HQST 100W 12V Rigid
#3 in Under 150 WFull review
The budget pick for a shed, gate opener, small cabin or ground mount where space isn’t tight. On a crowded van roof a smaller N-type 100 W panel is the better fit.
Amazon $49.99$49.99
The HQST 100W 12V Rigid is the better rigid solar panel overall, rated 3.8 to 3.3. The HQST 100W 12V Rigid leads on durability. The Newpowa 100W Bifacial 12V wins on efficiency. The HQST 100W 12V Rigid costs $20 less ($49.99 vs $69.99).
Newpowa 100W Bifacial 12V
#9 in Under 150 WFull review
A low-cost 100 W panel for a small 12 V system on a van, trailer or shed. The bifacial back adds a little output when the panel is tilted above a light surface.
Amazon $69.99$69.99
Prices 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.
Which should you buy?
- Choose the HQST 100W 12V Rigid for durability (IP65, 5-year warranty vs no IP rating, 2-year warranty).
- Choose the Newpowa 100W Bifacial 12V for efficiency (18.6% module efficiency (from size and rated power) vs 17.7% module efficiency (from size and rated power)).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every under 150 W rigid solar panel; a clear win is highlighted. How we rank explains each one.
| Factor weight | HQST 100W 12V Rigid | Newpowa 100W Bifacial 12V |
|---|---|---|
| Overall rating | 3.8/5 | 3.3/5 |
| Value 45% | 100 $0.50 per rated watt | 93 $0.70 per rated watt |
| Tested output 15% | 50 not yet independently tested (neutral score used) | 50 not yet independently tested (neutral score used) |
| Durability 25% | 51 IP65, 5-year warranty | 7 no IP rating, 2-year warranty |
| Efficiency 15% | 0 17.7% module efficiency (from size and rated power) | 12 18.6% module efficiency (from size and rated power) |
Specifications
| HQST 100W 12V Rigid | Newpowa 100W Bifacial 12V | |
|---|---|---|
| Output | ||
| Rated power | 100 W | 100 W |
| Module efficiency | 17.7% (rated power over panel area) | 18.6% (rated power over panel area) |
| Claimed efficiency | 23% (cell efficiency, "up to") | 21.1% (datasheet "maximum efficiency" (not labeled cell or module)) |
| Cells | Monocrystalline (9BB) | Monocrystalline (Bifacial, transparent backsheet, 30 cells) |
| Bifacial | No | Yes |
| Electrical | ||
| Open-circuit voltage (Voc) | 24.3 V | 20.4 V |
| Voltage at max power (Vmp) | 20.4 V | 17.1 V |
| Short-circuit current (Isc) | 5.2 A | 6.2 A |
| Current at max power (Imp) | 4.9 A | 5.8 A |
| Voc temperature coefficient | -0.3%/°C | -0.4%/°C |
| Series / parallel | Yes | - |
| Connections | ||
| Output connector | MC4 | Pre-attached 3 ft leads with male/female solar connectors |
| Build | ||
| Weight | 14.3 lb (6.5 kg) | 13.7 lb (6.2 kg) |
| Dimensions | 31.8 x 27.5 x 1.18 in | 36.6 x 22.8 x 1.2 in |
| Frame | anti-corrosion aluminum alloy | black anodized aluminum |
| Glass | low-iron tempered | low-iron tempered |
| Junction box rating | IP65 | - |
| Warranty | 5 years | 2 years |
| Output warranty | 95% output for 5 years, 90% for 10 years, 80% for 25 years | 90% output for 10 years, 80% for 25 years |
| Released | 2026-08 | - |