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  • Bolt Plus 920W Plug-In Solar Kit with Battery
  • Bolt Plus 920W Plug-In Solar Kit with Battery
  • Bolt Plus 920W Plug-In Solar Kit with Battery
  • Bolt Plus 920W Plug-In Solar Kit with Battery
  • Bolt Plus 920W Plug-In Solar Kit with Battery
  • Bolt Plus 920W Plug-In Solar Kit with Battery
  • Bolt Plus 920W Plug-In Solar Kit with Battery
  • Bolt Plus 920W Plug-In Solar Kit with Battery
  • Bolt Plus 920W Plug-In Solar Kit with Battery
  • Bolt Plus 920W Plug-In Solar Kit with Battery
  • Bolt Plus 920W Plug-In Solar Kit with Battery
  • Bolt Plus 920W Plug-In Solar Kit with Battery
  • Bolt Plus 920W Plug-In Solar Kit with Battery
  • Bolt Plus 920W Plug-In Solar Kit with Battery
  • Bolt Plus 920W Plug-In Solar Kit with Battery
  • Bolt Plus 920W Plug-In Solar Kit with Battery
  • Bolt Plus 920W Plug-In Solar Kit with Battery
  • Bolt Plus 920W Plug-In Solar Kit with Battery
  • Bolt Plus 920W Plug-In Solar Kit with Battery
  • Bolt Plus 920W Plug-In Solar Kit with Battery
  • Bolt Plus 920W Plug-In Solar Kit with Battery
  • Bolt Plus 920W Plug-In Solar Kit with Battery
  • Bolt Plus 920W Plug-In Solar Kit with Battery
  • Bolt Plus 920W Plug-In Solar Kit with Battery
  • Bolt Plus 920W Plug-In Solar Kit with Battery
  • Bolt Plus 920W Plug-In Solar Kit with Battery
  • Bolt Plus 920W Plug-In Solar Kit with Battery
  • Bolt Plus 920W Plug-In Solar Kit with Battery
  • Bolt Plus 920W Plug-In Solar Kit with Battery
  • Bolt Plus 920W Plug-In Solar Kit with Battery
  • Bolt Plus 920W Plug-In Solar Kit with Battery
  • Bolt Plus 920W Plug-In Solar Kit with Battery
  • Bolt Plus 920W Plug-In Solar Kit with Battery
  • Bolt Plus 920W Plug-In Solar Kit with Battery
  • Bolt Plus 920W Plug-In Solar Kit with Battery
  • Bolt Plus 920W Plug-In Solar Kit with Battery
  • Bolt Plus 920W Plug-In Solar Kit with Battery
  • Bolt Plus 920W Plug-In Solar Kit with Battery
  • Bolt Plus 920W Plug-In Solar Kit with Battery
  • Bolt Plus 920W Plug-In Solar Kit with Battery
  • Bolt Plus 920W Plug-In Solar Kit with Battery
  • Bolt Plus 920W Plug-In Solar Kit with Battery
  • Bolt Plus 920W Plug-In Solar Kit with Battery
  • Bolt Plus 920W Plug-In Solar Kit with Battery
  • Bolt Plus 920W Plug-In Solar Kit with Battery
  • Bolt Plus 920W Plug-In Solar Kit with Battery

Bolt Plus 920W Plug-In Solar Kit with Battery

Regular price £1,749.99
£1,749.99
Sale price
Regular price
Sale Sold out
Tax included. Shipping calculated at checkout.
Description

The Thunder Bolt Plus 920W combines a powerful two-panel plug-in solar system with 1.92 kWh of smart LiFePO4 battery storage for UK homes. Generate more solar during the day, store available energy for later and manage your system through the S-Miles Home app. Ideal for gardens, sheds and flat roofs.

Optional upgrades include adjustable mounting brackets, a 10m AC cable, battery mounting kit and professional installation.

AC Cable: 5m
Battery Mounting Set: No - I'll put the battery on the ground
Adjustable Panel Mounting Brackets: None

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Bolt Plus 920W Plug-In Solar Kit with Battery
Regular price £1,749.99
£1,749.99
Sale price
Regular price

Frequently asked questions

Bolt Plus 900W Plug-In Solar Kit with Battery - 2 Bolt Plus 900W Plug-In Solar Kit with Battery - 2

Yes. Bolt Plus 920W combines our higher-output two-panel Bolt system with 1.92 kWh of battery storage. It suits you if you want more solar and somewhere to store it.

Both systems include the same 1.92 kWh battery storage. Bolt Plus 460W uses a single solar panel, while Bolt Plus 920W uses two high-output panels for greater solar generation potential.

