Can You Build a Home Battery Storage System for Under £2,000? A UK Setup Examined
Three solar panels, portable battery storage and cheaper overnight electricity: one Greater Manchester household is taking a different approach to reducing its energy bills.
But could this work for other UK homes?
Home energy storage doesn't always have to start with a large, permanently installed domestic battery.
Some households are exploring a more flexible approach, combining smaller solar installations, portable power stations and time-of-use electricity tariffs to reduce how much electricity they need to buy from the grid.
One particularly interesting example was recently shared by Luke Hudson in the Plug-In Solar UK Facebook community.
Based in Greater Manchester, Luke has been putting together a home energy system with a reported investment of approximately £1,720.
Rather than trying to go completely off-grid, the aim is much simpler: generate some electricity through solar, store energy in portable batteries and make better use of cheaper electricity overnight.
We wanted to examine the equipment, the costs and the thinking behind the project to understand what other households might learn from it.
1. The solar installation: three panels with two different roles
The solar side of the project uses three JA Solar 465W panels, giving a combined rated panel capacity of 1,395W.
However, the panels aren't all connected in the same way.
Two south-facing 465W panels have been mounted vertically on the front of the garage. These are connected to a Hoymiles 800W microinverter.
The reported cost of the two-panel and inverter kit was just £380.
A third, separate 465W panel supplies a BLUETTI portable power station in the garden office.
This arrangement gives the household two different ways to use solar generation:
The garage installation generates electricity through the microinverter.
The separate garden-office panel provides a charging source for a portable battery.
It's a useful example of how smaller solar installations can serve different purposes around a property rather than relying on one large system.
The vertical mounting is also interesting. Panel orientation and mounting position affect generation, so the actual results will depend on the available sunlight, shading and seasonal conditions.
2. Portable battery storage around the home
Instead of investing in one conventional domestic battery installation, Luke has been experimenting with BLUETTI portable power stations in different areas of the property.
The units are used around the living room, dining room, bedroom and garden office.
The bedroom unit also powers the household's 5G broadband router.
The four BLUETTI units identified in the project's equipment breakdown include:
Power station Capacity Reported price
BLUETTI Elite 100 V2 1,024Wh £347.52
BLUETTI Elite 100 V2 1,024Wh £384
BLUETTI Elite 30 V2 288Wh £179
BLUETTI AC50B 448Wh £199 Combined capacity 2,784Wh £1,109.52
That's approximately 2.78kWh of nominal portable battery capacity across the four units.
The advantage of using portable power stations is flexibility. They can be positioned near the appliances they are intended to supply, rather than relying on one central battery.
There are limitations, of course. Portable power stations have individual charging and output limits, and their usable capacity will be lower than their headline capacity once conversion and operating losses are considered.
They also shouldn't automatically be treated as equivalent to a permanently installed home battery connected to a household's electrical circuits.
3. The electricity tariff: making use of cheaper overnight power
One of the most interesting parts of the project is the electricity tariff.
Luke explained that the household had switched supplier and was planning around an E.ON time-of-use tariff with the following reported rates:
Time Electricity price 2am–5am 15.57p/kWh 4pm–7pm 46.87p/kWh
That's a difference of 31.30p per kWh between the cheaper overnight window and the expensive evening period.
The plan is to use Tapo smart plugs to control when the portable batteries charge.
During winter, the household intends to charge the batteries using cheaper overnight electricity and use the stored energy to power suitable appliances during more expensive periods.
The plan also includes running higher-consumption appliances, such as the washing machine and dishwasher, during the cheaper overnight window where practical.
During summer, the charging schedules will be adjusted to make better use of surplus solar generation during daylight hours.
This is an important distinction: the system isn't relying on solar alone. It combines solar generation with energy purchased from the grid at a cheaper time.
4. What is the total investment?
The reported total project cost is approximately £1,720.
Luke explained that this includes:
Three solar panels.
The Hoymiles microinverter.
Four BLUETTI power stations.
Smart plugs.
Main installation materials.
The latest battery replacement.
The listed prices for the four power stations total £1,109.52. The two-panel and inverter kit was reported at £380, with the remaining project expenditure covering the additional panel, mounting materials, smart plugs and other equipment.
This is an important point when comparing the setup with conventional home battery installations.
It isn't a direct like-for-like comparison. The project uses portable batteries distributed around the property rather than one integrated domestic storage system.
But it demonstrates another way of approaching household energy storage with a relatively modest initial investment.
5. How much electricity is it generating?
The early results are encouraging, although it is still too soon to draw conclusions about long-term performance.
Luke reported that the solar panels had generated 3.47kWh during their first few days of operation, despite it being late October in Manchester.
