We offer a range of different systems, as follows:
Solar self consumption
Grid independence
Backup power
Weatherproof
This means we are trained to a exclusive premium level for 2024 to install Powerwall and have been approved by Tesla for continued adherence to strict quality requirements. 13.5 kWh of storage, from £7500 for Powerwall 2, and £7750 for Powerwall 3.
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Is Tesla Powerwall 2 right for me? |
Small and medium systems available, from 2.6 kWh of storage. From £4750. Giv-Hy is ideal for new solar systems; Giv-AC is used to retro-fit storage to existing solar systems.
GivEnergy also released the All in One in June 2023 to compete with the Tesla Powerwall 2, and at £7,400 it is a strong alternative.
Tesla's most versatile battery to date, starting at £7750, or £6900 with solar, with 13.5 kWh of capacity, and a 11.04 kW inverter DNO rated from as low as 3.68 kW. The integrated inverter is a game-changer, allowing for one of the most seamless integrations of solar and battery on the planet.
Sigenergy have launched the SigenStor battery system, an integrated solution combining hybrid inverters, highly scalable storage, and EV DC charging. Expand your energy setup with up to 48 kWh of storage. See below for sample pricing.
Inverter Rating (kW) | Battery Modules | Total Battery Capacity | Estimated Price |
3 | 1x 5 kWh | 5 kWh | £6,100 |
6 | 8 kWh + 5 kWh | 13 kWh | £8150 |
12 | 6x 8 kWh | 48 kWh | £8150 |
The 'professional's' choice, we recommend Victron for off-grid installations, installations on three-phase (400V) grid connections, and any installation where the customer wants to include a generator (or 'future-proof' for a generator). The system is also one of the only systems on the market that provides a UPS switchover (Uninterrupted Power Supply: < 20ms) from grid-power to battery power in the event that the grid goes down.
Modular and scalable from 2 kWh to 270 kWh, total flexibility in design. Prices start at about £7,000. A 6.5 kW / 15.4 kWh Victron system costs around £14000.
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Find out moreClick here or Download our Victron Energy Storage System Guide |
This is an overview of pricing, but due to the modular nature of the system, please get in touch or request a quote for pricing for your specific needs and setup.
Inverter Rating (kW) | Battery Modules | Total Battery Capacity | Estimated Price |
3 | 1x 5 kWh | 5 kWh | £6,100 |
6 | 2x 5 kWh | 10 kWh | £7,750 |
6 | 3x 5 kWh | 15 kWh | £9,400 |
12 | 6x 8 kWh | 48 kWh | £17,900 |
*With power cut protection
To upgrade your unit with an 5 kWh module, it should cost around £3,100.
To upgrade your unit with an 8 kWh module, it should cost around £3,500.
To upgrade your unit with the EV DC Charger module, it should cost between £3,500 - £4,000.
With electricity prices currently running at around 22.36 pence per kWh, it is clear that storing excess solar is cheaper than exporting excess to the grid when there is too much solar, and then buying back later off the grid when there isn't enough electricity from the solar.
So a battery investment makes sense as long as there will be sufficient use of the battery overall (i.e. the storage slots purchased upfront actually get used). This comes down to proper sizing (which we can help you with if purchasing from us).
The installed cost of Tesla Powerwall 3 starts at £7750 . Storage capacity is around 13.5kWh and so this gives a cost of around £574 per kWh.
Victron offers the best of both worlds - low (10p per kWh) cost per kWh storage slot and 'whole house' back-up in a power cut.
A 6.5kW / 15.4kWh Victron system costs around £14000.
GivEnergy also offers a low cost per kWh storage slot, but the back-up capability is limited to 2.5kW of power, for which you will need to separate out your 'emergency' loads onto a separate consumer unit. Costs from £4750.
Overall, system choice depends on budget, functionality required, and expected usage of the battery. We can advise on this.
If you would like to know more, please call us, or to request a quote (in our service area), please try our self survey form. You can also use our battery calculator).
We’re experts in battery storage systems.
We’re also passionate about the technology and excited by the tremendous potential it offers to transform the way in which electricity is generated and distributed.
We are technology agnostic; we continuously analyse the batteries and chargers available on the market to ensure we are offering our customers best-in-class technology.
Sometimes our customers are looking for solar PV battery storage with less capacity, or bespoke, with increased UPS capability. As well as Tesla, we offer customised Victron based systems (ideal for off-grid), with a range of batteries including BYD, SimpliPhi, and GivEnergy.
We install within an approximate 3 hour travel time radius of Reading, Berkshire, marked on the map below (click to zoom in):
Call us on 0118 951 4490 to discuss your project, or click "Request a Quote", or email info@spiritenergy.co.uk with your postcode, house number/name for a free quotation.
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Spirit House, 25 Albury Close, Reading, RG30 1BD
(Location formerly known as 44 Portman Road, Reading, RG30 1EA)
Spirit Energy is the trading name of Spirit Solar Ltd · UK Company Number 07138647
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