Renogy ShadowFlux 120W Panel vs Rich Solar MEGA 100 12V Panel

• VerificationRenogy ShadowFlux 120W Panel: 2Rich Solar MEGA 100 12V Panel: 6 (higher)

  only the Renogy ShadowFlux 120W Panel: None verifiable; only the Rich Solar MEGA 100 12V Panel: UL 61730 listed.

  Renogy ShadowFlux 120W Panel

  • No certifier directory lists this model
  • Listings: the datasheet lists CE, UKCA and RCM only, with no UL 61730 claim

  Rich Solar MEGA 100 12V Panel

  • UL Listed PV module (QIIA.E553290) as MEGA 100; not on the CEC PV list
  • Holder: Rich Solar Inc (E553290); contract maker Future Star Energy (Shenzhen) (E549773)
  • Standard: QIIA is UL's PV-module safety category (UL 61730); abridged view prints no edition
  • Also: Intertek ETL Listed to UL 61215-1/-1-1/-2 (design qualification) as MEGA-100
  • Claim: page says certified to UL 61730, IEC 61215 and CSA C22.2
• Operating RangeRenogy ShadowFlux 120W Panel: 8 (higher)Rich Solar MEGA 100 12V Panel: 5

  Renogy ShadowFlux 120W Panel

  • Temperature coefficient of Pmax -0.29 percent per degree C
  • Range: datasheet gives -40 to 185 degrees F

  Rich Solar MEGA 100 12V Panel

  • -0.35 percent per °C temperature coefficient of Pmax
  • Temperature: rated from -40 to +185 °F
• CapacityRenogy ShadowFlux 120W Panel: 2 (higher)Rich Solar MEGA 100 12V Panel: 1

  Renogy ShadowFlux 120W Panel

  • 120 W, the second rung of the rigid-panel ladder
  • Fit: a van or boat roof with room for a 41 x 23 in panel

  Rich Solar MEGA 100 12V Panel

  • 100 W rated, on the 100 to 119 W rung
• FeaturesRenogy ShadowFlux 120W Panel: 4 (higher)Rich Solar MEGA 100 12V Panel: 3

  Renogy ShadowFlux 120W Panel

  • IP67 junction box and cell-level bypass diodes; no bifacial rear
  • Points: the junction box earns two of eight, the bypass diodes one more
  • Leads: IP68 MC4 connectors on 14 AWG leads of 23.6 in

  Rich Solar MEGA 100 12V Panel

  • IP67 junction box and connectors; no diode count or station adapters
  • Build: 3.2 mm AR-coated tempered glass in an anodized aluminum frame
  • Loads: certified for 2400 Pa wind and 5400 Pa snow

Same score

• EfficiencyRenogy ShadowFlux 120W Panel: 2Rich Solar MEGA 100 12V Panel: 2

  Renogy ShadowFlux 120W Panel

  • 120 W from 0.608 square meters works out to 19.7 percent
  • Conflict: the datasheet states 20.7 percent, above the computed 19.7

  Rich Solar MEGA 100 12V Panel

  • 18.7 percent computed from 990 x 540 mm; 22.6 percent cell figure marketed
  • Spec sheet: prints 18.1 percent module efficiency, below the computed figure
• LifespanRenogy ShadowFlux 120W Panel: 7Rich Solar MEGA 100 12V Panel: 7

  Renogy ShadowFlux 120W Panel

  • Warranty document guarantees 80 percent of rated output at 25 years
  • Conflict: renogy.com's spec table calls the output warranty 5 years

  Rich Solar MEGA 100 12V Panel

  • 80 percent of rated output guaranteed at 25 years
• Warranty & SupportRenogy ShadowFlux 120W Panel: 6Rich Solar MEGA 100 12V Panel: 6

  Renogy ShadowFlux 120W Panel

  • 5 years on materials and workmanship
  • Shorter: Renogy's standard N-type rigid panels carry 10 years

  Rich Solar MEGA 100 12V Panel

  • 5 years of workmanship cover in Rich Solar's FAQ, the shorter of its stated terms
  • Conflict: warranty page says 10 years, prorated; spec sheet says 25-year product
  • Proration: 10-year schedule pays in full to year 3, then 5 percent by year 10

Not scored for either

• ValueRenogy ShadowFlux 120W Panel: —not scoredRich Solar MEGA 100 12V Panel: —not scored

• RedditRenogy ShadowFlux 120W Panel: 4Rich Solar MEGA 100 12V Panel: 4

  The Rich Solar MEGA 100 12V Panel reading covers the whole brand.

