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PatioSun Max
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PatioSun Max

ENA compliant PATIO/21261/V1/A1Unknown
Panels
2 × 445 W
Output
800 W
Cells
N-type TOPCon
Mount
Ground
Warranty
10 yrs panels

Last seen price

£749

Not in stock at any of 1 retailer
90-day low £749 (lowest now)

View at PatioSun ↗

PatioSun · · all prices

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Stock . We haven’t tested this kit ourselves; figures come from the maker, retailers, the ENA register and PVGIS. How we get our data.

How it ranks

Every stat compared with all the ENA-compliant kits on sale in the UK, recalculated for your home.

For Birmingham, south-facing on a garden stand (30°), medium daytime use.

Overall rank

#13 of 24

Of the 24 ENA-compliant kits with a UK price, this is the 13th best value for your setup, at 9.0p per kWh over 10 years.

Strong on

lost to the 800 W cap (1st)

Weak on

Nothing in the bottom quarter.

Value for money

  • Cost per kWh over 10 years

    Price ÷ the electricity it makes in 10 years. The fairest single measure of value; this is the overall rank.

    9.0p

    13pbest 4.9p
    Cost per kWh over 10 years: 9.0p; range 13p to 4.9p.

    13thof 24

  • Pays for itself in

    Years until bill savings cover the price.

    6.4 yrs

    7.5 yrsbest 3.7 yrs
    Pays for itself in: 6.4 yrs; range 7.5 yrs to 3.7 yrs.

    16thof 24

  • Saving a year

    Electricity used at home × your unit rate, plus any export payment.

    £118

    £89best £130
    Saving a year: £118; range £89 to £130.

    =9thof 24

  • Price

    Best in-stock price we found (last seen price if none in stock).

    £749

    £963.04best £336
    Price: £749; range £963.04 to £336.

    16thof 24

  • Price per watt of panel

    Price ÷ total panel power. Cheap watts only help up to the 800 W output cap.

    £0.84/W

    £1.26/Wbest £0.45/W
    Price per watt of panel: £0.84/W; range £1.26/W to £0.45/W.

    13thof 24

Output

  • Electricity a year

    PVGIS solar data for your location and direction, after shading and the 800 W output cap.

    853 kWh

    426 kWhbest 1181 kWh
    Electricity a year: 853 kWh; range 426 kWh to 1181 kWh.

    =9thof 24

  • Panel power

    Total rated panel power (DC). More panel power fills the 800 W cap for more of the day.

    890 Wp

    445 Wpbest 1260 Wp
    Panel power: 890 Wp; range 445 Wp to 1260 Wp.

    =9thof 24

  • Lost to the 800 W cap

    Share of the panels’ output above 800 W on bright days, which is wasted.

    0%

    2.2%best 0%
    Lost to the 800 W cap: 0%; range 2.2% to 0%.

    =1stof 24

  • Used in your home

    Share of the output your home uses as it’s made (the rest goes to the grid).

    55%

    44%best 83%
    Used in your home: 55%; range 44% to 83%.

    =13thof 24

Hardware

  • Panel efficiency

    From the panel datasheet. Higher means more power from the same area.

    Not published

    –

  • Inverter peak efficiency

    From the inverter datasheet.

    96.7%

    96.7%best 97%
    Inverter peak efficiency: 96.7%; range 96.7% to 97%.

    =9thof 22

  • Panel warranty

    Product warranty on the panels, from the maker.

    10 yrs

    10 yrsbest 30 yrs
    Panel warranty: 10 yrs; range 10 yrs to 30 yrs.

    =8thof 22

  • Inverter warranty

    Warranty on the microinverter, from the maker.

    10 yrs

    10 yrsbest 12 yrs
    Inverter warranty: 10 yrs; range 10 yrs to 12 yrs.

    =11thof 24

Availability

  • Retailers with it in stock

    UK retailers we track that have it in stock right now.

    0

    0best 0
    Retailers with it in stock: 0; range 0 to 0.

    =1stof 24

Each line shows every ranked kit as a dot, worst on the left and best on the right; this kit is the large yellow dot. “Not published” means the maker doesn’t state it, so it isn’t ranked. How we rank.

Where to buy

Stock and price at each retailer for PatioSun Max
RetailerPriceStockBuy
PatioSun
£749UnknownView PatioSun Max at PatioSun

What it would make for you

For Birmingham, south-facing on a garden stand (30°), no shading, medium daytime use.

