RenogyFlex ShadowFlux 100WvsRich SolarMEGA 100 PRO FLEX 24V Panel
The Renogy Flex ShadowFlux 100W scores 4.3 and ranks 6th of 10 in Flexible Solar Panels; the Rich Solar MEGA 100 PRO FLEX 24V Panel scores 3.8 and ranks 9th of 10 in Flexible Solar Panels. The Flex ShadowFlux 100W leads on warranty & support.
Across everything we scored, Renogy Flex ShadowFlux 100W sits 0.45 ahead — led by warranty & support.
Verdict
Flex ShadowFlux 100W ahead · +0.45 (4.3 vs 3.8)
Pick the Renogy Flex ShadowFlux 100W when
Warranty & support matters4vs1
Features matters4vs3
A longer warranty matters3 Yearsvs1 Year
Pick the Rich Solar MEGA 100 PRO FLEX 24V Panel when
A criterion we do not score decides itthe MEGA 100 PRO FLEX 24V Panel leads on none of the ones we do
Scored 15 October 2026 from published specs and owner reviews. We don't buy or test units. How we score
Usability Renogy Flex ShadowFlux 100W and Rich Solar MEGA 100 PRO FLEX 24V Panel, scored 0 to 10
RenogyFlex ShadowFlux 100WRich SolarMEGA 100 PRO FLEX 24V Panel
Warranty & SupportRenogy Flex ShadowFlux 100W: 4 (higher)Rich Solar MEGA 100 PRO FLEX 24V Panel: 1
Renogy Flex ShadowFlux 100W: 3 Years · Rich Solar MEGA 100 PRO FLEX 24V Panel: 1 Year.
RenogyFlex ShadowFlux 100W
3 years on materials and workmanship
Shorter: Renogy gives its older flexible panels 5 years
Rich SolarMEGA 100 PRO FLEX 24V Panel
1 year of material and workmanship cover, not prorated
Scope: Rich Solar's warranty table lists flexible panels at 1 year
FeaturesRenogy Flex ShadowFlux 100W: 4 (higher)Rich Solar MEGA 100 PRO FLEX 24V Panel: 3
RenogyFlex ShadowFlux 100W
IP68 rating and 30 bypass diodes earn 3 of 8 points
Missing: no bifacial cells, no ETFE or glass front, no station adapters
Bending: up to 270 degrees along the long axis; Renogy's FAQ limits horizontal bending
Rich SolarMEGA 100 PRO FLEX 24V Panel
IP68 junction box and MC4 leads; no front sheet, diodes or adapters stated
Cells: 60 half-width ten-busbar cells, 182 x 45.5 mm
Mounting: pre-drilled holes and adhesive backing
Same score
CapacityRenogy Flex ShadowFlux 100W: 1Rich Solar MEGA 100 PRO FLEX 24V Panel: 1
RenogyFlex ShadowFlux 100W
100 W, the bottom rung for a flexible panel
Rich SolarMEGA 100 PRO FLEX 24V Panel
100 W rated, on the 100 to 119 W rung for flexible panels
Electrical: 34.2 V and 2.92 A at Pmax, 40.8 V Voc, 3.15 A Isc
Tolerance: 0 to +5 W positive power tolerance
EfficiencyRenogy Flex ShadowFlux 100W: 1Rich Solar MEGA 100 PRO FLEX 24V Panel: 1
RenogyFlex ShadowFlux 100W
100 W from 0.577 m² works out to 17.3 percent
Cell figure: Renogy advertises 25 percent, a cell figure
Rich SolarMEGA 100 PRO FLEX 24V Panel
16.9 percent module efficiency from 1480 x 400 mm; 22.8 percent is the cell figure
Spec sheet: Rich Solar's own sheet also prints 16.9 percent module efficiency
LifespanRenogy Flex ShadowFlux 100W: 1Rich Solar MEGA 100 PRO FLEX 24V Panel: 1
RenogyFlex ShadowFlux 100W
3-year output warranty with no end-point percentage, below the 5-year rung
Cap: Will Prowse found every flexible panel he tested failed or lost significant output within 6 to 24 months
Tie: Prowse is paid through sponsorships and affiliate links
Not scored: operating range, since Renogy publishes no temperature coefficient
Rich SolarMEGA 100 PRO FLEX 24V Panel
No power-output warranty published; flexible panels capped at 5
VerificationRenogy Flex ShadowFlux 100W: 2Rich Solar MEGA 100 PRO FLEX 24V Panel: 2
RenogyFlex ShadowFlux 100W
No certifier directory lists this model
Listings: Renogy lists CE, UKCA, CA65, TSCA and RCM, with no UL 61730 claim
Rich SolarMEGA 100 PRO FLEX 24V Panel
No listing for RS-F100PB in any directory; page claims none
Claim: page names no safety standard
Scored for one only
Operating RangeRenogy Flex ShadowFlux 100W: —not scoredRich Solar MEGA 100 PRO FLEX 24V Panel: 5
RenogyFlex ShadowFlux 100W
Nothing recorded.
