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THUNDER ENERGY

Thunder Energy Thunder Bolt 920W

Stock status : In stock

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Thunder Energy Thunder Bolt 920W plug-in solar kit

The Thunder Energy Thunder Bolt 920W is a 920W two-panel plug-in solar kit supplied by Thunder Energy.

This 920W kit combines two Trina Solar 460W solar panels with an 800VA Hoymiles HMS-800-2WB HiFlow Pro microinverter and a mounting system suitable for ground, wall or flat-roof installations. The mount angle adjustment has not been specified.

Price including delivery: £749.99
View at Thunder Energy

ENA compliance

Note: The flat-roof mounting configuration is approved under THUNE/21749/V1/A1; the angled-bracket configuration is approved under THUNE/21204/V1. When registering, use the reference matching the mounting configuration purchased.

Compliance

The Thunder Energy Thunder Bolt 920W was approved for plug-in solar use in Great Britain on and is listed as compliant in the Plug-in Solar category of the ENA Type Test Register under reference number THUNE/21204/V1.

View ENA record for this kit

Registration

If you buy this kit you must notify your Distribution Network Operator (DNO) by registering it at myplugin.solar within 28 days of installation. Use ENA reference number THUNE/21204/V1 when registering to find and select the correct approved kit.

Read our DNO registration guide

What’s included

Panels

  • 2 × 460W Trina Solar panels
  • 920W total panel capacity
  • i-TOPCon N-Type
  • 23% module efficiency

Microinverter

  • Hoymiles HMS-800-2WB HiFlow Pro
  • 800VA maximum AC output
  • 2 PV input channels
  • 2 independent MPPTs

Mounting system

  • Suitable for ground, wall or flat roof
  • Mount angle adjustment not specified by supplier

AC & DC cables

  • 5m AC cable
  • 4m DC cable

Warranty

  • 12 year microinverter warranty
  • 15 year panel warranty
  • 2 year mount warranty

Pros & cons

Pros

  • Panels can work independently: Two independent MPPTs allow the microinverter to manage each panel separately, so shading or a different orientation on one panel does not affect the performance of the other.
  • High-efficiency panels: The supplied Trina Solar panels deliver an excellent 23% module efficiency.
  • Generous cable lengths: The supplied 5m AC cable and 4m DC cables give you useful flexibility when positioning the panels and microinverter.

Cons

  • High price based on current market: At £749.99, similar-capacity two-panel kits with dual-MPPT microinverters are currently available for less.
  • Flat-roof mounting costs extra: The standard brackets are suitable for ground or wall mounting, but the flat-roof mounting option adds £69.98 to the price.

Detailed kit specification

The full known specifications for the solar panels and microinverter supplied with the Thunder Energy Thunder Bolt 920W are shown below.

Solar panels

Manufacturer
Trina Solar
Quantity
2 panels
Rated power
460W per panel (920W total)
Technology
i-TOPCon N-Type
Dimensions
176 × 113 × 3cm per panel
Weight
21kg per panel
Module efficiency
23%
Year 1 degradation
1%
Annual degradation
0.4%
DC cable length
4m

Microinverter

Manufacturer
Hoymiles
Model
HMS-800-2WB HiFlow Pro
Maximum output
800VA
PV input channels
2
Independent MPPTs
2
Weight
3.2kg
Peak efficiency
96.7%
Start-up voltage
22V
Connectivity
Wi-Fi, Bluetooth
AC cable length
5m

Before you buy

A few practical things to check before choosing where and how to install this kit.

Electrical safety

Before using this kit, check that the circuit supplying your socket has suitable RCD protection. Electrical Safety First recommends at least Type A bidirectional protection and advises upgrading Type AC protection before use

Read our safety guidance

Installation & planning

Each panel measures 176 × 113 cm and weighs 21 kg. The supplied AC cable is 5 m long. Check that your chosen location can support the panels, allows a suitable cable route and meets any applicable planning restrictions.

Read our planning guide

Ballast

If you’re installing the kit freestanding, you’ll need ballast to weigh down the mounting frame and help prevent movement or uplift. Follow the manufacturer’s instructions for the required ballast weight and positioning.

View ballast blocks at Wickes

Cable protection

If the AC cable runs through an exposed area, split conduit can provide additional protection. Because the plugs and connectors are moulded onto the cable, split conduit can be fitted around it without needing to remove them.

View split conduit on Amazon UK (paid link)

Where to buy

The Thunder Energy Thunder Bolt 920W is available to buy directly from Thunder Energy.

Direct from kit supplier

Prices and availability can change. Always confirm the complete kit specification and current price with the retailer before buying.

Estimate savings and payback

Estimated solar generation, annual savings and payback period for the Thunder Energy Thunder Bolt 920W depend on where you live, how the kit is positioned, and crucially, how much of the solar electricity your household uses.

Get a tailored estimate

We’ll pre-fill the calculator with this kit’s 920W panel capacity and £749.99 price. Just enter your postcode, panel setup and a few details about your household and electricity use to estimate generation, savings and payback.

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