Output
853 kWh/yr
Saving
£118 /yr
Pays back in
6.4 years
Cost per kWh
9.0p over 10 yrs
Used at homeSpare, sent to the grid
Monthly output for PatioSun Max
MonthkWh
Jan31
Feb44
Mar73
Apr96
May106
Jun106
Jul106
Aug95
Sep79
Oct54
Nov35
Dec27
  • About 55% used in your home at 25.33p/kWh (West Midlands price cap rate).

Full specifications

Panels

Panels
2 × 445 W
Total panel power (DC)
890 Wp
Panel model
Not published
Cell type
N-type TOPCon
Bifacial
Yes
Efficiency
Not published
Size (each)
Not published
Weight (each)
Not published

Inverter

Model
Hoymiles HiFlow Pro 800 (HMS-800-2WB)
Max output (AC)
800 W
MPPT inputs
2
Peak efficiency
96.7%
MPPT voltage range
16–60 V
Max input current (per input)
14 A
Weatherproofing
IP67
Monitoring
Wi-Fi + Bluetooth, S-Miles app
Inverter weight
3.2 kg

Installation

Mounting included
fold-out ground-mount stand (powder-coated steel, UK-made, pre-installed on panel)
Plug / connection
UK 3-pin plug with 5A fuse
Cable length
5 m
Assembly time (maker’s figure)
20 min

Warranty and compliance

Panel warranty
10 years
Panel performance warranty
25-year performance warranty (percentage not stated)
Inverter warranty
10 years
ENA register
PATIO/21261/V1/A1 (compliant)

Notes from our research: ENA ref PATIO/21261. Shopify tag says '870W' but the description says 2 x 445W (890W); description used. PatioSun does not publish the panel make/model or electrical specs (only '445W/465W bifacial N-type TOPCon'). Inverter model code inferred from Hoymiles' product naming (PatioSun only says 'Hoymiles HiFlow 800W'/'HiFlow PRO 800W'); Hoymiles itself offers a 12-year inverter warranty but PatioSun states 10 years. PatioSun says the shipped kit 'weighs ... 85kg+' in boilerplate used on every product (including the one-panel Lite), so totalWeightKg left null; Shopify shipping weights differ (Duo/Max 90kg, Lite 50kg, Max+ 60kg) and are not a published spec. Footprint ~1.8m x 1m x 1.2m per panel on its stand.

Sources for these specs (3)
  • patiosun.myshopify.com (retailer listing): panel count/watts/cell type/bifacial, inverter name, IP67, S-Miles monitoring, 5m lead, 5A plug, mounting, warranties, assembly time (Shopify .json body_html)
  • maplin.co.uk (retailer listing): HiFlow 800 Pro: 2 MPPT, 2x14A, 800VA, 96.7% peak
  • balkonstrom.com: HMS-800-2WB: MPPT 16-60V, 2x14A, 96.7% peak, IP67, 3.2kg

Good for: Gardens (based on the mounting included)

Every compliant kit, ranked

This kit is highlighted. Click any column to rank by it.

For Birmingham, south-facing on a garden stand (30°), medium daytime use.

