Atess Solar Charge Controller with ATESS PCS – PBD250/350

The ATESS PBD250 Solar Charge Controller, designed for large-scale solar installations in conjunction with ATESS Power Conversion Systems (PCS), is a robust DC-to-DC MPPT charge controller. Offering 250 kW rated capacity, five MPPT channels, a modular and transformerless design, and scalable architecture, it’s tailored for demanding environments such as off-grid, hybrid, or weak-grid regions like rural Tanzania. It ensures efficient solar integration, adaptable system growth, and helps provide reliable, clean power where grid supply is unstable or unavailable.

Features & Benefits

• Parallel Scalability: Enables seamless expansion to MW-scale systems by paralleling multiple units—ideal for growing solar farms or community energy systems in Tanzania.
• Five Independent MPPTs: Allows optimized harvesting from solar arrays with varying orientations or shading—especially useful in diverse topographies of Tanzanian landscapes.
• Modular, Transformerless Design: Compact footprint, reduced energy loss, and easier incremental deployment—supports phased rollouts in remote setups.
• High Conversion Efficiency (~99%): Maximizes energy yield from solar inputs—crucial for achieving ROI in high-sun areas like Tanzania.
• Robust Protection Suite: Safeguards include OV/UV, reverse polarity, short-circuit, overcurrent, overtemp, lightning—enhancing system reliability in harsh environments.
• Flexible Control & Connectivity: Touch-screen interface and RS485/CAN communications simplify setup and integration into Tanzanian microgrids or ESS.

Use Cases

• Off-Grid / Rural Electrification: Perfect for powering schools, clinics, or village microgrids beyond grid reach—with optional DG backup via ATESS PCS.
• Hybrid Systems in Weak-Grid Areas: Enhances energy resilience in regions with unreliable power; seamlessly integrates solar, storage, and backup sources.
• Large Commercial & Industrial Applications: Supports estates, factories, agricultural processing units—especially scalable as demand grows.
• Water Pumping & Agricultural Installations: Used in Malawi for water booster systems (e.g., 120 kW solar + 200 kWh storage)—applicable to similar projects in Tanzania.

Value Propositions

• Reliable Renewable Power: High efficiency and rugged protection reduce downtime and maintenance—a critical advantage for rural distribution.
• Scalable & Cost-Effective Growth: Facilities can start small and expand as needed—protecting capital and optimizing investment.
• Local Climate Resilience: Designed to withstand tropical heat and humidity, adaptable to altitude—suitable for diverse Tanzanian regions.
• Compatibility with Older Generators: Programmable modes and communications support integration with existing diesel or hybrid backup systems.
• Strong Safety Standards: Multiple international certifications reassure investors and project developers of compliance and reliability.

Local Market Positioning (Tanzania)

• Ideal for National Rural Electrification Goals: Projects under TANESCO or rural utility programs can leverage this controller in PV + storage setups.
• Commercial & Agribusiness Uptake: Tanzanian businesses—like agro-processing companies—can deploy modular solar systems using the PBD250 to cut energy costs.
• NGO & Development Projects: Suitable for donor-backed installations due to efficiency, reliability, and scalability.
• Competitive Edge: Compared to traditional inverter-based solutions, the PBD250 offers a streamlined, high-voltage, DC-coupled configuration that’s more efficient and easier to expand.

Technical Specifications