25% cell efficiency, up to 177W extra from the rear side, and a 25-year performance warranty — the highest-output rigid panel Renogy makes, now in a ready-to-array 4-pack.
The Renogy 4 PCS N-Type Bifacial 590W Monocrystalline Solar Panel (SKU: RSP590DCT-144x4-US) is a four-panel set of large-format, high-efficiency bifacial solar modules purpose-built for off-grid homes, cabins, farms, ground-mount arrays, and serious RV or backup-power systems. Each panel pairs next-generation N-Type monocrystalline cells with a transparent backsheet bifacial design — capturing reflected and diffuse light from both sides — to deliver a combined rated output of 2,360W at STC, with meaningful real-world gains in bright, high-albedo environments. The 16-busbar (16BB) cell architecture reduces resistive losses, suppresses hot spots, and extends panel lifespan beyond what conventional PERC modules offer.
N-Type bifacial technology represents the current leading edge of mass-market solar. These four panels combine that technology with Renogy's proven rugged construction, delivering higher yield per square foot, better performance in heat and low light, and a warranty structure designed to give you confidence for decades.
At 25% cell efficiency and 22.8% module efficiency, these N-Type monocrystalline cells extract significantly more energy from the same roof or ground area compared to standard PERC modules — critical when installation space is limited.
With an 80% bifaciality factor, each panel can generate up to 177W of additional output from its rear side by capturing reflected and diffuse light. Ground-mount and roof installations over reflective surfaces see the largest gains.
N-Type cells lose very little output as temperatures rise. At -0.29%/°C, this panel outperforms conventional P-Type PERC panels (typically -0.35%/°C or worse) — a meaningful advantage for installations in hot climates or sun-baked rooftops.
Sixteen busbars per cell reduce electrical resistance, improve current collection, and create multiple redundant pathways so that micro-cracks or partial shading don't cascade into large output losses — boosting both efficiency and service life.
The IP68-rated junction box is fully sealed against dust ingress and prolonged water immersion. Combined with the black corrosion-resistant aluminum frame, the panel is built to withstand coastal, desert, and mountain environments without degrading.
Each panel is rated to withstand snow loads up to 5,400 Pa and wind loads up to 2,400 Pa — allowing safe deployment in high-wind and heavy-snowfall regions without additional structural concerns.
Conventional P-Type (PERC) solar panels use boron-doped silicon and are susceptible to a degradation mechanism called light-induced degradation (LID), which can reduce output in the first weeks of operation. N-Type monocrystalline cells — like those in this panel — use phosphorus-doped silicon that is inherently resistant to LID, meaning your rated output numbers hold up from day one. N-Type cells also age more gracefully over 25 years, which is why Renogy can back them with a more aggressive performance warranty curve (95% at year 5, 90% at year 10, 80% at year 25).
The bifacial rear side benefits most when panels are elevated above a reflective surface — light-colored gravel, concrete, sand, or snow — with clear airflow underneath. For ground-mount systems, a mounting height of at least 1 meter (approx. 42 inches) off the ground is generally recommended for meaningful bifacial gain. The transparent dual-glass-style backsheet allows diffuse sky light as well as ground-reflected irradiance to reach the rear cells throughout the day.
