A20 · Generator Sub-Base Tank System

Integrated
fuel, DEF, and engine oil.

Modular storage in 8×20 and 8×40 ft ISO container footprint with UL 142 double-wall construction and optional UL 2085 fire ratings. Configurable 2 or 4 ft base height supports runtime requirements while integrating fuel receipt, polishing, and transfer.

Compare Models → Download Datasheets
ALL-IN-ONE CONTAINER / SUB-BASE TANK SUPPORT / EXPANDABLE CONTROLS
A20-Generator Sub-Base tank
FUEL SUPPLY ACTIVE | Generator 04 · 72% tank level

Choose Your Storage Configuration

Sized to the tank in front of you.

Earthsafe bulk fuel storage systems provide safe, reliable diesel storage for generators and other mission-critical equipment with integrated monitoring, controls, and fuel management options.

A20

1,000 to 18,000 Gallons

Earthsafe bulk storage tanks are engineered to provide long-term fuel storage with options for automatic fuel transfer, inventory monitoring, leak detection, and fuel polishing.

Approvals UL142, optional UL2085
Construction Steel tank
Best for Bulk fuel storage
Get the A20 data sheet →
Flow range
Family span · 0–300 GPM
A20 1,000 to 18,000 Gallons
0 75 150 225 300 GAL

Shared technology

More runtime. Same footprint.

01

Engineered tank systems

Designed specifically for standby generator fuel storage applications.

02

Integrated monitoring

Supports level monitoring, alarms, leak detection, and remote communications.

03

Expandable fuel management

Compatible with automatic transfer systems, polishers, and day tanks.

04

Factory built & tested

Complete systems are assembled and inspected prior to shipment.

Built around your generator

Container-scale capacity. Generator-scale integration.

01

Store fuel

Provides secure long-term storage for diesel fuel.

02

Monitor inventory

Continuously measures fuel level and system status.

03

Supply equipment

Transfers fuel to day tanks and generators as required.

04

Maintain readiness

Supports reliable standby power during utility outages.

Model comparison

The whole family, side by side.

Model Capacity Approvals Construction Best for
A20
1,000 to 18,000 Gallons
UL142, optional UL2085
Steel tank
Bulk fuel storage

UL142 construction · Integrated monitoring · Expandable controls · Factory tested · Custom engineered

Equipment & options

Configured for your install.

Bulk storage systems are customized for site layout, storage capacity, fuel management requirements, and applicable codes.

Download Spec Sheet Request a Quote
Standard equipment
Heavy-duty welded steel tank
Level monitoring provisions
Fill, vent, and drain connections
Inspection openings
Protective industrial coating
Lifting lugs and supports
Factory inspection and testing
Options
UL2085 protected tanks
Fuel polishing system
Automatic fuel transfer
Leak detection
Remote monitoring
Custom coatings and accessories

Talk to an engineer

Need more runtime from your generator system?

Tell us your required fuel capacity, generator load, and site conditions. Earthsafe engineers will recommend the best bulk storage solution for your project.

Request a Quote → Talk to Tech Support