A Guide to Stationary LNG Refueling Station Design, Components, and Capacity Planning

A stationary LNG refueling station is a fixed facility that stores liquefied natural gas and transfers it into vehicle tanks through a controlled fueling system. To plan one effectively, buyers need to define the vehicles and daily demand first, then match storage, pumps, dispensers, safety systems, and site layout to those requirements. The station’s capacity is not just its tank volume: usable inventory, delivery frequency, peak fueling demand, and operating schedule all matter. This guide explains the main design decisions and the information to prepare before discussing a project with a supplier.

View Details

Key Takeaways

• Start with vehicle types, expected fuel use, daily demand, and peak fueling periods.
• Size storage and transfer equipment around usable inventory, replenishment logistics, and required fueling throughput.
• Plan the full system, including unloading, storage, pumping, dispensing, controls, site layout, and safety provisions.
• Ask suppliers to document design assumptions, operating limits, interfaces, scope, and commissioning responsibilities.

Who This Guide Is For

This guide is intended for fleet operators, project developers, industrial buyers, engineering teams, and procurement professionals evaluating a fixed LNG fueling installation. It is useful whether the project is an initial station or an expansion, but it does not replace site-specific engineering or local code review. Final design depends on the fuel specification, local regulations, operating conditions, and the vehicles or equipment being served. Buyers should involve qualified engineering and safety professionals before selecting or installing equipment.

How a Stationary LNG Refueling Station Works

LNG arrives at the site in a delivery vehicle and is transferred through an unloading connection into insulated storage tanks. When a vehicle requires fuel, the station’s transfer equipment moves LNG from storage through the piping and dispensing system to the vehicle tank. Instrumentation and control systems monitor operating conditions and support the intended operating sequence. The exact arrangement varies with the station’s capacity, fueling method, site constraints, and project requirements.

Main Components to Include in the Design

LNG Storage and Unloading

The storage tank holds the site’s LNG inventory, while unloading equipment provides the connection and transfer path from the delivery vehicle. Tank selection should account for required usable inventory, delivery access, operating pressure, installation conditions, and the available footprint. Buyers should distinguish nominal tank volume from the quantity that can be practically used under the station’s operating conditions. The design should also consider how deliveries can be scheduled without disrupting fueling operations.

Pumps, Piping, and Dispensers

Pumps and associated piping provide the flow needed to fuel vehicles at the intended rate. Dispensers, hoses, connectors, and controls must be compatible with the vehicle interface and the planned fueling procedure. Equipment arrangement affects access for drivers and delivery vehicles, maintenance, and the movement of people around the fueling area. Ask the supplier to identify the system boundaries and clarify which interconnecting components are included in the proposed scope.

Controls, Instrumentation, and Safety Provisions

Controls and instruments support monitoring and operation of the station, including relevant pressure, temperature, and inventory indications. Safety provisions must be selected through project-specific hazard assessment and in accordance with applicable codes and authority requirements. These may include emergency shutdown functions, gas detection, fire protection, ventilation, signage, and controlled access, depending on the site and governing rules. Request a clear description of safety functions and their interfaces rather than relying on general statements that a station is “safe.”

Types and Design Options

Station layouts can be configured for different storage arrangements, fueling demand profiles, and site conditions. A compact installation may suit a constrained site, while a larger or modular arrangement may support future expansion or higher demand. The right option depends on delivery access, space, the number of vehicles served, the required fueling window, and the project’s expansion plan. Materials and equipment selections should be confirmed against LNG service conditions and the applicable design requirements.

Capacity Planning: A Practical Framework

Capacity planning starts with demand, not with selecting the largest available tank. Gather expected vehicles per day, typical fuel required per vehicle, peak arrival patterns, operating hours, and the delivery schedule. Then use those inputs to estimate daily consumption, required transfer throughput, and the inventory buffer needed between deliveries. A supplier can help translate the operating profile into a proposed equipment configuration, but the assumptions should remain visible and reviewable.

Dongzhao Product Page

Step 1: Estimate Daily Fuel Demand

Calculate demand using the number of vehicles served and their expected LNG consumption. For an illustrative planning case, 20 vehicles per day using an assumed 100 kg per vehicle would require 2,000 kg per day. This is a calculation example, not a recommended consumption rate or a claim about any particular fleet. Replace both assumptions with operating data from the intended vehicles and route conditions.

Step 2: Match Throughput to the Fueling Window

Daily demand does not show whether the station can handle peak arrivals. If the illustrative 2,000 kg daily requirement must be dispensed within a 10-hour operating window, the average required throughput during that window is 200 kg per hour. Actual equipment selection also needs to account for arrival clustering, fueling sequence, breaks, and any periods when equipment is unavailable. Ask the supplier to state the throughput basis and operating assumptions used in its proposal.

Step 3: Determine Storage and Replenishment Needs

Storage planning should account for usable inventory, delivery lead time, delivery vehicle access, and the consequences of a delayed replenishment. If a project uses an illustrative 2,000 kg per day and wants an inventory buffer equivalent to 2 days of that demand, the planning target would be 4,000 kg of usable fuel before allowing for design-specific limitations. This is a simple planning calculation, not a tank sizing recommendation. The final storage arrangement requires engineering review of usable capacity, operating conditions, reserve policy, and delivery logistics.

Buyer Selection Framework

Pricing, Lead Time, and Supplier Evaluation

Station cost and delivery schedule depend on configuration, capacity, site conditions, customization, equipment scope, and applicable compliance requirements. A quotation should therefore be compared on a like-for-like basis, not only by headline price. Confirm what is included for engineering, equipment, documentation, installation support, testing, commissioning, spare parts, and training. Lead time should be requested against a defined scope and should identify any buyer approvals, site readiness, or third-party items that affect the schedule.

Supplier Checklist

• Can the supplier explain the assumptions behind its capacity and equipment selection?
• Does the proposal identify system boundaries, interfaces, exclusions, and required site utilities?
• Are equipment data, operating limits, and relevant project documentation clearly specified?
• Does the supplier explain its approach to installation coordination, commissioning, and operator support?
• Can the proposed layout be reviewed against the site plan, delivery route, and local requirements?

Common Planning Mistakes to Avoid

A frequent mistake is sizing storage from average daily use while overlooking clustered demand or delivery interruptions. Another is choosing equipment before confirming vehicle interfaces, fueling procedures, and the intended operating window. Buyers may also underestimate the space needed for unloading, maintenance, and safe vehicle circulation. To reduce these risks, document the demand profile and site constraints early, and ask suppliers to show how each assumption affects the proposed design.

Working With Dongzhao

At Dongzhao, we support B2B discussions for stationary LNG refueling station projects by reviewing the intended application, capacity targets, equipment scope, and site requirements with the buyer. A useful initial inquiry includes the expected number of vehicles, estimated fuel demand, operating hours, delivery approach, location, and any known regulatory or layout constraints. These details help establish whether the requested configuration is aligned with the project and what information is still needed for evaluation. Final design and compliance decisions should be confirmed with the project’s qualified engineering team and relevant local authorities.

Conclusion and Next Steps

A well-planned stationary LNG refueling station matches storage, transfer, dispensing, controls, and site layout to a documented operating profile. Begin by calculating demand and peak throughput, then define delivery logistics, usable inventory requirements, site constraints, and the scope expected from the supplier. Treat illustrative calculations as planning tools rather than final equipment specifications, and validate all assumptions through project engineering. To start a supplier discussion with Dongzhao, prepare your demand estimate, vehicle information, site plan, operating schedule, and preferred project scope.