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Inverter

PLENTICORE G3

4–20 kW · Hybrid · Three-phase · 3 MPPTs

KOSTAL

63/ 100

Good

Global

The verdict. In our Inverter class, KOSTAL PLENTICORE G3 leads on efficiency.

30thof 34 in InverterBottom quarterclass average 70.5
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The assessment

How it scores, by category

Efficiency74
Design & Flexibility71
Thermal & Physical Resilience64
Features & Integration64
Safety & Compliance70
Guarantee & Backbone50
Energy Ecosystem40

Market position

30thof 34 in InverterBottom quarter
566382

Our reading

PLENTICORE G3 scores 63, placing 30 of 34 in the Inverter class against a class average of 70.5. Its strongest scoring dimension is efficiency (74), running 6.3 points above the class average on this dimension. Energy Ecosystem scores 40, the lowest pillar for this product. The class average on energy ecosystem is 50. Key specifications: 98.21% peak efficiency, 3 MPPT inputs, 10-year warranty.

The data

Power
20kW
Type
Hybrid
Peak eff
98.21%
MPPTs
3
Technology architecture

Hybrid inverter

Architecture guide

Manages PV, battery DC and household AC through the inverter platform.

Product role
The battery remains a separate product even when it belongs to the same branded platform.
Published range
4–20 kW
Phase
Three phase
Backup boundary
Not recorded
Architecture describes the product boundary. It is not a system design or an equipment-pairing decision.

Warranty coverage: 10-year term

Coverage includes

Parts
Labour
Extendable
Market typical10yr0yr5yr10yr15yr20yr25yr

Parts only · term longer than 13 of 70 scored inverters

No inverter in the fleet publishes a year-by-year performance or output guarantee the way panels and batteries do - this shows the covered term against the market-typical term and where every scored inverter’s term lands (grey dots, sized by model count), plus what the warranty actually includes.

Before you buy
Local positionUse a market view to check local availability, approvals and warranty scope.
Ask the installerWill the exact PLENTICORE G3 model satisfy the site phase, array, MPPT, export-control and local grid requirements?

Verification & sources

Market context

Global evidencechange in the site menu

Global benchmark. This scorecard is benchmarked globally. A global score does not imply local availability, certification, warranty coverage, or installer compatibility.

Benchmark anchor. The score uses the named exact German benchmark; larger stacks, paid states and nearby generations do not transfer evidence. Scored model: PLENTICORE L G3 20.0 · checked 2026-08-16. Evidence.

Sources & references · checked 2026-08-16

Strong evidence coverage

15 of 15 scored criteria link directly to a published source.

Values marked estimated, derived, or not found remain visible on the audit sheet and do not carry the same evidential weight as a linked source. Coverage measures direct links, not an independent guarantee that a claim is correct.

Record revision. German PLENTICORE G3 datasheet September 2025, July 2026 warranty and ZEREZ list checked 2026-08-16

Evidence timeline

Recorded verification events for this scorecard. These are evidence checks, not historical score snapshots.

  1. Core scorecard evidence checked
  2. DE market evidence checked
  3. Series benchmark evidence checked

Evidence record (JSON)

Scored by Solar Analytica Research

Further reading from Findings

Stay across the benchmark.

New scorecards, score changes and market signals, published as they happen.