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Compare like with like. Aligned scores, specifications and local evidence within one scoring class or tier.

Market context

Global benchmark

Inverter

Primo GEN24 SC / Plus SC3–6 kW

Fronius | Primo GEN24 3.0 SC / 3.6 SC / 4.0 SC / 4.6 SC / 5.0 SC / 6.0 SC; Plus configuration identities Primo GEN24 3.0 Plus SC / 3.6 Plus SC / 4.0 Plus SC / 4.6 Plus SC / 5.0 Plus SC / 6.0 Plus SC; scored hardware benchmark Primo GEN24 6.0 SC / 6.0 Plus SC

Single-phaseHybridWhole-home backup2 MPPTs

74/ 100

Very good

Strong evidence coverage · 100%

Evidence checked 2026-08-30

AFCI IntegratedIP66 RatedWhole-Home Backup
Full scorecard
Inverter

SMILE-M-S Inverter8–9.999 kW

AlphaESS | SMILE-M8-S-INV, SMILE-M9-S-INV and SMILE-M10-S-INV; scored M10 at 9.999 kW local rating

Single-phaseHybridEssential-load backup4 MPPTs

66/ 100

Very good

Strong evidence coverage · 100%

Evidence checked 2026-09-01

Full scorecard
Side by side

Score profile

marks the better value on rows where a higher number is better. Temperature coefficient counts as higher when it is closer to zero. Size measures such as rated power carry no marker, because a larger product is a different choice rather than a better one.

MeasurePrimo GEN24 SC / Plus SCSMILE-M-S Inverter
Efficiency66 / 100 (better value on this row)52 / 100
Design & Flexibility80 / 10096 / 100
Thermal & Physical Resilience74 / 10070 / 100
Features & Integration90 / 10080 / 100
Safety & Compliance73 / 10070 / 100
Guarantee & Backbone73 / 10054 / 100
Energy Ecosystem66 / 10040 / 100

Efficiency

Primo GEN24 SC / Plus SC
66 / 100 (better value on this row)
SMILE-M-S Inverter
52 / 100

Design & Flexibility

Primo GEN24 SC / Plus SC
80 / 100
SMILE-M-S Inverter
96 / 100

Thermal & Physical Resilience

Primo GEN24 SC / Plus SC
74 / 100
SMILE-M-S Inverter
70 / 100

Features & Integration

Primo GEN24 SC / Plus SC
90 / 100
SMILE-M-S Inverter
80 / 100

Safety & Compliance

Primo GEN24 SC / Plus SC
73 / 100
SMILE-M-S Inverter
70 / 100

Guarantee & Backbone

Primo GEN24 SC / Plus SC
73 / 100
SMILE-M-S Inverter
54 / 100

Energy Ecosystem

Primo GEN24 SC / Plus SC
66 / 100
SMILE-M-S Inverter
40 / 100
Side by side

Key specifications

marks the better value on rows where a higher number is better. Temperature coefficient counts as higher when it is closer to zero. Size measures such as rated power carry no marker, because a larger product is a different choice rather than a better one.

MeasurePrimo GEN24 SC / Plus SCSMILE-M-S Inverter
ArchitectureHybrid inverterHybrid inverter
Published rated AC power range3–6 kW8–9.999 kW
Scored benchmark6 kW9.999 kW
Power6.0 kW9.999 kW
TypeHybridHybrid
Peak eff97.7 % (better value on this row)97.47 %
MPPTs24 (better value on this row)

Architecture

Primo GEN24 SC / Plus SC
Hybrid inverter
SMILE-M-S Inverter
Hybrid inverter

Published rated AC power range

Primo GEN24 SC / Plus SC
3–6 kW
SMILE-M-S Inverter
8–9.999 kW

Scored benchmark

Primo GEN24 SC / Plus SC
6 kW
SMILE-M-S Inverter
9.999 kW

Power

Primo GEN24 SC / Plus SC
6.0 kW
SMILE-M-S Inverter
9.999 kW

Type

Primo GEN24 SC / Plus SC
Hybrid
SMILE-M-S Inverter
Hybrid

Peak eff

Primo GEN24 SC / Plus SC
97.7 % (better value on this row)
SMILE-M-S Inverter
97.47 %

MPPTs

Primo GEN24 SC / Plus SC
2
SMILE-M-S Inverter
4 (better value on this row)
Decision snapshot

Where the comparison separates

OverallPrimo GEN24 SC / Plus SC leads the global score by 8 points.
Strongest dimensionsPrimo GEN24 SC / Plus SC: Features & Integration · SMILE-M-S Inverter: Design & Flexibility
Largest differencePrimo GEN24 SC / Plus SC has the largest pillar edge in Energy Ecosystem (26 points).
Evidence coveragePrimo GEN24 SC / Plus SC: strong evidence coverage (100%) · SMILE-M-S Inverter: strong evidence coverage (100%)

A score lead is only meaningful inside this shared class or tier. Weigh it against the specification and evidence rows above before deciding.

Both products are scored in the Inverter class, on the same rubric weighting. Scores are not comparable across classes or tiers. Full methodology.