.
Battery Capacity and Unit Price
The cost of a battery will be the largest single cost. 5kWh batteries are typically priced from £2,000/3,500 to 10kWh batteries that are priced from £4,000/6,000. 10kWh of capacity is usually sufficient for larger households, or those wanting to store enough power for most of the evening.
Installation and Labour
Labour costs for the installation of a battery storage system typically range from £500 to £1,500 on top of the price of the battery. In some cases, homeowners may also need a hybrid inverter as their existing inverter may not be compatible with the new battery. These hybrid inverters typically cost between £800 and £1,500. As with solar panels, most suppliers of battery storage systems will quote for the supply and fit of the system as a package. Therefore, it is always best to ask for the full installed price of the battery storage system, rather than just the price of the battery itself.
What Pushes the Cost Up
Properties with older systems (pre 1998) and small existing consumer units can require upgrades prior to the battery being commissioned at additional cost of approximately £300 – £600. Also properties with extended distances between the solar panels and battery storage in loft spaces (commonplace in detached houses and large semi-detached houses) may require longer cable runs. For Solar Battery Storage Hereford see https://www.precisiongreenenergy.co.uk/renewables/solar-battery-storage/hereford/
Comparing Quotes Fairly
When comparing quotes make sure you are comparing apples with apples. It is essential that you have at least three quotes and that each quote is itemised. This should include the cost of the battery, inverter (if required), the cost of the installation (labour) and the cost of any electrical work required to connect the battery to your property. Make sure the quote includes the cost of the consumer unit upgrade if required. A cheap quote with a low headline price but with no inverter included is not comparable to a full package quote with inverter included.
Payback in Practice
It depends on current energy costs (see current government guidance on energy costs for the latest figures). However, using current costs most homes will pay back their investment in 7-12 years. This will depend upon the amount of solar power being generated and the pattern of usage of the stored power in the evening hours.
Being aware of your budget and knowing the correct questions to ask will put you in a powerful position when approaching suppliers.