Bolt 920W is the solar-only system. Bolt Plus 920W adds 1.92 kWh of LiFePO4 battery storage, so you can use your solar after the sun goes down.

Bolt Plus 920W is built around 920W of combined solar capacity from two 460W rigid panels.

The included battery provides 1.92 kWh of LiFePO4 storage, enough to cover you when solar production is lower or grid electricity costs more.

Surplus solar goes into the battery for later, so more of the electricity you generate gets used at home.

Yes. The battery supports time-of-use charging, so it can charge on cheaper off-peak rates and discharge when prices are higher. Actual savings depend on your electricity tariff and household usage.

Solar panels reach their rated peak output only under ideal test conditions. Pairing 920W of solar panel capacity with an 800W microinverter helps achieve stronger output across a wider part of the day while keeping the system's maximum AC solar output at 800VA.

Yes. Each panel has its own microinverter input and MPPT, so the two panels are optimised separately.

Yes. The system works with the S-Miles Home app, so you can monitor solar production, battery status and system performance over Wi-Fi or Bluetooth.

The solar panels work particularly well in gardens and on suitable flat roofs, sheds, outbuildings and rear extension roofs. The battery should be positioned on a stable surface or suitable wall mount in accordance with the installation guidance and protected from direct sunlight and rainfall.

The solar panels and microinverter are straightforward to assemble, but the battery bundle requires a professional final AC connection. The installation should be completed in accordance with the supplied guidance and applicable UK electrical requirements.

Yes. A second compatible 1.92 kWh battery can be added to increase combined storage capacity to 3.84 kWh when configured correctly.

The LiFePO4 battery cells are rated for at least 6,000 cycles, and the battery comes with a 10-year manufacturer warranty.


What can Bolt Plus 920W power?

Bolt Plus 920W generates about 1,012 kWh in its first year at a 40° tilt facing south. The battery stores the midday surplus, so around 911 kWh of that is used in your home. That's enough to cover all of this:

The appliances below use about 902 kWh of the 911 kWh used at home each year
  • Fridge freezer

    Running 24/7

    365 days a year

    About 139 kWh

  • LED TV

    4 hours a day

    1,460 hours a year

    About 88 kWh

  • Washing machine

    4 washes a week

    208 washes a year

    About 146 kWh

  • Dishwasher

    3 cycles a week

    156 cycles a year

    About 156 kWh

  • Electric oven

    2 hours a week

    104 hours a year

    About 104 kWh

  • Laptop

    8 hours a day

    2,920 hours a year

    About 88 kWh

  • Kettle

    2 boils a day

    730 boils a year

    About 73 kWh

  • LED bulb

    5 hours a day

    1,825 hours a year

    About 16 kWh

  • Wi-Fi router

    Running 24/7

    365 days a year

    About 88 kWh

  • Phone

    1 charge a day

    365 charges a year

    About 5 kWh

Estimates based on typical UK appliance use and the year 1 figures in the financial projection on this page. Results depend on location, orientation, shading and your tariff.

20-year financial projection

  • 0.92 kWp

    System size

    2 x 465 W

  • 1,012 kWh

    Year 1 generation

    London estimate

  • £373

    Year 1 savings

    At 30p/kWh

  • £9,731

    20-year total savings

    At 30p/kWh

Year Elec. rate
(p/kWh)
Generation
(kWh)
Self-use
(kWh)
Self-use
savings (£)
Battery
arbitrage (£)
Annual
total (£)
Cumulative
(£)
1 30.00 1,012 911 £273 £100 £373 £373
2 30.90 1,008 907 £280 £103 £383 £757
3 31.83 1,004 903 £287 £106 £394 £1,150
4 32.78 1,000 900 £295 £109 £404 £1,555
5 33.77 996 896 £303 £113 £415 £1,970
6 34.78 992 892 £310 £116 £426 £2,396
7 35.82 988 889 £318 £120 £438 £2,834
8 36.90 984 885 £327 £123 £450 £3,284
9 38.00 980 882 £335 £127 £462 £3,746
10 39.14 976 878 £344 £131 £474 £4,221
11 40.32 972 875 £353 £135 £487 £4,708
12 41.53 969 871 £362 £139 £500 £5,208
13 42.77 965 868 £371 £143 £514 £5,722
14 44.06 961 864 £381 £147 £528 £6,250
15 45.38 957 861 £391 £151 £542 £6,792
16 46.74 953 857 £401 £156 £557 £7,349
17 48.14 949 854 £411 £161 £572 £7,921
18 49.59 946 851 £422 £166 £587 £8,508
19 51.07 942 847 £433 £170 £603 £9,111
20 52.61 938 844 £444 £176 £619 £9,731

System: 2 x Bolt 460W solar modules (N-type i-TOPCon monocrystalline, dual glass, 23.0% efficiency), total 0.92 kWp. Bolt 800 VA dual-MPPT microinverter, 96.7% peak efficiency, one module per MPPT input.

