Sigenergy inverters · Norfolk & Suffolk
One-phase and three-phase solar control, properly designed.
Compare the Sigen Energy Controller range for homes, larger properties and commercial supplies — with solar, battery control, monitoring and backup options considered as one coordinated system.
3–30 kW rangeSigen Energy Controller
Choose the electrical platform before choosing the model.
Sigenergy’s controller combines solar inverter functions with intelligent energy management and compatible high-voltage battery control. The correct unit depends on your supply, array layout, export limit, loads, DNO position and whether backup is required.
Single phase
For most UK homes and smaller premises with a single-phase electrical supply. Nine output sizes allow closer matching to the property and agreed grid connection.
Three phase
For larger homes, farms, schools and commercial properties with a three-phase supply. Supports unbalanced three-phase output and up to four MPPT trackers.
Single-phase size chart
Sigen Energy Controller: 1 phase
Nine rated outputs from 3.0 kW to 12.0 kW. Extra MPPT trackers on the larger units can help where roof faces or shading create separate solar strings.
| Model | Rated AC output | Max PV input | MPPTs | 10-second backup peak* |
|---|---|---|---|---|
| EC 3.0 SP | 3.0 kW | 6,000 W | 2 | 4.5 kW |
| EC 3.6 SP | 3.68 kW | 7,360 W | 2 | 5.52 kW |
| EC 4.0 SP | 4.0 kW | 8,000 W | 2 | 6.0 kW |
| EC 4.6 SP | 4.6 kW | 9,200 W | 2 | 6.9 kW |
| EC 5.0 SP | 5.0 kW | 10,000 W | 2 | 7.5 kW |
| EC 6.0 SP | 6.0 kW | 12,000 W | 2 | 9.0 kW |
| EC 8.0 SP | 8.0 kW | 16,000 W | 3 | 12.0 kW |
| EC 10.0 SP | 10.0 kW | 20,000 W | 4 | 15.0 kW |
| EC 12.0 SP | 12.0 kW | 24,000 W | 4 | 15.0 kW |
Three-phase size chart
Sigen Energy Controller: 3 phase
Ten rated outputs from 5.0 kW to 30.0 kW for three-phase supplies, with larger PV input capacities and up to four independent MPPT trackers.
| Model | Rated AC output | Max PV input | MPPTs | 10-second backup peak* |
|---|---|---|---|---|
| EC 5.0 TP | 5.0 kW | 8,000 W | 2 | 7.5 kW |
| EC 6.0 TP | 6.0 kW | 9,600 W | 2 | 9.0 kW |
| EC 8.0 TP | 8.0 kW | 12,800 W | 2 | 12.0 kW |
| EC 10.0 TP | 10.0 kW | 16,000 W | 3 | 15.0 kW |
| EC 12.0 TP | 12.0 kW | 19,200 W | 3 | 18.0 kW |
| EC 15.0 TP | 15.0 kW | 24,000 W | 3 | 22.5 kW |
| EC 17.0 TP | 17.0 kW | 27,200 W | 3 | 25.5 kW |
| EC 20.0 TP | 20.0 kW | 32,000 W | 4 | 30.0 kW |
| EC 25.0 TP | 25.0 kW | 40,000 W | 4 | 30.0 kW |
| EC 30.0 TP | 30.0 kW | 48,000 W | 4 | 36.0 kW |
Key benefits
Designed as a connected energy system.
Intelligent energy control
An integrated EMS coordinates compatible solar, batteries and monitored energy flows rather than treating them as isolated products.
Flexible roof design
Two to four MPPT trackers help designers separate roof orientations and different string conditions on suitable arrays.
High PV allowance
Manufacturer-rated PV input capacity allows considered DC oversizing where the array and connection design support it.
Modular storage
Compatible SigenStor battery stacks can use one to six modules per controller, sized around consumption and power requirements.
Backup options
With the specified controller, battery and Energy Gateway, suitable properties can be designed for monitored backup operation.
Weather and safety
IP66 protection plus model-dependent electrical protection features support a professionally specified installation.
Which phase is right?
Match the inverter to the property—not just the panel total.
Mr Solar checks the electrical supply, demand profile and network constraints before recommending a controller.
Single-phase is commonly suited to
- Typical homes and small premises
- Single-phase incoming electrical supplies
- Arrays requiring up to four MPPT trackers
- Solar and battery designs from 3 to 12 kW
Three-phase is commonly suited to
- Larger homes, farms and commercial buildings
- Three-phase supplies and larger electrical loads
- Projects with heat pumps, workshops or high demand
- Solar and battery designs from 5 to 30 kW
Sigenergy battery storage
Add storage now—or design for the next stage.
The inverter is only one part of the system. Explore SigenStor battery modules, the Energy Gateway, backup options, smart monitoring and compatible EV charging on our dedicated Sigenergy battery page.
Explore Sigenergy batteriesFrequently asked questions
Before choosing a model
Can I fit a three-phase inverter to a house?
Only where the property has a suitable three-phase supply and the network connection and design support it. Many UK homes remain single phase.
Does a larger inverter always mean more generation?
No. Roof area, orientation, shading, module layout, export restrictions and the agreed grid connection all affect the practical design.
Can Sigenergy provide backup during a power cut?
Backup needs compatible controller, battery, gateway and circuit design. Sigenergy specifies 0 ms load-side disruption under its stated system conditions; this is checked project by project.
Can batteries be added later?
Often yes, when the original design, model and electrical arrangements allow it. Planning expansion at survey stage avoids avoidable redesign.
Technical figures sourced from the current Sigenergy Energy Controller datasheet. Exact products and specifications are checked again at quotation.
Request a design survey
Tell us about your property.
Include whether the supply is single or three phase, your approximate annual electricity use, roof details and whether battery storage or backup is required.