That is a useful early measurement, but it needs to be treated in context.
Solar generation changes throughout the year and is affected by weather, daylight hours, shading, panel orientation and the conditions at the installation.
A few days of generation data cannot tell us what the system will produce annually.
Luke also explained that the household had recently had a smart meter installed and was beginning to monitor actual electricity consumption to understand how much the project reduces grid imports.
That longer-term information will be much more valuable when assessing the financial performance of the system.
6. Can the system provide uninterrupted power?
Another interesting detail from the original post concerns the portable power stations switching between mains and battery operation.
Luke reported that he had tested the changeover and that equipment continued running without interruption, including the household broadband router.
This is particularly useful for equipment that needs to remain powered continuously.
However, the exact changeover behaviour and suitability for sensitive equipment depend on the specifications of the individual power station. Anyone considering a similar arrangement should check the manufacturer's stated transfer time and compatibility requirements.
It is also worth remembering that a portable power station supplying an individual appliance is not the same as providing backup power to an entire house.
7. The real objective: three ways to reduce electricity bills
Luke described the project as a three-pronged approach to managing household electricity costs.
1. Solar generation
Generate electricity during daylight hours and reduce the amount needed from the grid.
2. Battery storage
Use portable BLUETTI power stations to store energy and supply suitable household appliances when required.
3. Time-of-use electricity
Buy electricity during cheaper overnight periods and use stored energy to reduce consumption during expensive peak periods.
The household historically used around 13kWh of electricity per day.
With that level of consumption, there is a genuine opportunity to explore whether shifting some usage and adding solar generation can reduce the amount of electricity purchased at expensive times.
But the key word is opportunity.
The project is still in its early stages, and actual savings have not yet been established.
8. Is this approach right for every household?
Not necessarily, but it raises some interesting possibilities.
A setup like this could appeal to households that:
Want to experiment with solar without immediately committing to a large installation.
Have suitable space for smaller solar panels.
Have access to a time-of-use electricity tariff.
Want portable storage that can be moved around the home.
Prefer to build their system gradually.
Want to reduce grid consumption without trying to go completely off-grid.
There are also practical considerations.
Portable power stations have limited capacity and output.
Charging and discharging them introduces energy losses, and the savings depend on how effectively the household can use the stored electricity.
The electrical installation also needs careful consideration. A portable battery, a grid-connected microinverter and a permanently installed home battery are different types of equipment with different connection requirements.
Anyone considering a similar project should follow manufacturer instructions and check the relevant UK electrical and grid-connection requirements. The fact that equipment is portable does not automatically make every possible connection arrangement suitable or permitted.
UK Power Tech Hub verdict: a different way of thinking about home energy
What makes this project interesting isn't simply the number of solar panels or batteries.
It's the overall approach.
Rather than trying to generate and store enough electricity to run the entire property, the household is looking at how different technologies can work together to reduce the amount of expensive electricity it needs to buy.
Solar generation, portable battery storage and time-of-use tariffs each play a part.
The reported investment of approximately £1,720 makes this a particularly interesting project to follow, especially for households who might find the cost of a conventional home battery installation difficult to justify.
However, we wouldn't claim that this setup will save every household money or that it can replace a traditional domestic battery system.
The real test will be the figures over time.
We would like to see longer-term information covering:
Total solar generation.
Electricity used to charge the batteries.
Energy actually delivered by the batteries.
Changes in grid electricity consumption.
The value of electricity shifted away from expensive periods.
Overall savings compared with the original household consumption.
Ultimately, the question isn't how many batteries you can fit around your home.
It's how much useful electricity they can provide, when you need it, and whether the numbers make financial sense.
That's what makes projects like this worth following.
About the original project
This article was inspired by a publicly shared home energy project by Luke Hudson, posted in the Plug-In Solar UK Facebook community.
We thank Luke for sharing the details of his installation and his approach to managing household energy costs.
The equipment details, prices, tariff figures and early generation results in this article are based on information publicly shared by Luke.
UK Power Tech Hub has organised and examined those details for educational purposes but has not inspected the installation or independently verified its performance.
This is an independent editorial feature. It is not a sponsored review or an endorsement by the manufacturers mentioned.
Original Facebook post: https://www.facebook.com/share/p/1JfM4GNEKx/
Explore BLUETTI and the equipment
Interested in exploring portable power stations and home battery storage for your own setup? Here are a couple of links to get you started.
BLUETTI – Black Friday early deals
Explore BLUETTI's early deals, with up to 50% off selected products.
BLUETTI Elite 100 V2 – Amazon
View the BLUETTI Elite 100 V2 (1,024Wh) on Amazon.
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