Orientation: Modelled at 40-degree tilt facing south, the optimal configuration for London and readily achieved with a ground, flat-roof or wall frame. Output will differ at other orientations.

Specific yield: 1,111 kWh/kWp/year (PVGIS simulation for London at 40-degree tilt, including cable, inverter and module losses, less a 2% soiling allowance and a further 2% for microinverter clipping, as 920 Wp of modules feed an 800 VA microinverter).

Year 1 generation: 1,012 kWh.

Module degradation: 1% in year 1, 0.4%/year thereafter, reaching 87.4% of rated output at year 30 (Bolt performance warranty).

Seasonal generation split: Winter 33% / Summer 67% (derived from PVGIS monthly output at 40-degree tilt for London).

Self-consumption rate: Winter 100% / Summer 85% (blended 90%). The battery stores midday summer surplus that would otherwise be unusable, raising on-site consumption well above an equivalent system without storage.

Annual consumption: 2,700 kWh (Ofgem typical medium household). Winter 60% / Summer 40%.

Electricity tariff: 30 p/kWh peak (smart time-of-use daytime rate), 8 p/kWh off-peak (overnight rate), 3% annual inflation.

Battery: 1.92 kWh usable capacity, LiFePO4 cells, AC-coupled, 87% round-trip efficiency, IP66, 6,000+ cycle life, 10-year warranty.

Battery arbitrage: Off-peak grid charging at overnight rates, peak discharge during the day. 180 winter days at full capacity (1.92 kWh) and 185 summer days at 50% capacity, as surplus solar charges part of the battery during summer daylight hours and that value is already counted in the self-consumption figure. Battery operates at 800 W maximum output, sufficient to offset household base load during peak hours. 87% round-trip efficiency.

Export: No export income is included in this projection.

Basis of calculation: Figures are modelled on a 920 W (2 x 460 W) system with a 1.92 kWh battery.

Battery arbitrage savings assume the customer is on a smart time-of-use tariff with off-peak overnight rates. Actual returns may be higher or lower than projected depending on tariff availability and usage patterns. All figures are estimates based on the assumptions above and should not be considered as guaranteed returns.


What our customers say

Good customer care

I bought a rigid pv panel, floor mount and Uk mains cable to micro inverter lead. All were delivered very quickly. Support from Hannah has been a stand-out part of the customer experience: helpful, responsive and no hard sales push.

E.T

Storm Plus 360W Solar Kit with Battery - Excelent Package System

The system is now installed and working well. At this stage it is largely a matter of fine-tuning the battery settings to suit the flat’s actual usage pattern.

D.

Hoymiles microinverter

Ordered a microinverter and delivered 2 days later. Amazing service. Easy to connect and set up after an account was set up for me. Amazing service from Hannah. Would highly recommend.

G.W

Hoymiles micro inverter

Supplied micro inverter. Arrived quickly. I had a few issues connecting it but Thunder were so helpful via WhatsApp - really went the extra mile to make sure I was happy - highly recommended company.

N.I

Got Storm 360W for our balcony and it…

Got Storm 360W for our balcony and it has worked brilliantly for us. Makes lots of sense to have this for us, as I’m WFH and has been a strong boost for energy saving for us.

J.

Amazing Sevice

I have a big, south facing garden but our dormer means that traditional solar panels aren’t cost effective. I came across Thunder who offered an greats alternative… they quickly arranged and installed a 1.07kWp system together all for under £1000! Highly recommend Thunder!

R.B

A young team who helped us

A young team who helped us with the whole process - thanks Matt!

D.N.M

Very happy with our storm kit

We installed Storm 360W on our balcony with some small adjustments and have been very happy with it. Its been fun to see how much we electricity produce everyday!

A.

Innovative and professional startup

I'm so glad to try Storm710W from this company. It significantly reduced my electricity costs, and the company was extremely helpful and professional. They're a successful, innovative startup that takes a very close interest in its customers.

R.Y

Good customer care

I bought a rigid pv panel, floor mount and Uk mains cable to micro inverter lead. All were delivered very quickly. Support from Hannah has been a stand-out part of the customer experience: helpful, responsive and no hard sales push.

