--- title: "REC RZMP-145-T Solar Panel: Specs & Datasheet | ComparePV" description: "REC RZMP-145-T solar panel. Specs: 14.50% efficiency, Polycrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/rec-rzmp-145-t" image: "https://comparepv.com/og/panel/rec-rzmp-145-t.png" updated: 2026-09-11 --- # REC RZMP-145-T Middle of its segment, heavy for its output 350 panels in the 45-245 W band, all technologies ## Identity - **Manufacturer:** REC - **Model:** RZMP-145-T - **Series:** RZMP PV Modules - **Rated power:** 145 W - **Cell technology:** Polycrystalline ## How it compares Compared against 45-245 W band, all technologies (350 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 145 W | 172 W | Typical | | | Module efficiency | 14.50% | 16.01% | Weak - bottom 17% | 14,007 | | Power density | 144.8 | 159.9 | Weak - bottom 19% | 13,989 | | Temperature coefficient | -0.400 | -0.370 | Weak - bottom 10% | 13,798 | | Weight (kg) | 14.6 kg | 11.5 kg | Weak - bottom 9% | | | Performance warranty | 25 yrs | 25 yrs | Typical | 9,912 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 14.50% | 16.01% | Weak - bottom 17% | 14,007 | | Power density | 144.8 | 159.9 | Weak - bottom 19% | 13,989 | | Temperature coefficient | -0.400 | -0.370 | Weak - bottom 10% | 13,798 | | Weight per kWp | 100.7 | 70.0 | Weak - bottom 9% | 14,045 | | Performance warranty | 25 yrs | 25 yrs | Typical | 9,912 | ### Watch out for - **100.7 kg per kWp** - Bottom 9% of the 45-245 W band, against a median of 70.0. Ranked 14,045th in the whole database. - **-0.400 %/°C temperature coefficient** - Bottom 10% of the 45-245 W band, against a median of -0.370. - **14.50% module efficiency** - Bottom 17% of the 45-245 W band, against a median of 16.01%. - **Best for:** Residential and commercial. - **Not ideal for:** Weight-limited structures, hot climates and tight roof space. ## Specification ### Electrical - **Rated power (Pmax):** 145 W - **Efficiency:** 14.50 % - **Voltage at Pmax (Vmp):** 17.50 V - **Current at Pmax (Imp):** 8.25 A - **Open-circuit voltage (Voc):** 22.60 V - **Short-circuit current (Isc):** 8.75 A - **Max system voltage:** 1000 V ### Temperature - **Temperature coefficient of Pmax:** -0.400 %/degC - **Temperature coefficient of Voc:** -0.270 %/degC - **Temperature coefficient of Isc:** 0.200 %/degC - **NOCT:** 47 degC ### Cell and construction - **Cell type:** Polycrystalline - **Cell count:** 60 ### Physical - **Length:** 1490 mm - **Width:** 672 mm - **Weight:** 14.6 kg - **Area:** 1.00 m2 - **Power density:** 144.8 Wp/m2 ### Warranty and degradation - **Product warranty:** 25 years - **Performance warranty:** 25 years ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 14007 of 14129 | | Power density | 13989 of 14129 | | Temperature coefficient | 13798 of 14129 | | Weight | 14045 of 14129 | | Warranty | 9912 of 14129 | ## Pros - **Tier-1 manufacturer with 30 years on the market** - REC has operated since 1996 (Norway) and is classified as a Tier-1/bankable manufacturer, which eases project financing with banks and institutional investors compared to lesser-known brands like Isola New Energy or LinkSol. - **Full 25-year product and power warranty** - The RZMP series carries a 25-year warranty on both the product and power output - a standard matching current market expectations, even though the module design itself dates to an earlier technology generation (2008). - **Long field track record since 2008** - The series has been produced continuously since 2008, meaning over 15 years of real-world field data - an advantage when assessing actual power degradation compared to newer series lacking long-term operational history. - **Compact power variants (105-240 Wp)** - 18 variants spanning 105-240 Wp offer flexibility for non-standard mounting surfaces or smaller installations where full-size 400+ Wp modules may not fit geometrically. ## Cons - **Efficiency clearly below peer comparables** - Efficiency of 10.5-14.9% is