“The best supplier discussions make the boundary clear: what is in the equipment scope, what needs local engineering review, and who owns the final installation decisions.”
Commercial project lead
Installer coordination, North America
PV modules • Inverters • Energy storage • Project supply
Solar equipment sourcing for PV, inverters and energy storage
Rongkai coordinates solar equipment sourcing for distributors, EPC teams, and project buyers—aligning product models, documentation, packing, and delivery around the requirements you define.
PV + storage
Core equipment scope
By model
Model-led order review
RFQ → delivery
RFQ-to-delivery coordination
Equipment sourcing
Solar equipment, organized around the actual order
Start with the category you need, then align exact models, interfaces, requested files, packing, and delivery terms before the order is committed.
PV Modules
Module options for rooftop, commercial, and project procurement, reviewed against the required model and destination documentation.
Solar Inverters
String, hybrid, and off-grid inverter options selected around the intended system architecture and electrical requirements.
Energy Storage
LFP battery and storage-system options for defined backup, self-consumption, and hybrid power objectives.
Mounting & BOS
Racking interfaces, protection, cable, and balance-of-system items organized around the agreed supply scope.
System scenarios
Supply packages shaped by the operating scenario
Each scenario starts with the loads, operating objective, site constraints, and local engineering inputs—not a one-size-fits-all equipment ratio.
01
Residential Solar + Essential Backup
Rooftop solar and modular battery packages for homes and villas that need more self-consumption and a defined backup circuit.
Explore Solution02
Commercial Solar + Storage Hybrid
Solar, battery, and generator-compatible supply packages for processors, cold-chain operators, and facilities with variable loads.
Explore Solution03
Remote Microgrid + Hybrid Power
Solar-first, battery-backed packages for islands, guesthouses, remote facilities, and limited-grid sites that retain generator contingency.
Explore SolutionConfidential project cases
Confidential project supply cases
Client identities and detailed project records are limited; these cases show the equipment scope, operating context, and procurement decisions that can be shared.
Confidential Client Project
Commercial Rooftop Solar for a Local Warehouse — United States
A 75 kW rooftop procurement package built around clear documentation, practical installation sequencing, and commercial load alignment.
Pharmacy Solar + Storage Backup — Nigeria
A compact solar and battery package configured around refrigeration, lighting, point-of-sale, and essential outlet loads.
Solar Water Pumping for Smallholder Irrigation — Malawi
A direct solar pumping package designed around daytime irrigation and straightforward field maintenance.
Inside Rongkai Solar
See how solar equipment moves from product selection to project delivery
Featured supply brands
DeyeGreat PowerGrowattSolisTechfine
Supply coordination
Global service & delivery, tied to the order details
For multi-product and export orders, the useful work is in the details: exact model references, requested product files, packing logic, battery transport information, Incoterms®, and the delivery sequence agreed with the buyer.
DatasheetsModel-specific documentsBattery transport filesPacking information
RFQ → PO
Order review
Confirm the product model, quantity, scope boundary, and changes before the order is released.
By model
Document control
Organize requested data sheets, certificates, manuals, and transport files against the actual equipment list.
By shipment
Packing plan
Plan mixed loads, labels, and receiving sequence around the confirmed equipment scope.
Incoterms®
Delivery terms
Make the named place, transfer point, insurance, and document responsibilities clear before booking.
Destination-specific reviewMixed-container planningPhased deliveryIncoterms® 2020
Buyer guides & company updates
Procurement guidance for solar equipment buyers
Practical articles on choosing products, matching TOPCon, storage, and inverters, checking documents, and planning export orders.
Company News
Rongkai Solar launches buyer guides for solar and storage procurement
Our new guide library helps buyers prepare clearer RFQs, review documents, and plan delivery before an order is placed.
Blog
How to choose solar modules for distribution and project supply
Start with the site, the electrical design, and the document package—not a wattage number alone.
Blog
Hybrid, on-grid, or off-grid inverter: a buyer's selection guide
Choose the operating role first, then confirm the grid, load, PV, battery, and approval conditions.
Buyer perspectives
What solar equipment buyers value in a supply partner
Common buyer perspectives from international solar procurement, covering product selection, documents, packing, and delivery coordination.
“A useful quotation starts with the exact models. If the inverter, battery, and module references are clear from the beginning, our technical team can review the package quickly.”
EPC procurement lead
Commercial rooftop projects, West Africa
“When we buy modules, racking, cable, and protection in the same container, the packing plan matters as much as the unit prices. It affects how we receive and release the goods.”
Distribution buyer
Mixed-container inventory, Latin America
RFQ essentials
Questions to settle before you place an order
A complete RFQ lets the equipment, documents, packing, and delivery plan be reviewed together rather than as separate issues.
Read all buyer FAQsWhat should I include in a multi-product solar RFQ?
Include the destination, intended application, exact models or operating goals, quantities, requested documents, delivery target, and any packing or project-phasing constraints. If local engineering is involved, share the relevant design inputs too.
Can PV modules, inverters, and batteries be reviewed together?
Yes. A combined equipment list makes it easier to check interfaces, model references, and the order boundary. Final electrical design, local code compliance, and site-specific engineering should be confirmed by the responsible qualified party.
How should I check certificates and export documents?
Ask for files that identify the exact product model and revision, then compare them with the quotation and purchase order. Battery transport documents, packing information, and destination-specific requirements should be reviewed with the freight forwarder and local importer where applicable.
How do mixed loads and phased delivery need to be planned?
Agree the delivery sequence, receiving constraints, container mix, labels, battery handling, and Incoterms® before booking. The carrier, forwarder, and importer should confirm route-specific requirements and final responsibilities.
Send an RFQ with the details that affect the order
Share the product list or operating objective, destination, quantities, requested files, delivery timing, and any mixed-load or project-phasing requirements.