RankKit
1City Plumbing DMEGC 1030W Hoymiles HiFlow KitCity PlumbingUnknown4.9p3.8 yrs£124985 kWh£468£0.45/W1030 Wp–10 yrs12 yrs
2City Plumbing DMEGC 930W Hoymiles HiFlow KitCity PlumbingUnknown5.1p3.7 yrs£120891 kWh£444£0.48/W930 Wp23.3%25 yrs12 yrs
3EcoFlow STREAM Adjustable Facade KitEcoFlowUnknown6.0p4 yrs£114766 kWh£449£0.56/W800 Wp––10 yrs
4City Plumbing DMEGC 515W Hoymiles HiFlow KitCity PlumbingUnknown7.2p3.7 yrs£96493 kWh£348£0.68/W515 Wp–10 yrs12 yrs
5City Plumbing DMEGC 525W Hoymiles HiFlow KitCity PlumbingUnknown7.3p3.8 yrs£97503 kWh£360£0.69/W525 Wp–10 yrs12 yrs
6EcoFlow STREAM Roof KitEcoFlowUnknown7.3p4.9 yrs£114766 kWh£549£0.69/W800 Wp––10 yrs
7City Plumbing DMEGC 475W Hoymiles HiFlow KitCity PlumbingUnknown7.6p3.7 yrs£92455 kWh£336£0.71/W475 Wp–10 yrs12 yrs
8City Plumbing DMEGC 465W Hoymiles HiFlow KitCity PlumbingUnknown7.7p3.7 yrs£91446 kWh£336£0.72/W465 Wp–10 yrs12 yrs
9UKSOL Pro Max 1260W Hybrid Mount KitUKSOLUnknown8.3p7.5 yrs£1301181 kWh£963.04£0.76/W1260 Wp23.3%10 yrs10 yrs
10PatioSun DuoPatioSunUnknown8.4p6 yrs£118853 kWh£699£0.79/W890 Wp–10 yrs10 yrs
11Perlight PowerPlug MAX 1000WPerlight SolarUnknown8.7p6.7 yrs£122957 kWh£810£0.81/W1000 Wp23.1%30 yrs12 yrs
12Thunder Bolt 920W Plug-In Solar KitThunder EnergyUnknown8.7p6.4 yrs£119881 kWh£749.99£0.82/W920 Wp23%25 yrs10 yrs
13PatioSun Max(this kit)PatioSunUnknown9.0p6.4 yrs£118853 kWh£749£0.84/W890 Wp–10 yrs10 yrs
14PatioSun Max+PatioSunUnknown9.0p6.6 yrs£119881 kWh£779£0.85/W920 Wp–10 yrs10 yrs
15UKSOL Pro Plus 1030W Hybrid Mount KitUKSOLUnknown9.0p7.2 yrs£124985 kWh£871.40£0.85/W1030 Wp23.2%10 yrs10 yrs
16Perlight PowerPlug MAX 930WPerlight SolarUnknown9.2p6.8 yrs£120891 kWh£798£0.86/W930 Wp23.2%30 yrs12 yrs
17UKSOL Pro Duo 890W Hybrid Mount KitUKSOLUnknown10p7.3 yrs£118853 kWh£849£0.95/W890 Wp22.3%10 yrs10 yrs
18UKSOL Pro Duo 890W Ground Mount KitUKSOLUnknown10p7.3 yrs£118853 kWh£849£0.95/W890 Wp22.3%10 yrs10 yrs
19PatioSun LitePatioSunUnknown11p5.1 yrs£89426 kWh£449£1.01/W445 Wp–10 yrs10 yrs
20UKSOL Pro Compact 515W Hybrid Mount KitUKSOLUnknown12p6.2 yrs£96493 kWh£583.39£1.13/W515 Wp23.2%10 yrs10 yrs
21UKSOL Pro Compact 460W Ground Mount KitUKSOLUnknown12p5.9 yrs£91441 kWh£529£1.15/W460 Wp–10 yrs10 yrs
22Perlight PowerPlug MAX 500WPerlight SolarUnknown13p6.4 yrs£94479 kWh£594£1.19/W500 Wp23.1%30 yrs12 yrs
23Thunder Bolt 460W Plug-In Solar KitThunder EnergyUnknown13p6.1 yrs£91441 kWh£549.98£1.20/W460 Wp23%25 yrs10 yrs
24Perlight PowerPlug MAX 465WPerlight SolarUnknown13p6.5 yrs£91446 kWh£588£1.26/W465 Wp23.2%30 yrs12 yrs

Only ENA-compliant kits with a UK price are ranked. Highlighted = best in each column. Click a column to rank by it; overall rank is cost per kWh over 10 years. “–” means the maker doesn’t publish it. How we rank.

Price and stock history

Lowest in-stock price over the last 1 daysStep chart of the cheapest in-stock price. Shaded areas are periods when no retailer we track had it in stock.£712£749£78629 Sept 2026now
Lowest in-stock priceOut of stock everywhere we track1 recorded change across 1 listing

What owners report

No owner reports yet. Own one? Share your numbers.

Questions

Is the PatioSun Max compliant in the UK?

Yes. PatioSun Max is listed as Compliant on the ENA type-test register (PATIO/21261/V1/A1), which the GB rules require for plug-in solar.

Where is the PatioSun Max in stock?

Not in stock at PatioSun for £749. We check 1 listing regularly; see the table for each retailer.

How much electricity does the PatioSun Max generate?

About 853 kWh a year facing south on a garden stand in Birmingham, from PVGIS data with the 800W output cap applied. Set your own postcode and direction for your figure.