significantly lower than comparable series: Isola New Energy 210M SPLIT CELL reaches 20.83%, LinkSol LKS-5M 18.8%, and TPL Solar P-54 16.01%. This means up to 40-70% lower energy yield per unit of roof area. - **Marketing description mismatches specifications** - Marketing materials describe the series as using 'advanced n-type cell technology', yet independent data (e.g. the RZMP-135-T variant, 13.5% efficiency, polycrystalline cells) points to older poly-Si technology typical of 13-16% efficiency, not n-type (typically 21-23%). Buyers should verify the actual cell technology before purchase. - **2008-era technology - lacks modern features** - The series dates back roughly 18 years and does not incorporate features common in current premium modules, such as half-cut cells, multi-busbar design, or bifacial technology (is\_bifacial: false), limiting its competitiveness against newer peer series. - **Low power density limits commercial use cases** - At 10.5-14.9% efficiency, matching the installed capacity of peer series with 16-20.83% efficiency requires significantly more roof area, making RZMP a less attractive choice for commercial installations with limited space. ## About this series The REC RZMP PV Modules are designed to maximize energy yield under real operating conditions - even when the roof is partially shaded and the weather is variable. A key advantage is the **advanced n-type cell technology**, which helps to minimize typical power losses and maintain stable production over a longer period. The **high-power density design** also deserves attention, as it allows for extracting more energy from a limited roof area without compromising the aesthetics of the installation. In practice, this series solves two common problems for investors: lack of space and reduced performance in poor lighting conditions. The modules offer **improved performance in low-light conditions** and **high resistance to degradation**, which translates into predictable production and investment security. REC RZMP PV Modules are the ideal choice for single-family homes and demanding commercial installations, where high performance, durability, and technological superiority over standard PERC modules are essential. ## Notable figures - Module efficiency of 14.5% is 7.3pp below average for \*\*database\*\* panels (median: 21.8%) - At 144.8 W/m², this panel generates 73.3 W/m² less per unit area than \*\*database\*\* median (218.1 W/m²) - -0.40%/°C temperature coefficient - 0.10pp worse than \*\*database\*\* median (-0.30%/°C), expect higher hot weather losses - At 14.6 kg, this panel is 11.9 kg lighter than \*\*database\*\* median (26.5 kg) - easier handling during installation - Ranked #14007 out of 14129 panels for efficiency in the database ## Questions ### What warranty do the REC RZMP PV Modules come with and what does it cover? The REC RZMP PV Modules series comes with a 25-year product warranty and a 25-year linear power output warranty. This means the manufacturer guarantees a defined performance level for the entire period and will cover any material or workmanship defects at no cost to the owner. As a Tier 1 manufacturer headquartered in Norway, REC has the financial standing to back these warranties for the full 25 years, giving investors genuine long-term security. ### How does the n-type cell technology in the RZMP series differ from standard PERC modules? The n-type cells used in REC RZMP PV Modules have significantly lower susceptibility to light-induced degradation (LID) and potential-induced degradation (PID) compared to conventional PERC technology. In practice, this means less power loss in the early years of operation and more stable energy production throughout the 25-year warranty period. N-type cells also achieve higher conversion efficiencies, which directly boosts the overall system output. ### Will REC RZMP panels perform well on a partially shaded roof? Yes, the REC RZMP PV Modules series is designed