PV + storage + PCS
PV modules, C&I or container ESS and grid-forming PCS sized as one standalone power system.
Solution
Off-Grid & Weak-Grid
Standalone PV-plus-storage power for sites with no grid or an unreliable grid, with optional grid-forming control.
The challenge
Power where the grid can’t deliver
Remote sites, islanded operations and weak-grid locations need stable, lower-cost power without depending on an unreliable or absent grid.
- No grid connection — or one so unstable that production and equipment are at risk.
- Diesel-only supply is expensive, polluting and exposed to fuel logistics.
- A standalone system has to form its own stable AC grid and run day and night.
How it works
How an off-grid system works
PV covers daytime load and charges the battery; grid-forming storage runs the site through the night.
- 01
PV generation
A PV array sized for daytime load and battery charging is the primary energy source.
- 02
Grid-forming PCS
The PCS forms a stable AC grid (voltage and frequency) for the whole site, with optional genset support.
- 03
Battery storage
Surplus PV is stored in LFP batteries to carry the site through the night and cloudy periods.
- 04
24/7 supply
Loads run on solar by day and stored energy by night — stable, lower-cost, independent power.
Outcomes
System specifications
Grid-forming stable off-grid AC supply
24/7 day-and-night operation
8,000+ battery cycles
Product specifications are indicative for the Hithium 261 kWh C&I storage class. Project outcomes such as payback, self-consumption and demand-charge reduction depend on your site load profile, tariff and system sizing, and are confirmed in the project quote.
Sunket Supply scope
What Sunket Supply supplies
Indoor / secure layout
Battery layouts for harsh or insecure sites — including theft-proof indoor installation.
Project support
Off-grid system design, genset integration where needed, commissioning and after-sales.
FAQ
Frequently asked
Can the system run fully off-grid?
Yes. Grid-forming PCS create a stable AC grid for the site, with PV and battery as the energy source and an optional genset for backup.
Does it work on a weak or unstable grid?
Yes. PV-plus-storage with grid-forming PCS can stabilise supply on weak or unstable grids and shift load to cheaper clean energy.
Can batteries be installed securely on remote sites?
Yes. Battery clusters can be installed indoors to protect them from theft and weather on remote or insecure sites.
Request a project-specific quote
Share your site profile and Sunket Supply returns a tailored quote from European stock — typically within 1–2 business days.