Rich SolarMEGA 100 PRO FLEX 24V Panel
-0.35 percent per °C temperature coefficient of Pmax
Loads: rated 5,400 Pa snow and 2,400 Pa wind; -40 to 185 °F
Not scored for either
ValueRenogy Flex ShadowFlux 100W: —not scoredRich Solar MEGA 100 PRO FLEX 24V Panel: —not scored
Social score about the Renogy Flex ShadowFlux 100W and the Rich Solar MEGA 100 PRO FLEX 24V Panel
RenogyFlex ShadowFlux 100WRich SolarMEGA 100 PRO FLEX 24V Panel
RedditRenogy Flex ShadowFlux 100W: 7 (higher)Rich Solar MEGA 100 PRO FLEX 24V Panel: 4
The Renogy Flex ShadowFlux 100W reading covers the whole brand; the Rich Solar MEGA 100 PRO FLEX 24V Panel reading covers the whole brand.
RenogyFlex ShadowFlux 100W
Read the full summary
Durable: an r/OffGrid owner has run several Renogy rigid panels for more than a decade with none failed; an r/vandwellers thread sums it up as panels fine, other gear less so
Warranty: an r/VanLife owner's RSP200D lost half its voltage after about 18 months, and Renogy shipped a replacement in two weeks under the 5-year warranty; that poster is quoted on Renogy's own ShadowFlux page
Support: an r/SolarDIY buyer of the 200 W suitcase reported a defective charge controller, two wrong replacement parts and dozens of emails before a 20 percent refund (2025)
Rich SolarMEGA 100 PRO FLEX 24V 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 Flex ShadowFlux 100W: 6 (higher)Rich Solar MEGA 100 PRO FLEX 24V Panel: 5
The Renogy Flex ShadowFlux 100W reading covers the whole brand; the Rich Solar MEGA 100 PRO FLEX 24V Panel reading covers the whole brand.
RenogyFlex ShadowFlux 100W
Read the full summary
Footprint Hero: links Renogy panels through Amazon and Renogy's own affiliate program; ranked Renogy's older 100 W mono panel first of five 100 W panels it tested
Tests: 71.6 W peak in a December output test (2021) and 570 Wh over 24 hours against 490 Wh from a Newpowa (2023)
DIY Solar Forum: a 2022 thread opens with an owner whose Renogy gear still works after a decade
Low output: a thread titled 'I only get 85W out of my Two Renogy 100W panels' reports one panel as low as 40 percent of rating and four averaging 54 percent
Rich SolarMEGA 100 PRO FLEX 24V Panel
Read the full summary
Panels: DIY Solar Forum owners of Rich Solar 100 W panels reported them working as rated, one saying eight of them each pushed more than 100 W (August to September 2020)
Defects: an owner of 20 of the 100 W poly panels saw faint snail trails after a summer and found one with a broken diode wire (January 2021)
Controller: another found Rich Solar's MPPT controller OK but its setup and Bluetooth app in need of work (January 2021)
Warranty: a DIY Solar Forum owner reported Rich Solar cut its CIGS panel warranty from 5 years to 1 in 2021 (June 2026); an Escape Forum owner waited six weeks on a warranty claim (August 2024)
YouTubeRenogy Flex ShadowFlux 100W: 6Rich Solar MEGA 100 PRO FLEX 24V Panel: 6
The Renogy Flex ShadowFlux 100W reading covers the whole brand; the Rich Solar MEGA 100 PRO FLEX 24V Panel reading covers the whole brand.