E.T

Storm Plus 360W Solar Kit with Battery - Excelent Package System

The system is now installed and working well. At this stage it is largely a matter of fine-tuning the battery settings to suit the flat’s actual usage pattern.

D.

Hoymiles microinverter

Ordered a microinverter and delivered 2 days later. Amazing service. Easy to connect and set up after an account was set up for me. Amazing service from Hannah. Would highly recommend.

G.W

Hoymiles micro inverter

Supplied micro inverter. Arrived quickly. I had a few issues connecting it but Thunder were so helpful via WhatsApp - really went the extra mile to make sure I was happy - highly recommended company.

N.I

Got Storm 360W for our balcony and it…

Got Storm 360W for our balcony and it has worked brilliantly for us. Makes lots of sense to have this for us, as I’m WFH and has been a strong boost for energy saving for us.

J.

Amazing Sevice

I have a big, south facing garden but our dormer means that traditional solar panels aren’t cost effective. I came across Thunder who offered an greats alternative… they quickly arranged and installed a 1.07kWp system together all for under £1000! Highly recommend Thunder!

R.B

A young team who helped us

A young team who helped us with the whole process - thanks Matt!

D.N.M

Very happy with our storm kit

We installed Storm 360W on our balcony with some small adjustments and have been very happy with it. Its been fun to see how much we electricity produce everyday!

A.

Innovative and professional startup

I'm so glad to try Storm710W from this company. It significantly reduced my electricity costs, and the company was extremely helpful and professional. They're a successful, innovative startup that takes a very close interest in its customers.

R.Y

Good customer care

I bought a rigid pv panel, floor mount and Uk mains cable to micro inverter lead. All were delivered very quickly. Support from Hannah has been a stand-out part of the customer experience: helpful, responsive and no hard sales push.

E.T

Storm Plus 360W Solar Kit with Battery - Excelent Package System

The system is now installed and working well. At this stage it is largely a matter of fine-tuning the battery settings to suit the flat’s actual usage pattern.

D.

Hoymiles microinverter

Ordered a microinverter and delivered 2 days later. Amazing service. Easy to connect and set up after an account was set up for me. Amazing service from Hannah. Would highly recommend.

G.W

Hoymiles micro inverter

Supplied micro inverter. Arrived quickly. I had a few issues connecting it but Thunder were so helpful via WhatsApp - really went the extra mile to make sure I was happy - highly recommended company.

N.I

Got Storm 360W for our balcony and it…

Got Storm 360W for our balcony and it has worked brilliantly for us. Makes lots of sense to have this for us, as I’m WFH and has been a strong boost for energy saving for us.

J.

Amazing Sevice

I have a big, south facing garden but our dormer means that traditional solar panels aren’t cost effective. I came across Thunder who offered an greats alternative… they quickly arranged and installed a 1.07kWp system together all for under £1000! Highly recommend Thunder!

R.B

A young team who helped us

A young team who helped us with the whole process - thanks Matt!

D.N.M

Very happy with our storm kit

We installed Storm 360W on our balcony with some small adjustments and have been very happy with it. Its been fun to see how much we electricity produce everyday!

A.

Innovative and professional startup

I'm so glad to try Storm710W from this company. It significantly reduced my electricity costs, and the company was extremely helpful and professional. They're a successful, innovative startup that takes a very close interest in its customers.

R.Y

Good customer care

I bought a rigid pv panel, floor mount and Uk mains cable to micro inverter lead. All were delivered very quickly. Support from Hannah has been a stand-out part of the customer experience: helpful, responsive and no hard sales push.

E.T

Storm Plus 360W Solar Kit with Battery - Excelent Package System

The system is now installed and working well. At this stage it is largely a matter of fine-tuning the battery settings to suit the flat’s actual usage pattern.

D.

Hoymiles microinverter

Ordered a microinverter and delivered 2 days later. Amazing service. Easy to connect and set up after an account was set up for me. Amazing service from Hannah. Would highly recommend.

G.W

Hoymiles micro inverter

Supplied micro inverter. Arrived quickly. I had a few issues connecting it but Thunder were so helpful via WhatsApp - really went the extra mile to make sure I was happy - highly recommended company.

N.I

Got Storm 360W for our balcony and it…

Got Storm 360W for our balcony and it has worked brilliantly for us. Makes lots of sense to have this for us, as I’m WFH and has been a strong boost for energy saving for us.

J.