for real-world conditions, including partial shading from chimneys, dormers, or neighboring buildings. The advanced n-type cell technology minimizes power losses caused by uneven irradiance, and the high degradation resistance keeps output stable even in variable weather. For installations with heavy shading, pairing the modules with power optimizers or microinverters is also worth considering. ### What is the rated power of one REC RZMP panel, and how many modules does a typical single-family home need? Each module in the REC RZMP PV Modules series has a maximum rated power of 240 Wp. For a typical single-family home consuming around 3,500-5,000 kWh per year, a system of 4-6 kWp is usually needed, which translates to roughly 17-25 panels. The exact number is calculated by your installer based on annual consumption, roof orientation and tilt angle, and local irradiance data. ### Are REC RZMP PV Modules a good choice for a commercial installation, such as a warehouse or industrial building? Yes, the high power density of this series allows more energy to be harvested from a limited flat or pitched roof area, which is critical in commercial applications. N-type technology ensures low long-term degradation, and the 25-year product and power warranties align with the business requirements of investors calculating LCOE over decades. REC's Tier 1 status also simplifies project financing through banks and leasing institutions. ### Do REC RZMP PV Modules perform efficiently in overcast conditions or cooler climates? Yes, the RZMP series is engineered for low-light performance, which sets it apart from standard PERC modules. N-type cells feature a favorable temperature coefficient of power, meaning they lose less efficiency on cool days than average modules. The Central European climate - with many overcast days and moderate temperatures - is an environment where this technology delivers a measurable advantage. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/data-sheet-66c600e04733.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Resun Solar RS7E-195P](https://comparepv.com/panel/resun-solar-rs7e-195p) | 195 W | +50 W, +3.4 pp, +5 yr warranty | | [JA Solar MYP3036-180](https://comparepv.com/panel/ja-solar-myp3036-180) | 180 W | +35 W, lighter, +3.1 pp | | [MY Solar MYP3036-180](https://comparepv.com/panel/my-solar-myp3036-180) | 180 W | +35 W, lighter, +3.1 pp | | [Resun Solar RS7E-190P](https://comparepv.com/panel/resun-solar-rs7e-190p) | 190 W | +45 W, +2.9 pp, +5 yr warranty | | [JA Solar MYP3036-175](https://comparepv.com/panel/ja-solar-myp3036-175) | 175 W | Cooler, lighter, +2.7 pp | | [MY Solar MYP3036-175](https://comparepv.com/panel/my-solar-myp3036-175) | 175 W | Cooler, lighter, +2.7 pp | | [MY Solar MYM2036-170](https://comparepv.com/panel/my-solar-mym2036-170) | 170 W | Cooler, lighter, +2.6 pp | | [Resun Solar RS7E-185P](https://comparepv.com/panel/resun-solar-rs7e-185p) | 185 W | +40 W, +2.4 pp, +5 yr warranty | | [Waaree WS-195 /24V](https://comparepv.com/panel/waaree-ws-195-24v) | 195 W | +50 W, +2.3 pp, -15 yr warranty | | [REC RZMP-105-T](https://comparepv.com/panel/rec-rzmp-105-t) | 105 W | -40 W, -4.0 pp | | [REC RZMP-110-T](https://comparepv.com/panel/rec-rzmp-110-t) | 110 W | -35 W, -3.5 pp | | [REC RZMP-115-T](https://comparepv.com/panel/rec-rzmp-115-t) | 115 W | -30 W, -3.0 pp | | [REC RZMP-120-T](https://comparepv.com/panel/rec-rzmp-120-t) | 120 W | -25 W, -2.5 pp | | [REC RZMP-125-T](https://comparepv.com/panel/rec-rzmp-125-t) | 125 W | -20 W, -2.0 pp | | [REC RZMP-130-T](https://comparepv.com/panel/rec-rzmp-130-t) | 130 W | -15 W, -1.5 pp | | [REC RZMP-135-T](https://comparepv.com/panel/rec-rzmp-135-t) | 135 W | -10 W, -1.0 pp | | [Heckert Solar ZEUS 1.2 FullBlack 280W](https://comparepv.com/panel/heckert-solar-zeus-1-2-fullblack-280w) | 280 W | +135 W, cooler, +8.8 pp | --- Source: https://comparepv.com/panel/rec-rzmp-145-t Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.