Project Overview
We designed and installed a complete renewable energy system at a property in Whiteness, combining a east and west rooftop solar PV array, 18.08kWh Sigenergy battery storage, hybrid inverter technology, whole-home backup capability and a 7kW myenergi Zappi EV charger.
The system was designed to maximise renewable generation across the property's east and west-facing roof areas, store surplus electricity for later use and provide the homeowner with a flexible, future-ready energy system.
The completed installation incorporated 465W AIKO solar panels, a Sigenergy hybrid inverter, two 9.04kWh Sigenergy battery modules and associated gateway, metering, protection and monitoring equipment.
The Challenge
The property presented an excellent opportunity to utilise both sides of the roof, allowing the array to generate across a braoder portion of the day, rather than concentrating generation around midday.
The system also needed to store surplus solar generation for evening and overnight use, support electric vehicle charging, provide backup capability during grid interruptions. operate within the available network export limits and give the customer intelligent control and monitoring.
Our Solution
Following the survey and system design, we installed solar PV system comprising of AIKO 465W high efficiency panels across the east and west-facing roof areas.
The array was connected to a Sigenergy single-phase hybrid inverter, with export limit to 3.68kW to comply with the network requirements.
Two Sigenergy 9.04kWh battery modules provide 18.08kWh of installed battery storage, with approximately 17.52kWh usable capacity available for energy management and self-consumption.
System Specification
- AIKO 465W solar panels
- Sigenergy 6kW single-phase hybrid inverter
- 18.08kWh Sigenergy battery storage
- Approximately 17.52kWh usable battery capacity
- Sigenergy 100A Pro Gateway
- Whole-home backup capability
- 7kW myenergi Zappi EV charger
- Dedicated earthing arrangement for island-mode operation
- Generation meter
- AC and DC isolation and protection
- Full system monitoring and commissioning
East & West Solar PV Design
A key feature of this project is the use of both the east and west-facing roof elevations. Rather than concentrating all generation on one side of the property, the two-array design helps spread solar production across more of the day.
The original system modelling estimated annual generation at approximately 5,580kWh, with the combination of solar PV and battery storage predicted to achieve around 46.9% grid electricity independence, based on the consumption assumptions used during the design process.
Sigenergy Battery Storage
The substantial battery system allows electricity generated during periods of high solar production to be retained and used later rather than immediately exported.
This is particularly valuable for a large array where generation can exceed the property's immediate demand. The Sigenergy system intelligently manages solar PV generation, household demand, battery charging and discharging, grid import and export, time-of-use energy tariffs, backup operation and real-time system monitoring.
With 18.08kWh of battery storage, the customer has significant capacity to shift renewable energy from periods of generation into the evening and overnight.
Whole-Home Backup Capability
The Sigenergy Pro Gateway provides the infrastructure required for backup operation during a loss of grid power.
The system was designed with a dedicated earthing arrangement to allow safe island-mode operation, giving the customer additional resilience during network interruptions. The battery system is capable of island operation with a maximum output of 6kW, subject to available battery capacity and system demand.
Intergrated EV Charging
As part of the project,we also installed a 7kW myenergi Zappi EV charger. The EV charging application was approved through the ENA / SSEN Low Carbon Technology process before installation.
Integrating EV charging alongside solar and battery storage gives the homeowner the opportunity to make better use of renewable electricity produced on site while reducing reliance on public charging and imported grid electricity.
DNO & Electrical Compliance
We managed the design, network notification, installation, testing and commissioning process.
SSEN subsequently confirmed that the integrated solar PV and battery hybrid inverter installation met the requirements of the G98 notification process and updated its network records accordingly.
The electrical installation was also fully tested and certified in accordance with BS 7671 following completion.
Performance & Customer Benefits
The completed installation gives the customer a highly flexible renewable energy system capable of generating, storing and intelligently managing electricity throughout the day.
Key benefits include:
- Renewable solar generation
- 18.08kWh of battery storage
- Increased self-consumption of solar electricity
- Reduced reliance on grid imports
- Whole-home backup capability
- Integrated EV charging
- Smart monitoring and control
- East / west generation profile
- Export limitation compliant with network requirements
- Future-ready renewable energy infrastructure
Why This Project Stands Out
This project demonstrates the benefits of looking beyond a basic solar installation and designing the property as a complete energy system.
By combining a large east/west solar array with substantial battery storage, backup capability and EV charging, the homeowner can generate electricity throughout a greater portion of the day, store surplus energy and direct it towards the home or vehicle when it provides the greatest benefit.
It also demonstrates our ability to manage the complete project - from system design and DNO applications through to installation, electrical testing, commissioning and customer handover.
Whether you are looking for solar PV, battery storage, EV charging, backup power or a combination of technologies, our team can design a solution around your property and energy requirements.
We also ensure full compliance with current electrical standards and DNO requirements.
Get in touch to arrange a no-obligation consultation and find out how much you could save with solar and battery storage.
What our customers say
"Really nice, polite guys were the sparkies; they worked away quietly and left a tidy job at the end of each day. I’m recommending your business at every opportunity."
— Ruth, Sandwick
What our customers say
"I cannot praise the way your boys working highly enough, not a minute wasted. Not only is the standard of their work excellent but they also cleaned up after themselves at the end of each day in a way I’ve rarely experienced with other tradesfolk. Best wishes from one happy customer."
— Myra, LerwickWhat our customers say
"Just a wee note to thank you again for organising the electrical work on my house at such short notice. It is genuinely very much appreciated."
— James, Lerwick
