Five Acre Garden: Delivering an Off-Grid Solar & Battery Solution for a Community Garden Project

Five Acre Garden needed a dependable power supply to support the development of the site, but grid connection constraints meant electricity could not be provided in the short to medium term. The challenge was to: deliver reliable power without a grid connection; maximise the use of renewable generation on-site; ensure power availability during periods of low solar production; and create a robust and scalable off-grid system. A conventional solar-only installation would not have been sufficient, making battery storage and backup generation essential components of the solution.

• Supplying the AlphaESS G3-H50 / 120.5kWh battery system
• Supporting integration of solar, battery and generator technologies
• Providing technical guidance around off-grid operation
• Assisting with system configuration and commissioning support

Products

• AlphaESS G3-H50 / 120.5kWh battery system

Services

• Technical integration support
• Off-grid system guidance
• Battery specification support

The completed installation combines 30kWp of ground-mounted solar, battery storage and a backup generator into a fully integrated off-grid energy system. A key feature of the project is the G3-H50's standard off-grid operating mode, which allows the battery system to support standalone applications without requiring additional specialist equipment. The site's 30kWp solar array is DC-coupled directly into the battery, enabling renewable generation to be captured and stored for use throughout the day. A 20kW backup generator is also connected to the G3-H50, automatically supporting battery charging when solar generation is insufficient. This combination provides a reliable and flexible power source capable of supporting the site's ongoing development and operations.

• The project successfully delivered a complete off-grid solution where a traditional grid connection was not available
• Reliable power delivered without a grid connection
• 30kWp of solar generation integrated into the battery system
• Off-grid operation enabled through the G3-H50 platform
• Backup generator integrated for additional resilience
• Future-ready energy infrastructure supporting site growth

• This project demonstrates how battery storage can unlock renewable energy opportunities even where grid access is unavailable. By supporting Oakes Energy with battery supply and technical expertise, Immersa helped deliver a practical, resilient and sustainable energy solution for Five Acre Community Garden.
• It also highlights the flexibility of the AlphaESS G3-H50 platform, showcasing how modern battery systems can support fully off-grid applications without compromising reliability or performance.