  Renogy ShadowFlux 120W Panel

  Complaints

  • Over-voltage warning on a power station, per one owner

  Read the full summary

  • Over-voltage: one r/bluetti owner of the 120 W panel reports an over-voltage message on a power station unless the panel is shaded while connecting
  • Output: after connecting, it delivers about 86 W

  Rich Solar MEGA 100 12V Panel

  Read the full summary

  • Scope: few Reddit threads name Rich Solar, and those found are complaints
  • Battery: an r/SolarDIY owner's new ALPHA 5 read 6.7 V instead of 48 V, and Rich Solar's technician had not returned his call after two days (August 2023)
  • Order: an r/SolarDIY buyer waited from March for an out-of-stock ground mount, then was told its price had risen from $180 to $699 and cancelled; the refund took months (May 2025)
• GoogleRenogy ShadowFlux 120W Panel: 6Rich Solar MEGA 100 12V Panel: 6

  The Renogy ShadowFlux 120W Panel reading covers its product line; the Rich Solar MEGA 100 12V Panel reading covers its product line.

  Renogy ShadowFlux 120W Panel

  Read the full summary

  • Focus: forum discussion of the ShadowFlux range centres on the 200 W size
  • No data: a DIY Solar Power Forum request for real-world 120 W shading data drew no owner results
  • Efficiency: on the 200 W panel, one member works Renogy's 25 percent cell claim down to 20.7 percent at module level

  Rich Solar MEGA 100 12V Panel

  Read the full summary

  • DIY Solar Forum: an owner of two Rich Solar 100 W panels said they functioned fine through the summer, worked as specified and that he would buy them again (August 2020)
  • Scope: the post predates the current MEGA 100 spec sheet (July 2026), so it is read at line level
• YouTubeRenogy ShadowFlux 120W Panel: 6 (higher)Rich Solar MEGA 100 12V Panel: 4

  Renogy ShadowFlux 120W Panel

  Liked

  • About 110 W aimed at the sun, per one tester supplied by Renogy
  • 36 W with half the panel covered, per one tester supplied by Renogy

  Read the full summary

  • Disclosure: Primal Outdoors received the panels from Renogy
  • Full sun: about 95 W with the 120 W panel lying flat and about 110 W aimed at the sun
  • Shade: it held 36 W with half the panel covered, and about 10 W with three quarters covered

  Rich Solar MEGA 100 12V Panel

  Liked

  • IP67-rated junction box

  Complaints

  • About 85 W in afternoon sun
  • About 15 percent less energy than a second 100 W panel
  • Crimped, not soldered, busbar joints

  Read the full summary

  • Everyday Solar: Scott ran the 39 x 21.3 in MEGA 100 side by side with another 100 W panel in fall sun near Chicago; it read about 85 W in the afternoon session (October 2024)
  • Energy: it collected 432 Wh across the morning and afternoon sessions against 495 Wh for the other panel, about 15 percent less
  • Build: he found the junction box IP67 rated, with busbar joints crimped at the bottom rather than soldered
  • Disclosure: the video links a home-solar installer's referral program; no Rich Solar tie is stated
• AmazonRenogy ShadowFlux 120W Panel: 8Rich Solar MEGA 100 12V Panel: 8

  The Renogy ShadowFlux 120W Panel reading covers its product line.

  Renogy ShadowFlux 120W Panel

  Read the full summary

  • Listing: the RENOGY REGO 120 W ShadowFlux listing (B0FD9D6PF3) shares its ratings with a 200 W set
  • Rating: 4.3 from 58 ratings, 72 percent five-star and 10 percent one-star

  Rich Solar MEGA 100 12V Panel

  Liked

  • Reliability, tagged positive in 31 reviews
  • Value for money, tagged in 28 reviews
  • Keeps sailboat batteries topped off, per one buyer

  Complaints

  • Durability, tagged negative in 8 reviews
  • Quit within a year with no reply, per one buyer
  • Bulky size, tagged negative in 5 reviews

  Read the full summary

  • Rating: the MEGA 100's own listing (B07DNMY6N4) holds 4.7 stars from 469 ratings, 83 percent five-star and 3 percent one-star (October 2026)
  • Praised: buyers tag reliability positively in 31 of 39 mentions and value in 28 of 30, one keeping sailboat batteries topped off
  • Complaints: durability is tagged negative in 8 of 13 mentions, and one buyer said the panel quit within a year with no reply from Rich Solar