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INSTAGROUP

InstaGen ONE 870W Plug-in Solar Kit (2 × 435W)

Stock status : Out of stock

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InstaGen ONE 870W two-panel plug-in solar kit

The InstaGen ONE 870W Plug-in Solar Kit (2 × 435W) is an 870W two-panel plug-in solar kit supplied by InstaGroup.

This kit combines two 435W bifacial TOPCon N-Type solar panels with an 800VA Hoymiles HF-800-WB HiFlow microinverter and an adjustable mounting system suitable for ground, wall or balcony installations.

Price including delivery:£599
View at Currys

ENA compliance

What’s included

Panels

  • 2 × 435W bifacial panels
  • 870W total panel capacity
  • Bifacial TOPCon N-Type
  • 22.3% module efficiency

Microinverter

  • Hoymiles HF-800-WB HiFlow
  • 800VA maximum AC output
  • 1 PV input channel
  • 1 independent MPPT

Mounting system

  • Suitable for ground, wall or balcony
  • Adjustable from 20° to 35°

AC & DC cables

  • 5m AC cable
  • DC cable length not specified by supplier

Warranty

  • 12 year microinverter warranty
  • 12 year solar panel warranty

Pros & cons

Pros

  • High-efficiency bifacial panels: The supplied bifacial TOPCon N-Type panels can generate from light reaching both their front and rear surfaces and deliver an excellent 22.3% module efficiency.
  • Flexible mounting options: The supplied mount supports ground, wall or balcony installation, with an adjustable tilt from 20° to 35° for greater flexibility when positioning the panels.
  • 12-year product warranty: Both the solar panels and microinverter are covered by a 12-year product warranty, longer than the 10-year warranties commonly offered with many other plug-in solar kits.

Cons

  • Panels are not independently managed: With a single MPPT, the microinverter has to manage both panels together, so one panel receiving less sunlight can hold back the performance of the pair. This makes the kit better suited to setups where both panels can face the same direction.
  • Not the cheapest two-panel option: At £599, the kit is competitively priced based on the current market, but lower-cost two-panel plug-in solar kits are available.

Detailed kit specification

The full known specifications for the solar panels and microinverter supplied with the InstaGen ONE 870W Plug-in Solar Kit (2 × 435W) are shown below.

Solar panels

Manufacturer
Not specified by supplier
Quantity
2 panels
Rated power
435W per panel (870W total)
Technology
Bifacial TOPCon N-Type
Dimensions
172 × 113 × 3cm per panel
Weight
25.1kg per panel
Module efficiency
22.3%
Year 1 degradation
1%
Annual degradation
0.4%
DC cable length
Not specified by supplier

Microinverter

Manufacturer
Hoymiles
Model
HF-800-WB HiFlow
Maximum output
800VA
PV input channels
1
Independent MPPTs
1
Weight
2.1kg
Peak efficiency
97%
Start-up voltage
22V
Connectivity
Wi-Fi, Bluetooth
AC cable length
5m

Where to buy

The InstaGen ONE 870W Plug-in Solar Kit (2 × 435W) is available to buy from Currys.

Major UK retailers

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

Other items you may need

This plug-in solar kit includes all of the main equipment needed to get set up, but depending on where and how you install it, there may be a couple of additional items worth considering.

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)

Estimate savings and payback

Estimated solar generation, annual savings and payback period for the InstaGen ONE 870W Plug-in Solar Kit (2 × 435W) 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 870W panel capacity and £599 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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Similar plug-in solar kits

The following kits have a similar panel capacity and spec to the InstaGen ONE 870W Plug-in Solar Kit (2 × 435W).

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