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Simple meaning
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A solar system connected to the electricity grid
that primarily reduces industrial electricity bills.
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A solar system designed to operate independently
from the electricity grid.
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A solar system combining solar panels, batteries,
and grid connectivity for savings and backup.
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Main components
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Solar panels, grid-tied inverter,
protection equipment, and grid connection.
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Solar panels, battery bank,
off-grid inverter, and backup equipment.
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Solar panels, hybrid inverter,
battery storage, protection equipment,
and grid connection.
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Grid connection
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Required
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Not required
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Available
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Battery
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Usually not required
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Required
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Required for backup operation
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When solar power is available
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Solar power supplies industrial loads.
Excess power may be exported to the grid,
depending on applicable regulations and approvals.
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Solar power supplies industrial loads
and charges the battery for later use.
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Solar power supplies industrial loads,
charges the battery, and may support
grid interaction based on system configuration.
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When solar power is insufficient
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Electricity is drawn from the grid.
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Electricity is supplied by the battery,
subject to available battery capacity.
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Electricity is supplied by the battery
or grid depending on load priority,
battery status, and system settings.
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During power cuts
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Usually stops supplying power during a grid outage
unless additional backup equipment is installed.
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Can continue supplying power,
subject to battery capacity and load demand.
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Can continue supplying selected or critical loads
when designed with suitable backup capacity.
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Excess solar power
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Can be exported to the grid,
subject to applicable net-metering or
commercial/industrial regulations.
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Stored in the battery,
subject to available storage capacity.
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Stored in the battery and may be exported
to the grid, depending on configuration
and applicable regulations.
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Best suited for
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Industries with reliable grid access,
high daytime electricity consumption,
manufacturing units, warehouses,
factories, and commercial-industrial facilities.
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Remote industrial facilities,
isolated sites, and locations with little
or no reliable grid connectivity.
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Industries requiring electricity savings
along with backup support for critical loads,
essential machinery, and operational continuity.
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Suitable operating pattern
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Best when industrial operations consume
significant power during daylight hours.
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Suitable when the facility must operate
independently and has sufficient battery capacity.
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Suitable when the facility needs solar savings
and backup support for selected critical operations.
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Key advantage
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Reduces electricity costs and supports
large daytime industrial energy consumption.
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Provides energy independence where grid power
is unavailable or unreliable.
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Combines electricity savings with backup support
for critical industrial operations.
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Key limitation
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Normally does not provide backup during
grid failure without additional equipment.
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Higher investment and battery capacity limits
may affect large industrial loads.
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Higher investment, battery replacement costs,
and additional system complexity.
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