Keep zero-weight batteries parked in automatic control

[tomquist]

Why

Setting every battery's distribution weight to zero still allocated the grid demand equally: two idle batteries at weight zero received 500 W intended targets for 1,000 W import. A zero weight is documented as parking at zero output.

Python and ESPHome now handle an explicitly parked consumer before automatic allocation and probing, winding existing output down to zero. Restoring its weight resumes automatic allocation; explicit manual targets retain precedence. Parking either participant now cancels an in-flight efficiency probe, preventing restoration before its deadline from reviving the old probe target.

Validation

• Ruff formatting/checks and mypy pass.
• Local pytest: 1,615 passed, 107 skipped (optional integration prerequisites); regressions cover all-zero pools, restoring weights, manual overrides, and parking either probe participant before restoring the candidate.
• All eight C++ host test binaries passed: 149 tests, including the matching parking regressions. Built with a locally cloned googletest checkout.
• Python/C++ parity suite before optional tool setup: 61 passed, 48 skipped. Expanded ESPHome integration attempts did not complete in this environment.
• Prior implementation CI passed. The probe-cancellation follow-up is commit 6fdf7b8; its GitHub checks must run on the updated head.
• Steering evaluation: all 33 scenarios, five seeds each; all 15 aggregate metrics unchanged and no guardrail regressions, including a fresh comparison after probe cancellation.
• One user-facing changelog bullet under Next.

No physical batteries were used. Local regression tests and the firmware-model comparison validate the behavior; GitHub CI covers the full build and integration matrix.

Summary by CodeRabbit

• Bug Fixes
  • Batteries with all distribution weights set to zero now smoothly wind down to zero output instead of automatically charging or discharging.
  • Restoring a positive distribution weight allows the battery to resume covering demand through normal allocation.
  • Manual battery targets continue to be honored, even when the distribution weight is zero.
  • Improved behavior across charging and discharging modes when batteries are parked.
  • Parking a battery during an active balancing probe now clears the stale probe state before normal operation resumes.

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📥 Commits

Reviewing files that changed from the base of the PR and between a9d9cf4 and 6fdf7b8.

📒 Files selected for processing (4)

• esphome/components/ct002/balancer.cpp
• src/astrameter/ct002/balancer.py
• tests/components/ct002/host_balancer_test.cpp
• tests/test_balancer_distribution_weight.py

🚧 Files skipped from review as they are similar to previous changes (4)

• esphome/components/ct002/balancer.cpp
• tests/test_balancer_distribution_weight.py
• tests/components/ct002/host_balancer_test.cpp
• src/astrameter/ct002/balancer.py

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Walkthrough

The C++ and Python balancers now park zero-weight batteries at zero output and clear active probe state before allocation resumes. Tests cover distribution modes, grid directions, power states, manual overrides, weight restoration, and probe cancellation.

Changes

Zero-weight battery parking

Layer / File(s)	Summary
Zero-weight auto-target handling esphome/components/ct002/balancer.cpp, src/astrameter/ct002/balancer.py, CHANGELOG.md	Both balancer implementations return a paced steer-to-zero command for zero-weight consumers before allocation and probing. They clear active probe state when the consumer is a probe participant. The changelog links the fix to PR 646.
Parking and probe regression coverage tests/components/ct002/host_balancer_test.cpp, tests/test_balancer_distribution_weight.py	Tests cover zero-weight parking across grid directions, power states, and distribution modes. They verify manual targets, resumed allocation after weight restoration, and probe cancellation before the previous deadline.

Estimated code review effort: 3 (Moderate) | ~20 minutes

Merge Risk: ⚪ Minimal · up to 6fdf7

Zero-weight batteries are now parked at zero output while manual targets retain precedence. No current merge-blocking risk is identified.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 43.75% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 16 functions across 4 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Title check	✅ Passed	The title clearly and concisely describes the main change: keeping zero-weight batteries parked during automatic control.
Description check	✅ Passed	The description explains the user problem, the implemented behavior, probe cancellation, validation results, parity status, and changelog update. It omits the template's formal Checklist section and d…

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[github-actions]

Steering evaluation (base vs head)

Overall: 0 improved, 0 regressed, 15 unchanged across 15 metrics — mean 0% (unchanged).

Priority: priority-weighted 0% (unchanged) — ✅ no do-no-harm guardrail regressions.

Lower is better for every metric. See src/astrameter/simulator/eval_metrics.py for definitions.

Metrics are the per-scenario mean of 5 seeds.

