Inverters

SMA Sunny Tripower 125

£ 4,666.91GBP · price may vary

Model: STP-125-70
Specifications: 7

MPPT Trackers12
PhasesThree phase
ConnectionSunclix (solar), Connector (AC)
Full Pallet Quantity3
Warranty5
View all 7 specifications ↓

Overview

The Sunny Tripower 125 is the ideal inverter for decentralized system structures in the commercial sector up to the megawatt range. With an output of 125 kilowatts and 12 MPP trackers, it enables highly efficient and economical PV systems both on open spaces and complex roof systems. Installers and system operators benefit from easy integration thanks to SMA’s tried-and-tested inverter communication system. With communication via SMA Speedwire and Modbus, Sunny Tripower 125 facilitates easy integration of SMA commercial storage systems and charging infrastructure. SMA ShadeFix maximizes system performance even when some modules are located in shaded areas. The automatic integrated monitoring service SMA Smart Connected detects faults early on and thus helps to maximize yields. The integrated arc-fault circuit interrupter SMA ArcFix helps to make the PV system even safer. For large rooftop and ground-mounted systems up to the MW range 12 MPP trackers 24 strings with 1100 VDC Sunclix connector 125 kW for standard 400 VAC 3-phase grid connection Fast commissioning without additional DC combiners Peak efficiency of 98.4% Premium monitoring service for reliable system performance Maximum yields thanks to the integrated software solution SMA ShadeFix

Specifications

MPPT Trackers	12
Phases	Three phase
Connection	Sunclix (solar), Connector (AC)
Full Pallet Quantity	3
Warranty	5
IP Rating	IP65
On Grid / Off Grid	On Grid

Reading the specifications

SMA Sunny Tripower 125 is listed with 7 published specifications from SMA, including MPPT trackers of 12, phases of Three phase, connection of Sunclix (solar), Connector (AC) and full pallet quantity of 3. 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 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, maximum PV input and the number of MPPT trackers, which set how many panel strings you can connect and the MPPT voltage window, which decides how many panels go in a string. 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.

Choosing an inverter: the checks that matter

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.

Check the surge rating if you run motors — deep-well pumps, compressors and older air conditioners can draw two to three times their running current for a few seconds at start-up.
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.
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.

What people get wrong

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.
Assuming any grid-tie inverter keeps the lights on during an outage. Standard on-grid units shut down for safety unless they have a dedicated backup or islanding output.

Price and availability

SMA Sunny Tripower 125 is listed at £ 4,667 (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 Tripower 125 — frequently asked questions

How much does SMA Sunny Tripower 125 cost?

SMA Sunny Tripower 125 is listed at £ 4,667 (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 Tripower 125?

We hold 7 published specifications for this inverter, including MPPT trackers 12, phases Three phase, connection Sunclix (solar), Connector (AC), full pallet quantity 3 and warranty 5. The full table is on this page, listed under model STP-125-70.

Who makes SMA Sunny Tripower 125?

SMA Sunny Tripower 125 is a SMA product, listed under inverters with model reference STP-125-70. The SMA brand page lists the rest of its range so you can compare across the catalogue.

Is SMA Sunny Tripower 125 right for my system?

That depends on what it has to connect to. For an inverter, check 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 against the rest of your equipment before price enters the decision. 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.

Where can I buy SMA Sunny Tripower 125?

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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