Driven by the dual carbon goals, the global new energy industry is advancing at an unprecedented pace. As a core component of clean energy, photovoltaic power generation has seen its technological evolution and system upgrades become focal points of industry attention. In recent years, as large-scale utility-scale power plants and commercial/industrial distributed projects continue to expand, traditional 1500V PV systems have gradually reached efficiency and cost optimization bottlenecks. Against this backdrop, the 2000V PV system power solution has emerged, becoming a key force propelling the industry toward a new era of high efficiency, intelligence, and low cost.

I. Why 2000V? — From “Cost Reduction and Efficiency Enhancement” to “System Innovation”

      Current mainstream PV systems predominantly operate at the 1500V voltage level, achieving significant gains in power generation efficiency. However, facing intensifying market competition and mounting project investment pressures, the industry urgently requires further technological breakthroughs.

      By elevating the system voltage to 2000V, PV 2000V systems deliver multiple critical performance enhancements:

        1. Reduced line losses: Higher voltage at equal power output means lower current, significantly decreasing line losses (I²R), particularly beneficial for long-distance transmission.

        2. Reduced cable usage: Higher voltage allows for thinner cables, substantially saving copper costs and easing material procurement and installation challenges.

        3. Enhanced system efficiency: Lower current reduces component mismatch losses and inverter conversion losses, boosting overall system efficiency by 1.5%-3%.

        4. Simplified electrical design: Increased strings per string reduce the number of strings required, lowering demand for equipment like combiner boxes and DC switches while simplifying system topology.

II. Core Breakthrough: Full-chain Adaptive Power Solution

      A true “2000V system” transcends mere voltage elevation, encompassing holistic innovation across modules, inverters, combiner boxes, energy storage interfaces, and monitoring systems. Leading PV manufacturers have introduced comprehensive 2000V power solutions featuring these core advantages:

      — High-voltage-rated modules and connectors

      Utilizing novel encapsulation materials and insulation designs to ensure long-term stable operation in 2000V systems; dedicated high-voltage connectors certified by UL/IEC eliminate leakage and hot-spot risks.

      — High-power smart inverters

      Centralized and string inverters supporting 2000V DC input are being rolled out, with single-unit power exceeding 6MW. Their wide MPPT voltage range (800-2000V) ensures strong compatibility and adaptability to complex terrains.

      — Smart combiner boxes and safety protection

      Integrated smart combiner boxes enable remote monitoring and fault diagnosis, featuring built-in arc fault detection (AFCI) and rapid shutdown (RSD) functions to comprehensively enhance system safety.

      — Seamless Integration with Energy Storage Systems

      The 2000V system inherently matches high-voltage power conversion systems (PCS), achieving efficient photovoltaic-storage integration. This reduces AC/DC conversion losses and boosts overall energy utilization efficiency.

III. Extensive Application Scenarios with Outstanding Economics

The 2000V PV system is particularly suitable for the following scenarios:

      — Large-scale Ground-Mounted Power Plants: Projects exceeding 100 MW benefit significantly from long-distance transmission advantages, reducing Balance of System (BOS) costs by approximately 0.1-0.2 RMB/W.

      — Desert/Wasteland Base Projects: Demanding extreme system reliability in harsh environments; the 2000V solution reduces equipment nodes and enhances O&M convenience.

      — High-Irradiance Regions: Low-current operation in high-temperature environments minimizes temperature rise losses and boosts power generation.

      — County-Wide Distributed Deployment: Modular design flexibly adapts to diverse rooftop conditions, enabling large-scale implementation.

      Actual test data indicates that under equivalent conditions, the 2000V system reduces initial investment by 5%-8% compared to the 1500V system, lowers LCOE (Levelized Cost of Electricity) by approximately 4%-6%, and shortens the investment payback period by nearly half a year.

IV. Challenges and Outlook

      In the future, with the widespread adoption of high-efficiency technologies such as N-type cells and perovskite tandem modules, coupled with the deep integration of AI-driven operations and maintenance and digital twin technologies, the 2000V power supply solution for photovoltaic systems will become the cornerstone for building a “zero-carbon grid.” This advancement will propel the global energy structure toward greater efficiency, intelligence, and sustainability.