The Newpowa 200W 24V Mono and the Newpowa 150W 12V Mono are evenly matched, rated 2.9 and 2.9. The Newpowa 150W 12V Mono wins on efficiency. The Newpowa 150W 12V Mono costs $33.85 less ($137.72 vs $171.57).
For a 24 V battery bank or a long cable run to an MPPT controller, such as a ground mount away from a cabin. Newpowa’s own store sells it for less than Amazon.
Amazon $209.50 Newpowa $171.57A middle size for a 12 V system where a 100 W panel is too little and a 200 W panel won’t fit. Buy it from Newpowa’s own store, where it costs less than on Amazon.
Amazon $162.99 Newpowa $137.72Prices were last checked October 26, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Each factor is scored 0-100 against the same fixed reference points for every 150 W and up rigid solar panel; a clear win is highlighted. How we rank explains each one.
| Factor weight | Newpowa 200W 24V Mono | Newpowa 150W 12V Mono |
|---|---|---|
| Overall rating | 2.9/5 | 2.9/5 |
| Value 45% | 61 $0.86 per rated watt | 55 $0.92 per rated watt |
| Tested output 15% | 50 not yet independently tested (neutral score used) | 50 not yet independently tested (neutral score used) |
| Durability 25% | 7 no IP rating, 2-year warranty | 7 no IP rating, 2-year warranty |
| Efficiency 15% | 30 19.5% module efficiency (from size and rated power) | 40 20% module efficiency (from size and rated power) |
| Newpowa 200W 24V Mono | Newpowa 150W 12V Mono | |
|---|---|---|
| Output | ||
| Rated power | 200 W | 150 W |
| Module efficiency | 19.5% (rated power over panel area) | 20% (rated power over panel area) |
| Claimed efficiency | 21.8% (datasheet "maximum efficiency" (not labeled cell or module)) | 22.6% (datasheet "maximum efficiency" (not labeled cell or module)) |
| Cells | Monocrystalline (72 cells) | Monocrystalline (10BB, 182 mm cells, 60 cells) |
| Bifacial | No | No |
| Electrical | ||
| Open-circuit voltage (Voc) | 48.7 V | 20.4 V |
| Voltage at max power (Vmp) | 41.5 V | 17.4 V |
| Short-circuit current (Isc) | 5.2 A | 9.1 A |
| Current at max power (Imp) | 4.8 A | 8.6 A |
| Voc temperature coefficient | -0.4%/°C | -0.4%/°C |
| Connections | ||
| Output connector | Pre-attached 3 ft leads with male/female solar connectors | Pre-attached 3 ft leads with male/female solar connectors |
| Build | ||
| Weight | 24.9 lb (11.3 kg) | 18.5 lb (8.4 kg) |
| Dimensions | 52.8 x 30.1 x 1.4 in | 38.6 x 30.1 x 1.4 in |
| Frame | anodized aluminum | anodized aluminum |
| Glass | low-iron tempered | low-iron tempered |
| Warranty | 2 years | 2 years |
| Output warranty | 90% output for 10 years, 80% for 25 years | 90% output for 10 years, 80% for 25 years |
