Generally, one battery with a storage capacity size of 11 – 12kWh should be enough for a 5kW solar system. However, if the battery you choose has a smaller capacity size, you'll need to invest in multiple batteries for optimal solar energy storage. A 5kW solar system is ideal for homes with 4 or more people.
Moreover, solar batteries help to reduce reliance on the grid, enhancing energy self-sufficiency and potentially lowering energy costs. Several factors come into play when determining the appropriate battery size for a 5KW solar system: Understanding your daily energy consumption is pivotal when considering a solar system with battery storage.
You can expect to break even on your investment in a 5kW solar system in about 13 years. At the same time, the return on investment your system will deliver by the end of its 25-year lifespan ranges from £6,500 to £7,500. With the 0% VAT on solar panels, you can save up to £2,850 on installing a 5kW solar system.
Not only will this allow for more than enough energy generation, it will also enable energy storage for use at night. The average battery size needed for a 5kW system is 11kWh to 12kWh but a larger one can be beneficial for more extensive needs such as off-grid systems.
Some of the disadvantages of a 5kW solar panel system include: High cost: Solar panels are far from cheap. Installing a 5kW solar system will set you back about £7,500 to £8,500. Adding a battery to your system will cost another £9,000 - £10,000, so be sure to carefully consider your budget before making this investment.
While a 4kW solar system can also suffice for 3-bedroom homes, a 5kW system will provide better energy generation, more savings, and better SEG earnings. While most batteries will operate with a 5kW system, an 11 to 12kWh battery is recommended.