| Max Power at STC (Pmax) | 590W |
|---|---|
| Open Circuit Voltage (Voc) | 52.63V |
| Short Circuit Current (Isc) | 14.13A |
| Optimum Operating Voltage (Vmp) | 43.71V |
| Optimum Operating Current (Imp) | 13.50A |
| Maximum System Voltage | 1500VDC |
| Maximum Series Fuse Rating | 30A |
| Module Efficiency | 22.8% |
| Cell Efficiency | 25% |
| Temperature Coefficient (Pmax) | -0.29%/°C |
| Operating Temperature | -40°F to 185°F (-40°C to 85°C) |
| Total Rated Power (STC) | 2,360W (4 × 590W) |
|---|---|
| Max Bifacial Rear-Side Bonus (per panel) | Up to 177W additional (80% bifaciality factor) |
| Quantity in Kit | 4 panels |
| Cell Type | N-Type Monocrystalline (A+ Grade) |
|---|---|
| Busbar Design | 16BB (16 busbars) |
| Bifaciality Factor | 80% |
| Frame | Black corrosion-resistant aluminum |
| Front Glass | High-transparency tempered glass |
| Junction Box IP Rating | IP68 |
| Snow Load Rating | 5,400 Pa |
| Wind Load Rating | 2,400 Pa |
| Connector Type | MC4-compatible solar leads |
| SKU | RSP590DCT-144x4-US |
| Certifications | CE; Manufactured in ISO 9001-certified facility |
| Length | 89.7 in (2,278 mm) |
|---|---|
| Width | 44.6 in (1,134 mm) |
| Depth (frame) | 1.4 in (35 mm) |
| Weight | 58.4 lbs (26.5 kg) |
| Total Weight (4-pack) | 233.6 lbs (105.9 kg) |
Wiring all four panels in series produces a combined Voc of approximately 210.5V and a combined Vmp of approximately 174.8V — well above 150V inputs on many residential MPPT controllers. You will need an MPPT charge controller rated for at least 1500VDC input (matching the panels' maximum system voltage) and sized for your battery bank voltage and charging current. Many installers wire two pairs of panels in series, then connect the two strings in parallel (2S2P), resulting in a Voc of ~105V and Isc of ~28.3A — a configuration compatible with a wider range of 100A MPPT controllers. Always size your controller to the actual wiring configuration and battery voltage you intend to use.
Actual daily output depends on your location, tilt angle, shading, and local irradiance. As a rough rule of thumb, multiply the total array wattage (2,360W) by your average peak sun hours. In a location with 5 peak sun hours per day, you can expect approximately 9–12 kWh daily from the front side alone, with additional gain from bifacial rear-side capture in favorable mounting conditions. Renogy notes a single 590W panel can deliver up to 1,000Wh per day with 5–6 hours of sunlight.
P-Type PERC panels use boron-doped silicon and are susceptible to light-induced degradation (LID) that causes a small but permanent output drop in the first weeks of deployment. N-Type panels use phosphorus-doped silicon, which is inherently resistant to LID — so your rated output is maintained from day one. N-Type cells also have a lower temperature coefficient (-0.29%/°C vs. typically -0.35%/°C or more for PERC), meaning they hold their efficiency better on hot days. Over a 25-year lifespan, the cumulative energy advantage of N-Type is meaningful.
The panels use a standard pre-drilled aluminum frame and are compatible with most industry-standard racking systems (roof mount, ground mount, pole mount). For bifacial rear-side gain to be realized, the mounting system should not obstruct the backsheet — avoid solid opaque backing and ensure the panels are elevated enough above the surface below to allow light to reach the rear. Each panel's pre-drilled holes allow direct attachment to standard module clamps. Renogy also offers compatible 50-inch adjustable solar panel mount brackets.
Yes. The panels output standard DC power through MC4-compatible leads, making them compatible with the vast majority of MPPT and PWM charge controllers on the market. The 1500VDC maximum system voltage allows flexible series/parallel string design. They are designed to work within Renogy's broader ecosystem (charge controllers, inverters, batteries) as well as third-party components that accept standard MC4 connectors.
N-Type cells have improved tolerance to shade and diffuse light compared to conventional P-Type panels, and the 16-busbar design provides redundant current pathways that reduce the impact of localized shading or micro-cracks. For maximum shading resilience in an array where obstructions are common (trees, chimneys, roof edges), consider adding a module-level power optimizer or using Renogy's ShadowFlux anti-shading panels for those specific positions.
Each panel is rated for snow loads up to 5,400 Pa and wind loads up to 2,400 Pa. These ratings make them suitable for installation in regions with heavy snowfall and significant wind exposure, provided the racking system itself is also appropriately rated and installed to local structural codes. The bifacial design also actively sheds snow because reflected light can heat the rear surface, helping maintain output even in snowy conditions.
Renogy's tiered performance warranty guarantees that each panel will produce at least 95% of its rated output through year 5, at least 90% through year 10, and at least 80% through year 25. Separately, a 10-year material and workmanship warranty covers defects in manufacturing and materials. These warranties are backed by Renogy directly. TrueStead Supply sells authentic Renogy products with the full manufacturer warranty intact.
Yes. The 590W panel is also available in 2-panel sets (RSP590DCT-144x2-US) and individually, so you can purchase additional panels to expand your array. When expanding, ensure your charge controller, wiring, and overcurrent protection are sized for the total new string or parallel configuration. Panels of the same model and vintage are preferred for combining in series strings to avoid current mismatch.