RenogyFlex ShadowFlux 100W
Read the full summary
Disclosure: both channels found carry a tie to the panels they review
Freedom in a Can: passes on a 10 percent Renogy code through Renogy's affiliate link; found no delamination on two 100 W flexible panels after 9 months and 9,000 miles
Johnny's Weekends: earns Amazon commission on the panels it links; found Renogy's 200 W flexible panel performed well but trailed a CIGS panel under shade (2023, about 128,000 views)
Rich SolarMEGA 100 PRO FLEX 24V Panel
Read the full summary
Will Prowse: in a test of several panels a Rich Solar 200 W mono gave 157 W, 78.5 percent of rating, and a 100 W poly 88 W; he kept the poly first on his list for a small panel (May 2021, about 366,000 views)
Disclosure: Will Prowse states every video includes paid promotion or free product and some links are affiliate links
AmazonRenogy Flex ShadowFlux 100W: 7Rich Solar MEGA 100 PRO FLEX 24V Panel: 8 (higher)
The Renogy Flex ShadowFlux 100W reading covers its product line; the Rich Solar MEGA 100 PRO FLEX 24V Panel reading covers the whole brand.
RenogyFlex ShadowFlux 100W
Read the full summary
Listing: Renogy's Amazon US variation family for the Flex ShadowFlux (100 W B0HJR1VRF7, 200 W B0HJQQ6RY4) reads 4.4 from 474 ratings across both sizes and pack options
Caveat: Amazon marks the listing new in the past month, and its top reviews date from 2022 and describe Renogy's earlier 175 W flexible panels
Scope: the figure describes the previous flexible range rather than this panel
Rich SolarMEGA 100 PRO FLEX 24V Panel
Read the full summary
Seller: Rich Solar's Amazon US listings sit in a RICH SOLAR brand store sold and shipped by SUNRICH ENERGY
Panels: the 100 W 12 V panel family reads 4.7 from 1,326 ratings, 84 percent five-star and 2 percent one-star; the 200 W 12 V panel 4.6 from 519; the 200 W 24 V panel 4.3 from 252 (October 2026)
Controller: the BRAVO 40 MPPT controller reads 3.8 from 4 ratings (October 2026)
Renogy Flex ShadowFlux 100W vs Rich Solar MEGA 100 PRO FLEX 24V Panel: pros and cons
RenogyFlex ShadowFlux 100W vs Rich SolarMEGA 100 PRO FLEX 24V Panel: common questions
Is the Renogy Flex ShadowFlux 100W better than the Rich Solar MEGA 100 PRO FLEX 24V Panel?
On our scores, the Renogy Flex ShadowFlux 100W is ahead, 4.3 against 3.8. The Renogy Flex ShadowFlux 100W leads on warranty & support (4 against 1) and features (4 against 3).
Which has the longer warranty, the Renogy Flex ShadowFlux 100W or the Rich Solar MEGA 100 PRO FLEX 24V Panel?
The Renogy Flex ShadowFlux 100W: 3 Years, against 1 Year.
What do owners say about the Renogy Flex ShadowFlux 100W and the Rich Solar MEGA 100 PRO FLEX 24V Panel?
Across 4 independent sources scored for both, the Renogy Flex ShadowFlux 100W is ahead on Reddit and Google; the Rich Solar MEGA 100 PRO FLEX 24V Panel is ahead on Amazon; YouTube is level.
More flexible solar panels comparisons
More head-to-heads with these two, plus the full brand comparison.
Scores calculated 15 October 2026 · Products excluded where fewer than two independent sources cover them · Researched and edited by Michael Ambrose · Unbroken Ads LLC · How we score