The Renogy 320W N-Type Monocrystalline Solar Panel 4-Pack delivers 25% cell efficiency, 22.2% module efficiency, and a 25-year linear power output warranty — all in a frame that is 13.5% smaller and 17.2% lighter than traditional 320W panels.
The Renogy 4-Pack 320W N-Type Monocrystalline Solar Panel (SKU: RSP320DC-BKx4-US) is a high-output rigid panel kit delivering 1,280 watts of combined solar capacity for residential rooftops, RV installations, off-grid cabins, tiny homes, and commercial arrays. Each panel harnesses advanced N-Type cell technology with 18 busbars (18BB) to achieve up to 25% cell efficiency — outperforming conventional P-Type PERC designs in high-heat environments, partial shading, and long-term output stability. The result is a cleaner, more space-efficient installation: four of these panels replace a twelve-panel 100W array while covering less roof area and requiring fewer wiring connections.
From the busbar count to the frame coating, every element of these panels is optimized for maximum long-term output in demanding real-world conditions.
N-Type monocrystalline cells achieve up to 25% cell efficiency — meaning a greater proportion of the sunlight hitting each panel is converted into usable electricity, compared to conventional P-Type or PERC designs.
18 busbars dramatically shorten the path electrons travel across each cell, minimizing resistive losses, reducing the likelihood of hot spots in harsh weather, and improving both energy harvest and cell longevity over the panel's lifespan.
At 64.6 × 34.7 × 1.4 in per panel, the RSP320DC is 13.5% smaller and 17.2% lighter than traditional 320W panels — a meaningful advantage on tight RV rooftops, cabin structures, and commercial array builds where roof area is finite.
Renogy guarantees at least 95% output at year 5, 90% at year 10, and 80% at year 25. That graduated guarantee means you can confidently size and plan your system around long-term energy production targets — not just day-one output.
The IP68-rated junction box and IP67-rated MC4 connectors protect against dust, debris, and sustained water immersion. The corrosion-resistant aluminum frame handles snow loads up to 5,400 Pa and sustained wind pressure up to 2,400 Pa.
With four panels combined at 1,280W, your array can generate approximately 6,400 Wh (6.4 kWh) per day based on 5 hours of peak sunlight — enough to meaningfully offset or eliminate electricity consumption for a cabin, tiny home, or off-grid workshop.*
Conventional P-Type solar panels lose output as temperatures rise — a real-world problem on sun-baked RV rooftops and summer rooftop installations. N-Type cells are inherently less susceptible to light-induced degradation (LID) and exhibit a lower temperature coefficient, which means they maintain a higher proportion of their rated output during the hottest parts of the day. The 18-busbar cell architecture further distributes current collection across a wider grid, reducing localized heating and sustaining stable power delivery across a wider range of operating conditions.
Each panel arrives with eight pre-drilled mounting holes on the back frame — compatible with Renogy Z Brackets, Corner Brackets, Pole Mounts, and Tilt Mounts (available separately from Renogy). Panels come with pre-attached MC4 leads (male and female connectors) for straightforward series or parallel wiring into your charge controller. The compact footprint means four of these panels occupy significantly less roof area than a comparable twelve-panel 100W array, reducing mounting hardware requirements and simplifying wire runs.
| Maximum Power at STC | 320W |
|---|---|
| Cell Type | N-Type Monocrystalline, 18 Busbars (18BB) |
| Cell Efficiency | Up to 25% |
| Module Efficiency | 22.2% |
| Open Circuit Voltage (Voc) | 43.82V |
| Optimum Operating Voltage (Vmp) | 37.85V |
| Short Circuit Current (Isc) | 8.92A |
| Optimum Operating Current (Imp) | 8.46A |
| Maximum Series Fuse Rating | 20A |
| Maximum System Voltage | 1,000V DC |
| Operating Temperature | -40°F to 185°F / -40°C to 85°C |
| Connectors | MC4 (male + female, IP67 rated) |
| Junction Box IP Rating | IP68 (1m depth, 1 hour) |
| EL Testing | 100% EL tested — no microcracks |
| Total Rated Power | 1,280W (4 × 320W) |
|---|---|
| Estimated Daily Output | ~6,400 Wh/day (based on 5 peak sun hours)* |
| Total Weight (4 panels) | ~131.6 lbs (4 × 32.9 lbs) / ~59.6 kg |
| SKU | RSP320DC-BKx4-US |
*Daily output estimate based on 1,280W array × 5 peak sun hours. Actual production varies by location, angle, temperature, shading, and system losses.
