Sigenergy Sigenstor Energy Controller 6.0 kW Single Phase
Sigenergy Sigenstor Energy Controller 6.0 kW Single Phase
Sigenergy Sigenstor Energy Controller 6.0 kW Single Phase
Sigenergy SigenStor Energy Controller, single phase — A 2.0 DC/AC ratio, 150 % off-grid peak and a stack that can also hold a DC EV charger.
A hybrid inverter does three jobs a string inverter cannot. It converts solar DC to AC; it charges and discharges a battery on the DC side, which avoids the double conversion an AC-coupled battery pays for; and when the grid fails it islands the house and keeps the backup output alive from the battery.
About the Sigenergy SigenStor Energy Controller, single phase
SigenStor is not a wall box with a battery beside it. It is a tower: the Energy Controller on top, one to six battery modules under it, and optionally a DC EV charger in the same stack — solar inverter, battery PCS, battery pack, EV DC charger and EMS in one product. This listing is the Energy Controller, the module that does the converting and the managing.
Two figures make it worth the money on a British roof. The DC/AC ratio goes to 2.0, so a 10 kWp array on a 5 kW controller is a supported design rather than a compromise, and winter output rises accordingly. And the off-grid peak is 150 % of rated power for ten seconds, which is what starts a pump or a compressor without stalling the system.
Which battery does this inverter take?
This inverter takes SigenStor BAT series.
This model has a battery voltage window of 300 – 600 V.
This rule applies to the SigenStor Energy Controller (all SP, TP and TPLV models).
1 to 6 modules per controller. Battery module voltage range 300 – 600 V on single phase and three phase low voltage; 600 – 900 V on the three phase controller.
What we stock that fits this inverter:
String design, battery limits and what is in the box
The details that decide whether this unit suits the job:
- Battery is the SigenStor BAT series, one to six modules per controller, 300 – 600 V on this single-phase platform. The three-phase controller uses 600 – 900 V instead, so the stacks are not interchangeable between them.
- MPP trackers rise with the model: two up to 6.0 kW, three on the 8.0 kW and four on the 10.0 and 12.0 kW, one string each at 16 A and 20 A short circuit.
- 600 V maximum DC, 350 V nominal, 100 V start-up and a 50 – 550 V MPPT window — a low window that suits short strings.
- DC/AC ratio up to 2.0: 10 kWp of PV on the 5.0 kW, 24 kWp on the 12.0 kW.
- The 0 ms backup figure is the load-side disruption time and it needs the Sigen Energy Gateway fitted alongside the Controller and the battery, with the Controller rated above the total house load. Without the Gateway there is still a backup output, but not a break-free one.
- Off-grid peak is 150 % of rated power for 10 seconds.
- 3.0 to 6.0 kW are 700 × 300 × 245 mm, 18 kg and convection cooled; 8.0 to 12.0 kW are 260 mm deep, 36 kg and fan cooled.
- Sigenergy's own footnote says the 8.0 to 12.0 kW single-phase models are only available in specific regions. We stock them — ask us to confirm availability and support for your installation.
- IP66, −30 °C to +60 °C, to 4,000 m, with WLAN, Ethernet, RS485 and the optional Sigen CommMod for cellular.
Where this hybrid earns its place
The SigenStor Energy Controller, single phase is specified most often for these jobs.
Things worth knowing about this listing
- The 0 ms backup figure is the load-side disruption time and it needs the Sigen Energy Gateway fitted with the controller and the battery, with the controller rated above the total house load. Without a gateway there is still a backup output, but not a break-free one.
Sigenergy 6.0 SP technical data
Ordered with this inverter more often than anything else
A hybrid is the middle of a system, not the whole of it. These are the parts our customers add most often:
Questions we get asked about this inverter
Is the backup really instantaneous?
It can be: Sigenergy quote 0 ms load-side disruption. That figure needs the Sigen Energy Gateway installed with the Controller and the battery, and the Controller rated above the total house load. Without the Gateway you still get a backup output, but not a seamless one.
Which battery does it take?
SigenStor BAT modules, one to six per controller, on a 300 – 600 V window. The three-phase controller runs 600 – 900 V, so a stack built for one will not suit the other.
How much solar can I connect?
Up to twice the controller's rated power — 10 kWp on the 5.0 kW, 24 kWp on the 12.0 kW — inside a 50 – 550 V MPPT window at 16 A per tracker.
Can I add an EV charger later?
Yes. SigenStor takes a DC EV charging module into the same stack, which is one of the reasons to choose the platform in the first place.
Is the 10 kW single phase available in the UK?
Sigenergy list the 8.0 to 12.0 kW single-phase controllers as available in specific regions only. We hold stock; ask us and we will confirm the position for your installation before you order.
Documents, advice and trade pricing
Every datasheet, certificate, installation manual and warranty document we hold for this product is in the Documents tab below. See the rest of our hybrid inverter range, our batteries and our solar panels, or email sales@clearraysolar.com if you would like us to check a battery pairing or a string design before you order.
Three figures govern it, all in the Technical Specifications: the MPPT voltage range, the maximum input voltage and the maximum DC power. Tell us which panel you're pairing it with and we'll confirm the string layout.
G98 covers installations up to 3.68kW per phase and is notified to your DNO after commissioning. Anything larger needs G99 approval agreed beforehand. We can flag which one your design falls under.
A hybrid inverter takes a DC-coupled battery directly. A standard string inverter needs an AC-coupled battery alongside it. The Technical Specifications show which type this unit is.
Yes, up to the maximum DC power figure in the specifications. Modest oversizing is normal practice - it lifts output in winter and at either end of the day, at the cost of brief clipping at midday peak.
An MPPT tracks the optimum operating point for a string of panels. You want one per roof orientation or pitch, because panels facing different directions on a single tracker drag each other down.
The standard manufacturer warranty is listed under the Warranty tab. Extended cover is available on most brands - see Warranty Extensions.
Build your complete solar system
Everything you need in one place.
- Inverters
- Batteries
- Mounting Systems
- Cabling & Accessories
- Protection Devices
Delivery times vary by region:
- UK — 1-2 business days
- Highlands & Islands — 1-2 business days
Returns accepted within 14 days of delivery for unused items in original packaging.
