The assessment
How it scores, by category
Market position
The data
DC-coupled battery
Stores DC energy and relies on system power electronics outside the battery product for household AC.
- Product role
- The published battery record covers the storage stack, controller and stated capacity range.
- Published range
- 18 kWh
- Phase
- Not recorded
- Backup boundary
- Installation-specific
Capacity guarantee: minimum retained at year 10
No year-by-year capacity schedule is published for this product - the manufacturer guarantees only this end-of-term minimum, not a specific decline curve. Capacity figure based on the sourced usable capacity of the base configuration; modular systems scale with additional modules.
Blackout protection
67 / 100#35 of 90 batteriesWhole-home (via hybrid inverter)
The blackout score is a standalone benchmark of outage resilience only - it re-weights sourced specs already scored in this product’s pillars (backup tier, switchover, surge strength, backup power, off-grid recharge) and never affects the overall score. Dots show the full battery fleet; the marker is this product.
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 is fixed to the reviewed six-module 18 kWh system, not the larger two-cabinet marketing ceiling. Scored model: PWRcell 2 six-module configuration · checked 2026-08-02. Evidence.
Sources & references · checked 2026-09-01
Strong evidence coverage
21 of 21 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. Current PWRcell 2 product page and specification, warranty revision B dated June 2025, Smart Disconnect Switch manual and buyer-consequence boundaries reviewed 2026-08-07. First-market DE overlay review 2026-09-01: official German catalogues recorded; existing Australian and United States overlays and scores unchanged.
- Sourced valuesData card →
- Archived copy of the primary sourcePDF ↗
Show 3 more
- Financial strength & warranty backingManufacturer ↗
- VPP & grid services readinessManufacturer ↗
- Verified reliabilityManufacturer ↗
Product record history
5 changes to this record · 152 products changed in this update
DE Support Note
- Before
- Not previously recorded
- After
- generac.com/de opens a not-found page. No German catalogue names APKE00076 / PWRcell 2.
Source revision
- Before
- Current PWRcell 2 product page and specification, warranty revision B dated June 2025, Smart Disconnect Switch manual and buyer-consequence boundaries reviewed 2026-08-07
- After
- Current PWRcell 2 product page and specification, warranty revision B dated June 2025, Smart Disconnect Switch manual and buyer-consequence boundaries reviewed 2026-08-07. First-market DE overlay review 2026-09-01: official German catalogues recorded; existing Australian and United States overlays and scores unchanged.
17 changes to this record · 78 products changed in this update
Value
- Before
- Not previously recorded
- After
- Reviewed 2026-08-25: The exact specification guide publishes 88% complete-system round-trip efficiency. No battery/DC round-trip value is substituted into the score.
Evidence sources
- Before
- Not previously recorded
- After
- https://www.generac.com/globalassets/residential/dealers--installers/generac-installer-programs/solar--battery-installer-support/pc2brochure_specguide.pdf
Value
- Before
- Not previously recorded
- After
- The exact specification guide publishes 88% complete-system round-trip efficiency.
Evidence sources
- Before
- Not previously recorded
- After
- https://www.generac.com/globalassets/residential/dealers--installers/generac-installer-programs/solar--battery-installer-support/pc2brochure_specguide.pdf
Round-trip efficiency (%): Evidence status
- Before
- sourced
- After
- No longer recorded
Round-trip efficiency (%): Evidence sources
- Before
- https://www.generac.com/globalassets/residential/dealers--installers/generac-installer-programs/solar--battery-installer-support/pc2brochure_specguide.pdf
- After
- No longer recorded
Evidence sources
- Before
- Not previously recorded
- After
- https://www.generac.com/globalassets/residential/dealers--installers/generac-installer-programs/solar--battery-installer-support/pwrcell-2-warranty-rev-b.pdf
Value
- Before
- Not previously recorded
- After
- The governing warranty uses 7.56 MWh per module and a 70% endpoint, not an independently measured cycles-to-70% result.
This is review.solar's publication history. It does not claim the product changed on the recorded date, and it excludes compatibility, system pairing, installation suitability and relative leaderboard prose. Open the complete JSON record.
Evidence timeline
Recorded verification events for this scorecard. These are evidence checks, not historical score snapshots.
- Core scorecard evidence checked
- DE market evidence checked
- US market evidence checked
- Series benchmark evidence checked
Scored by Solar Analytica Research
Further reading from Findings
Stay across the benchmark.
New scorecards, score changes and market signals, published as they happen.
Our reading
PWRcell 2 18 scores 60, placing 53 of 74 in the Performance & Value class against a class average of 63.0. Its strongest scoring dimension is guarantee & backbone (84), running 29.6 points above the class average on this dimension. Energy Ecosystem scores 43, the lowest pillar for this product. The class average on energy ecosystem is 47. Key specifications: NMC, 10.5 kW continuous output.