Aggregate — mean across 33 scenarios

Metric	Base	Head	Δ
settle_mean_s	38.9	38.9	=
settle_p95_s	67.6	67.6	=
unsettled_events	0.7	0.7	=
overshoot_mean_w	50.5	50.5	=
overshoot_max_w	119.6	119.6	=
band_crossings_per_h	290.8	290.8	=
grid_p2p_w	266.4	266.4	=
grid_rms_w	238.4	238.4	=
steady_rms_w	114.0	114.0	=
mean_abs_grid_w	96.3	96.3	=
share_imbalance_w	60.7	60.7	=
avoidable_import_wh	33.6	33.6	=
avoidable_export_wh	25.9	25.9	=
cost_regret_ct	0.76	0.76	=
battery_travel_w_per_h	23102.7	23102.7	=

📊 Interactive grid-power charts (zoom / hover / toggle series) are in the self-contained steering-eval-report.html report — see the link below (it opens directly in the browser).

What do these metrics mean?

Metric	Meaning
settle_mean_s	Mean seconds after a load/PV step for grid power to return inside the ±25 W settle band and hold for 10 s (reaction speed).
settle_p95_s	95th-percentile settle time — the slow tail of reactions.
unsettled_events	Number of disturbance events that never settled within the 10-minute measurement window.
overshoot_mean_w	Mean overshoot (W): how far grid power swings past zero to the opposite sign after an event.
overshoot_max_w	Worst-case overshoot (W) across all events.
band_crossings_per_h	Sign flips per hour across the ±20 W hysteresis band — oscillation / hunting frequency.
grid_p2p_w	Sustained peak-to-peak grid swing (95th - 5th percentile) over the whole run — oscillation amplitude. Non-zero whenever the loop keeps hunting, including continuous oscillation the step-response metrics (settle/overshoot) miss.
grid_rms_w	RMS grid power (W) over the whole run, transients included — the L2 tracking error: how cleanly the loop held zero, penalising big excursions (overshoot, swings) far harder than a small steady offset. Pairs with battery_travel_w_per_h as the control-effort term.
steady_rms_w	RMS grid power (W) during steady state (excluding the 120 s after each event) — residual jitter when nothing is changing.
mean_abs_grid_w	Mean absolute grid power (W) over the whole run — overall tracking accuracy.
share_imbalance_w	Time-weighted watts misallocated between batteries sharing a phase (sum of each battery's deviation from the even fair share) — 0 when the pool splits load evenly, higher when one battery is left lopsided (issue #523). 0 for scenarios with at most one battery per phase.
avoidable_import_wh	Energy imported from the grid (Wh) the battery could have supplied (it had charge and discharge headroom) — missed self-consumption.
avoidable_export_wh	Energy exported to the grid (Wh) an AC-chargeable battery could have absorbed (it had room and charge headroom) — missed charging.
cost_regret_ct	Money north-star: electricity bill (eurocents, import @ 30 ct/kWh, export @ 8 ct/kWh) over what a perfect-foresight optimal battery would have paid on the same load. Ungameable (both grid directions cost); 0 = matched the optimum. The single number that says how much the controller left on the table.
battery_travel_w_per_h	Total absolute change in battery setpoints per hour (W/h) — control effort / actuator wear; lower is smoother.

Per-scenario tables (33 scenarios)

b2500_pair_dc_floor — settle 103.9→103.9s, overshoot 102.1→102.1W, RMS 155.8→155.8W

Metric	Base	Head	Δ
settle_mean_s	103.9	103.9	=
settle_p95_s	247.5	247.5	=
unsettled_events	4.4	4.4	=
overshoot_mean_w	49.9	49.9	=
overshoot_max_w	102.1	102.1	=
band_crossings_per_h	17.4	17.4	=
grid_p2p_w	666.3	666.3	=
grid_rms_w	316.5	316.5	=
steady_rms_w	155.8	155.8	=
mean_abs_grid_w	136.5	136.5	=
share_imbalance_w	55.1	55.1	=
avoidable_import_wh	37.6	37.6	=
avoidable_export_wh	0.0	0.0	=
cost_regret_ct	0.71	0.71	=
battery_travel_w_per_h	16916.8	16916.8	=

