Inverters

SMA Sunny Island 6.0/8.0H

£ 3,340.8GBP · price may vary

Model: SI-8.0H-13
Specifications: 3

PhasesSingle phase
Weight (kg)65
On Grid / Off GridOn Grid, Off Grid

Overview

The Sunny Island 6.0H / 8.0H supports a wide range of on-grid and off-grid applications Powerful inverters with rated power outputs of 6kW or 8kW for 30 min. which can be stacked in clusters for higher power levels in both single phase and three phase networks and support a wide range of on-grid and off-grid applications. Systems up to 300kW are possible. Features: Compatible with many well-known brands of lithium-ion battery and all lead-acid batteries Includes integrated Ethernet interface (Wi-Fi no longer included to meet EU cyber security rules) Allows set-up using laptop or Smart device (phone or tablet) IP54 protection to allow outdoor installation if required High efficiency (>95%) Low standby & idle consumption (25W/4W) Operating temperature range of -25 to +60 deg C OptiCool system ensures high power in high temperatures by cooling the encapsulated transformer but keeping air ventilation away from coated circuit boards & electronics to ensure high protection for humid or salty atmospheres Includes two free programmable relays per unit to enable load shedding or other use and timers to enable daily, weekly, or monthly functions Up to 3 units can be stacked in a single phase cluster Up to 36 inverters can be used in a Multicluster system when combined with MultiCluster Boxes Warranty 5 years or 10 years with registration via the information sheet provided Temperature sensor required for each Master inverter used with lead acid batteries. Compliance with PSTI standard (2023 No. 1007) In order to ensure compliance, Wi-Fi is no longer included. If your device does include Wi-Fi it should be switched off permanently during commissioning and ethernet LAN used for communication.

Specifications

Phases	Single phase
Weight (kg)	65
On Grid / Off Grid	On Grid, Off Grid

How to read this datasheet

SMA Sunny Island 6.0/8.0H is listed with 3 published specifications from SMA, including phases of Single phase, weight (kg) of 65 and on grid / off grid of On Grid, Off Grid. Those figures are what decide whether this unit fits your system, so read them against the equipment it will connect to before comparing price.

For an inverter, the figures that matter most are topology — on-grid, off-grid, hybrid or micro, continuous AC output in kW, which caps the load you can run at once, surge or peak rating, which covers the brief inrush of motors and compressors and maximum PV input and the number of MPPT trackers, which set how many panel strings you can connect. It is the component that decides what a solar system can do: how much power you can draw at once, whether you can export to the grid, whether the system keeps running in a blackout, and how well the panels and battery are managed day to day.

Before you buy an inverter

The checks below apply to any inverter. Run them against the specification table above — most disappointing solar purchases are compatible-on-paper units that fail one of these in practice.

Confirm the inverter is approved by your local utility or distribution network before you buy if you intend to export power — grid connection depends on certified anti-islanding and local grid-code compliance, not on the inverter's specifications alone.
Match the battery communication protocol (CAN bus or RS485) between inverter and battery. Compatible voltages are not enough; without a supported protocol the battery management system and inverter cannot agree on charge limits.
Look at the warranty term and what it covers. Five years is the common baseline, ten is offered by stronger brands, and extensions are often cheaper bought with the unit than later.
Size the inverter against the loads you need to run simultaneously, not against the total wattage of every appliance in the building — a 5 kW inverter comfortably runs a fridge, fans, lights and a couple of ACs, but not all of them plus a water pump starting at the same time.

What people get wrong

Overlooking the IP rating. An outdoor installation needs at least IP65; indoor-rated units mounted outside fail early.
Buying on peak-watt price alone. A cheap inverter with a narrow MPPT window forces awkward string layouts and can strand a portion of the array.
Ignoring the ambient temperature rating. Inverters derate in heat, so a unit rated 5 kW at 25 °C may deliver noticeably less on a hot roof-adjacent wall at 45 °C.

Price and availability

SMA Sunny Island 6.0/8.0H is listed at £ 3,341 (GBP). Solar pricing moves with supply, import duties and exchange rates, and distributors set their own margins, so treat this as a comparison reference and confirm the current figure before you order.

SolarBazaar compares equipment rather than selling it. Shortlist here on specification and price, then buy from an authorised distributor or installer in your country: warranty cover on solar hardware is normally honoured through the channel you bought from, so confirm who supports SMA locally before ordering.

SMA Sunny Island 6.0/8.0H — frequently asked questions

How much does SMA Sunny Island 6.0/8.0H cost?

SMA Sunny Island 6.0/8.0H is listed at £ 3,341 (GBP). The figure is indicative — solar prices move with supply, duties and exchange rates, and each distributor sets its own margin — so confirm the current price with a supplier before ordering.

What are the specifications of SMA Sunny Island 6.0/8.0H?

We hold 3 published specifications for this inverter, including phases Single phase, weight (kg) 65 and on grid / off grid On Grid, Off Grid. The full table is on this page, listed under model SI-8.0H-13.

Who makes SMA Sunny Island 6.0/8.0H?

SMA Sunny Island 6.0/8.0H is a SMA product, listed under inverters with model reference SI-8.0H-13. The SMA brand page lists the rest of its range so you can compare across the catalogue.

Is SMA Sunny Island 6.0/8.0H right for my system?

That depends on what it has to connect to. For an inverter, check topology — on-grid, off-grid, hybrid or micro, continuous AC output in kW, which caps the load you can run at once and surge or peak rating, which covers the brief inrush of motors and compressors against the rest of your equipment before price enters the decision. Choose a hybrid inverter if a battery is in your plan now or later; retrofitting storage onto a pure grid-tie inverter usually means buying a second unit or an AC-coupled battery system.

Where can I buy SMA Sunny Island 6.0/8.0H?

SolarBazaar lists and compares equipment rather than selling it. Use the specifications and price here to shortlist, then buy through an authorised distributor or installer — buying in-channel is what keeps the manufacturer's warranty valid.

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