Amazing Sevice

I have a big, south facing garden but our dormer means that traditional solar panels aren’t cost effective. I came across Thunder who offered an greats alternative… they quickly arranged and installed a 1.07kWp system together all for under £1000! Highly recommend Thunder!

R.B

A young team who helped us

A young team who helped us with the whole process - thanks Matt!

D.N.M

Very happy with our storm kit

We installed Storm 360W on our balcony with some small adjustments and have been very happy with it. Its been fun to see how much we electricity produce everyday!

A.

Innovative and professional startup

I'm so glad to try Storm710W from this company. It significantly reduced my electricity costs, and the company was extremely helpful and professional. They're a successful, innovative startup that takes a very close interest in its customers.

R.Y

Good customer care

I bought a rigid pv panel, floor mount and Uk mains cable to micro inverter lead. All were delivered very quickly. Support from Hannah has been a stand-out part of the customer experience: helpful, responsive and no hard sales push.

E.T

Storm Plus 360W Solar Kit with Battery - Excelent Package System

The system is now installed and working well. At this stage it is largely a matter of fine-tuning the battery settings to suit the flat’s actual usage pattern.

D.

Hoymiles microinverter

Ordered a microinverter and delivered 2 days later. Amazing service. Easy to connect and set up after an account was set up for me. Amazing service from Hannah. Would highly recommend.

G.W

Hoymiles micro inverter

Supplied micro inverter. Arrived quickly. I had a few issues connecting it but Thunder were so helpful via WhatsApp - really went the extra mile to make sure I was happy - highly recommended company.

N.I

Got Storm 360W for our balcony and it…

Got Storm 360W for our balcony and it has worked brilliantly for us. Makes lots of sense to have this for us, as I’m WFH and has been a strong boost for energy saving for us.

J.

Amazing Sevice

I have a big, south facing garden but our dormer means that traditional solar panels aren’t cost effective. I came across Thunder who offered an greats alternative… they quickly arranged and installed a 1.07kWp system together all for under £1000! Highly recommend Thunder!

R.B

A young team who helped us

A young team who helped us with the whole process - thanks Matt!

D.N.M

Very happy with our storm kit

We installed Storm 360W on our balcony with some small adjustments and have been very happy with it. Its been fun to see how much we electricity produce everyday!

A.

Innovative and professional startup

I'm so glad to try Storm710W from this company. It significantly reduced my electricity costs, and the company was extremely helpful and professional. They're a successful, innovative startup that takes a very close interest in its customers.

R.Y

Good customer care

I bought a rigid pv panel, floor mount and Uk mains cable to micro inverter lead. All were delivered very quickly. Support from Hannah has been a stand-out part of the customer experience: helpful, responsive and no hard sales push.

E.T

Storm Plus 360W Solar Kit with Battery - Excelent Package System

The system is now installed and working well. At this stage it is largely a matter of fine-tuning the battery settings to suit the flat’s actual usage pattern.

D.

Hoymiles microinverter

Ordered a microinverter and delivered 2 days later. Amazing service. Easy to connect and set up after an account was set up for me. Amazing service from Hannah. Would highly recommend.

G.W

Hoymiles micro inverter

Supplied micro inverter. Arrived quickly. I had a few issues connecting it but Thunder were so helpful via WhatsApp - really went the extra mile to make sure I was happy - highly recommended company.

N.I

Got Storm 360W for our balcony and it…

Got Storm 360W for our balcony and it has worked brilliantly for us. Makes lots of sense to have this for us, as I’m WFH and has been a strong boost for energy saving for us.

J.

Amazing Sevice

I have a big, south facing garden but our dormer means that traditional solar panels aren’t cost effective. I came across Thunder who offered an greats alternative… they quickly arranged and installed a 1.07kWp system together all for under £1000! Highly recommend Thunder!

R.B

A young team who helped us

A young team who helped us with the whole process - thanks Matt!

D.N.M

Very happy with our storm kit

We installed Storm 360W on our balcony with some small adjustments and have been very happy with it. Its been fun to see how much we electricity produce everyday!

A.

Innovative and professional startup

I'm so glad to try Storm710W from this company. It significantly reduced my electricity costs, and the company was extremely helpful and professional. They're a successful, innovative startup that takes a very close interest in its customers.

R.Y

How much could you save?

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Step 1: Enter details

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Typically 26p to 32p per kWh

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Energy production

kWh / year

Potential savings

£ / year

Monthly production (kWh)

*Calculations are based on official solar radiation data from the European Commission's PVGIS database.

**Estimated production accounts for a 14% system loss and assumes a vertical panel angle (90° inclination).

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