Portugal Águeda
On/Off-Grid ESS.
500 kW / 1075 kWh · 600 kW PV
User-side on/off-grid solar-plus-storage for a 24-hour manufacturing facility — cutting peak tariffs and keeping production running through every grid event.
High energy costs,
zero tolerance for downtime.
A manufacturing facility in Águeda, Portugal employs around 300 people and runs 24 hours a day with an average load of roughly 150 kW. Electricity was one of its largest operating costs, and any interruption hit production directly.
The site already had a 200 kW PV plant, but system limitations kept it from fully consuming its own clean energy. Hua Power was asked to design a single solution that could integrate the existing PV, expand generation, cut peak tariff exposure, and keep the 24-hour line running through grid disturbances.
One integrated platform
for PV + ESS.
Hua Power delivered a 500 kW / 1075 kWh user-side on/off-grid energy storage system built around the HC1075S Battery ESS Split Cabinet. Through AC coupling, the existing 200 kW PV plant and a newly installed 400 kW array were unified into a single 600 kW "PV + ESS" structure.
The platform supports self-consumption, grid export, and off-grid backup from the same hardware — meeting the factory’s round-the-clock demand while keeping PV, MPPT, and transformer modules integrated in a split-cabinet footprint that reduces cost and install time.
Power
500 kW
Capacity
1075 kWh
PV Integrated
600 kW (200 + 400)
Avg Load
~150 kW
Product
HC1075S Split Cabinet
Location
Águeda, Portugal
Three modes, one continuous production line.
Daytime · Grid-Tied
PV powers the 150 kW average factory load first; surplus generation charges the 1075 kWh battery bank.
Peak / Evening
Battery discharges to offset peak tariffs and carries the 24-hour production line once PV output drops.
Grid Failure
STS + off-grid inverter auto-switch to battery within milliseconds; critical loads ride through without interruption.
From the Portuguese
coast.
Engineered for
24-Hour C&I Loads.
Dual On/Off-Grid Operation
Prioritizes PV self-consumption when grid-connected; automatically switches to off-grid mode during grid failure so 24-hour production never stops.
AC Coupling with Existing PV
Integrates the site’s existing 200 kW PV plant with a new 400 kW array into a unified 600 kW "PV + ESS" structure — no rework of the existing system.
Highly Integrated Split Cabinet
PV, MPPT, and transformer modules combined into a single split-cabinet platform — reducing cost, saving footprint, and shortening on-site installation time.
Self-Developed BMS + EMS
Hua Power’s in-house BMS and EMS optimize charge/discharge in real time: PV feeds load and charges by day, battery covers peak hours and nights.
100% Unbalanced Load Support
Handles fully unbalanced three-phase loads and flexible parallel expansion, keeping voltage stable under fluctuating industrial demand.
STS + Maintenance Bypass
Static Transfer Switch plus a maintenance bypass circuit keep critical production loads energized during grid events and servicing windows.
Commercial & Industrial
Energy Storage.
On/off-grid solar-plus-storage platforms for factories, logistics, and 24-hour operations. Explore our complete C&I energy storage portfolio.
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