AUTHORISED SPECIFIER & INSTALLER

Sigenergy Battery Systems

Sigenergy intelligent energy management that delivers exceptional performance with scalability

If you run solar, an EV or a heat pump, and spend £3,000 per year, or more, on electricity, the advanced SigenStor system by leading manufacturer Sigenergy is a revelation in future-proof energy management.

Together with bespoke system design and installation by OffGrid Pro, the SigenStor solution delivers highly optimised energy infrastructure for single-phase and three-phase UK homes or businesses. A cut above entry-level kits, SigenStor can dramatically improve the control, efficiency and resilience of your energy needs.

Sigenergy SigenStor
Sigenergy Qualified Installer

SigenStor, an all-in-one modular energy storage system

SigenStor by Sigenergy is designed to scale with your home, and adapt as your energy demand grows.

SigenStor battery systems provide:

  • Scalable battery storage
  • Hybrid inverter
  • Energy management system
  • Optional EV DC charger integration
  • Optional backup Gateway

A unique Sigenergy modular system that’s designed and deployed using scalable architecture. It’s flexible as well as investible.

OffGrid Pro is ready to design your Sigenergy System, when you are. SigenStor systems typically range from £8,000–£25,000+ depending on capacity, phase configuration and backup requirements. It’s the perfect system solution for customers who are serious about reducing energy costs and improving energy security.

Typical investment options:

£8,000 to £15,000 | A system designed for:


  • Solar PV System plus one EV
  • Moderate heat pump demands
  • Larger single-phase homes

£15,000 to £25,000+ | A system designed for:


  • Multiple EVs
  • Higher winter heat pump loads
  • Three-phase properties
  • Backup-enabled installations
  • Expansion-ready setups

A system that’s designed around your needs

Every SigenStor system is individually specified according to real consumption data, which is a bespoke service and not a generic, off-the-shelf package.

More capacity – higher energy density

A unique Sigenergy modular system that’s designed and deployed using scalable architecture. It’s flexible as well as investible.

OffGrid Pro is ready to design your Sigenergy System, when you are. SigenStor systems typically range from £8,000–£25,000+ depending on capacity, phase configuration and backup requirements. It’s the perfect system solution for customers who are serious about reducing energy costs and improving energy security.

Typical investment options:

£8,000 to £15,000 | A system designed for:


  • Solar PV System plus one EV
  • Moderate heat pump demands
  • Larger single-phase homes

£15,000 to £25,000+ | A system designed for:


  • Multiple EVs
  • Higher winter heat pump loads
  • Three-phase properties
  • Backup-enabled installations
  • Expansion-ready setups

A system that’s designed around your needs

Every SigenStor system is individually specified according to real consumption data, which is a bespoke service and not a generic, off-the-shelf package.

More capacity – higher energy density

Energy Security with the Optional Gateway

Energy prices are volatile. Grid outages are increasing. Electrification is accelerating.
SigenStor’s optional Gateway enables advanced backup capability.

With Gateway installed:

  • Automatic switchover during grid outage
  • Backup for essential circuits (or larger loads, subject to design)
  • Continued solar generation during outage
  • Stored battery power available when you need it most

For homes running heat pumps, EVs, refrigeration, security systems or home offices

This is no longer a luxury feature. It’s energy security. We design backup systems correctly – isolating circuits, managing load demand, and ensuring compliance.

Single-Phase & Three-Phase Specialists

Most UK homes are single-phase, and SigenStor handles high domestic loads – when designed properly. For larger properties, we also design and install three-phase compatible SigenStor systems.

Sigenergy battery systems ensure:

  • Balanced phase loading
  • Stable integration
  • Clean distribution board installation
  • Scalable capacity expansion

We design systems to work in winter – not just summer.

Is a SigenStor system a worthy investment?

At Offgrid Pro, we don’t just install Sigenergy systems, we design and integrate a complete solution that suits your exact requirements. As an authorised and specifier & installer, our expertise and partnership ensures your system is robust, efficient and ready to deliver full energy independence.

Your benefits include

  • Modular & Expandable: Add battery capacity as your usage increases
  • Smart Tariff Optimisation: Charge off-peak. Discharge during peak rates
  • EV Integration: Optimise EV charging within the same ecosystem
  • Solar Maximisation: Increase self-consumption and reduce cheap export
  • Backup Resilience: Optional Gateway provides protection when the grid fails Increase self-consumption and reduce cheap export.

If your level of spend is £3,000 each year you are likely to be exposed to the following energy inefficiencies:

Exposure to Peak Tariffs
Charging your EVs at suboptimal times
Exporting Solar below retail value
Increasing electric demand year-on-year

Battery storage isn’t about going off-grid. It’s about strategic energy control.

Book your Free Consultation today

Call us on 02382 250 135 to discuss your requirements and find out more. Alternatively, complete an online contact request to arrange an appointment at your convenience.

Ready to stop overpaying for your electricity?

Find out how much you could save with a bespoke battery storage system designed around your property. If you would prefer to speak to us on the phone call 02382 250 135.

Energy Independence Form

If you know how much energy you use, please feel free to add it here.

You’re one step closer to energy independence! Our team will be in touch soon to create a solution tailored to you.

Servicing and Maintenance

TECHNICIANS WITH KNOW-HOW

A Sigenergy system from OffGrid Pro is a cared-for system. We put everything into each installation, it’s natural we want it to perform with long-lasting dependability and reliability. But we can also service solar PV systems.

Our service and maintenance package makes sure each system delivers on every promise to its maximum potential.