| Panel Dimensions | 64.6 × 34.7 × 1.4 in (1,640 × 880 × 35 mm) |
|---|---|
| Panel Weight | 32.9 lbs (14.9 kg) |
| Front Glass | Low-iron tempered glass |
| Frame Material | Corrosion-resistant anodized aluminum (black) |
| Snow Load Rating | 5,400 Pa (~550 kg/m² or ~1.5 m of snow) |
| Wind Load Rating | 2,400 Pa |
| Mounting Holes | 8 pre-drilled holes per panel |
The four panels combined deliver a rated 1,280W (4 × 320W) under Standard Test Conditions. Based on approximately 5 peak sun hours per day, this array can generate around 6,400 Wh (6.4 kWh) per day — enough to make a meaningful contribution to a cabin, tiny home, or off-grid workshop energy budget. Actual output varies by location, season, panel angle, shading, and system losses.
The answer depends on how you wire the panels and your battery voltage. In a simple parallel 12V configuration, four panels at ~8.92A Isc each would produce ~35.7A of combined short-circuit current, requiring a charge controller rated for at least 40A. Wiring in series raises the voltage proportionally and reduces current. For 1,280W arrays, Renogy recommends using an MPPT charge controller, which extracts more power from the panel's voltage curve than a PWM controller — particularly important at this power level. Renogy's Rover series MPPT controllers are commonly paired with this panel family.
The N-Type RSP320DC represents a meaningful technology upgrade over the older P-Type PERC RNG-320D. Key differences: cell efficiency rises from ≥22% to up to 25%; module efficiency improves from 19.2% to 22.2%; panel weight drops from 39.7 lbs to 32.9 lbs; overall dimensions shrink by 13.5%; Voc changes from ~40.3V to 43.82V (important for charge controller sizing); and the material & workmanship warranty extends from 5 years to 10 years. The N-Type design also reduces susceptibility to light-induced degradation (LID) and performs better at elevated temperatures.
Mounting hardware is not included. Each panel has 8 pre-drilled holes in the rear frame and is compatible with Renogy Z Brackets, Corner Brackets, Flat Roof Tilt Mounts, and Pole Mounts — all available separately from Renogy. You will also need a charge controller, adapter kit, and tray cables to complete the system. None of these are included in this 4-pack.
Yes. The RSP320DC is compatible with on-grid, off-grid, and hybrid solar system configurations. For on-grid and hybrid applications, Renogy recommends working with a licensed solar installer familiar with grid-tie equipment and local electrical codes, as grid-connected systems involve additional regulatory and safety requirements beyond the scope of panel installation alone.
Renogy recommends that panels wired in the same series string have the same Open Circuit Voltage (Voc). If you mix panels with different Voc values, the lower-voltage panel(s) can limit total string output. If you do mix brands or models, ensure the Voc values match as closely as possible. For optimal performance and simplicity, Renogy recommends using identical panels within a single string.
Solar panel hardware purchased for a qualifying residential solar installation may be eligible for the federal Residential Clean Energy Credit (ITC), which currently allows you to claim up to 30% of qualifying system costs. Tax incentive eligibility depends on your specific installation scenario, property type, and tax situation. Consult a qualified tax professional or visit the U.S. Department of Energy's website for current guidance before claiming any credit.
No. Per Renogy's policy, solar panels rated above 250W must ship via LTL (less-than-truckload) freight and do not qualify for standard free shipping. Shipping charges will be calculated and displayed at checkout based on your delivery address. Deliveries to Alaska and Hawaii may incur additional surcharges.
The Renogy RSP320DC includes a 10-year material and workmanship warranty covering manufacturing defects, plus a 25-year linear power output warranty guaranteeing at least 95% of rated output at year 5, 90% at year 10, and 80% at year 25. This linear structure means Renogy guarantees a predictable, gradually declining minimum performance curve — not a sudden drop — giving you confidence in long-term energy production planning.
