When evaluating solar energy solutions, it is crucial to understand the three primary system architectures, as each carries different cost implications and operational benefits.

Grid-Tied (On-Grid) Systems: These systems are connected directly to the utility grid. They are the most cost-effective option as they do not require batteries. However, they do not provide power during grid outages, which is a significant drawback in regions with unstable electricity.
Off-Grid Systems: These systems are completely independent of the utility grid. They require a robust battery bank and often a backup generator to ensure 24/7 power availability. This independence comes at a significantly higher capital cost due to the batteries and larger solar array required.
Hybrid Systems: This architecture combines the best of both worlds. It is connected to the grid but also incorporates battery storage. It can store excess solar energy, use it during peak tariff times (peak shaving), and provide backup power during outages. While more expensive than a simple grid-tied system, it offers greater energy independence and resilience.

For this project, we selected a Hybrid Solar System to provide a reliable backup power solution for a client in Nigeria, where grid instability is frequent.
Product Cost Breakdown: Hybrid Solar System (12kW Sample)
The following table details the core component costs for a 10kW hybrid system designed for a small office. This is the Ex-Works (EXW) cost, representing the value of the goods at the factory gate in China.
N type bifacial solar panel 590W*24pcs, 2000USD;
Hybrid solar inverter 12kW*1pc, 2000USD;
Low voltage lithium battery 51.2V 200Ah*2pcs, 5000USD;
Roof mounting bracket*1set, 1500USD,
Total cost is 10500USD.

Logistics & Importation Costs
To get the system from the factory in Shanghai to the project site, additional costs for international freight and local import duties must be accounted for.

Sea Freight & Logistics
Incoterm: We calculated costs based on CIF (Cost, Insurance, and Freight) .

Destination Costs & Import Duties
Import regulations and tariffs vary significantly by country. For Nigeria, we have estimated the following costs based on current Harmonized System (HS) Codes for solar equipment.
HS Code Classification: Solar system and lithium batteries fall under different HS codes, attracting different duty rates.

Total Landed Cost Summary
The final step in the evaluation is to combine all costs to understand the total investment required to have the system ready for installation.

Key Conclusions
This cost evaluation for the project highlights critical factors in solar system budgeting:
Hardware Dominates: The solar equipment itself represents the largest cost (almost 80%).
Logistics are Manageable: International shipping adds a predictable but necessary cost layer (~4-5%).
Taxes are a Major Factor: Import duties and VAT can significantly increase the final project cost.
By conducting this detailed cost analysis, the client was able to secure accurate financing and set realistic expectations for the project’s return on investment (ROI).

Do you want to calculate the cost of  solar system based on your needs? Please don’t hesitate to contact us now.