Rough Pricing (including installation)

Sigenergy SigenStor

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.

*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).

Powerwall

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

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

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).