full_battery_low_pace — settle 0.0→0.0s, overshoot 0.0→0.0W, RMS 22.5→22.5W

Metric	Base	Head	Δ
settle_mean_s	0.0	0.0	=
settle_p95_s	0.0	0.0	=
unsettled_events	0.0	0.0	=
overshoot_mean_w	0.0	0.0	=
overshoot_max_w	0.0	0.0	=
band_crossings_per_h	0.0	0.0	=
grid_p2p_w	31.0	31.0	=
grid_rms_w	22.5	22.5	=
steady_rms_w	22.5	22.5	=
mean_abs_grid_w	20.3	20.3	=
share_imbalance_w	0.0	0.0	=
avoidable_import_wh	0.0	0.0	=
avoidable_export_wh	5.1	5.1	=
cost_regret_ct	0.0	0.0	=
battery_travel_w_per_h	7668.0	7668.0	=

mixed_cadence/eff — settle 43.9→43.9s, overshoot 148.2→148.2W, RMS 21.2→21.2W

Metric	Base	Head	Δ
settle_mean_s	43.9	43.9	=
settle_p95_s	63.0	63.0	=
unsettled_events	0.0	0.0	=
overshoot_mean_w	63.0	63.0	=
overshoot_max_w	148.2	148.2	=
band_crossings_per_h	23.6	23.6	=
grid_p2p_w	115.4	115.4	=
grid_rms_w	247.3	247.3	=
steady_rms_w	21.2	21.2	=
mean_abs_grid_w	59.3	59.3	=
share_imbalance_w	209.1	209.1	=
avoidable_import_wh	33.6	33.6	=
avoidable_export_wh	25.8	25.8	=
cost_regret_ct	0.8	0.8	=
battery_travel_w_per_h	30252.6	30252.6	=

mixed_cadence/fair — settle 43.2→43.2s, overshoot 43.6→43.6W, RMS 13.1→13.1W

Metric	Base	Head	Δ
settle_mean_s	43.2	43.2	=
settle_p95_s	60.9	60.9	=
unsettled_events	0.0	0.0	=
overshoot_mean_w	21.2	21.2	=
overshoot_max_w	43.6	43.6	=
band_crossings_per_h	16.8	16.8	=
grid_p2p_w	70.4	70.4	=
grid_rms_w	244.0	244.0	=
steady_rms_w	13.1	13.1	=
mean_abs_grid_w	56.0	56.0	=
share_imbalance_w	89.4	89.4	=
avoidable_import_wh	30.9	30.9	=
avoidable_export_wh	25.0	25.0	=
cost_regret_ct	0.73	0.73	=
battery_travel_w_per_h	26948.8	26948.8	=

mixed_cadence_solar/eff — settle 46.6→46.6s, overshoot 1077.6→1077.6W, RMS 51.6→51.6W

Metric	Base	Head	Δ
settle_mean_s	46.6	46.6	=
settle_p95_s	84.8	84.8	=
unsettled_events	2.4	2.4	=
overshoot_mean_w	133.1	133.1	=
overshoot_max_w	1077.6	1077.6	=
band_crossings_per_h	39.2	39.2	=
grid_p2p_w	144.1	144.1	=
grid_rms_w	266.8	266.8	=
steady_rms_w	51.6	51.6	=
mean_abs_grid_w	74.2	74.2	=
share_imbalance_w	135.0	135.0	=
avoidable_import_wh	52.6	52.6	=
avoidable_export_wh	58.7	58.7	=
cost_regret_ct	1.11	1.11	=
battery_travel_w_per_h	42784.4	42784.4	=

mixed_cadence_solar/fair — settle 51.1→51.1s, overshoot 65.5→65.5W, RMS 22.6→22.6W

Metric	Base	Head	Δ
settle_mean_s	51.1	51.1	=
settle_p95_s	109.3	109.3	=
unsettled_events	1.8	1.8	=
overshoot_mean_w	26.8	26.8	=
overshoot_max_w	65.5	65.5	=
band_crossings_per_h	29.9	29.9	=
grid_p2p_w	92.6	92.6	=
grid_rms_w	252.9	252.9	=
steady_rms_w	22.6	22.6	=
mean_abs_grid_w	66.9	66.9	=
share_imbalance_w	102.6	102.6	=
avoidable_import_wh	47.8	47.8	=
avoidable_export_wh	52.6	52.6	=
cost_regret_ct	1.01	1.01	=
battery_travel_w_per_h	32090.4	32090.4	=

mixed_venus_b2500/eff — settle 108.6→108.6s, overshoot 319.9→319.9W, RMS 28.6→28.6W

Metric	Base	Head	Δ
settle_mean_s	108.6	108.6	=
settle_p95_s	227.0	227.0	=
unsettled_events	3.2	3.2	=
overshoot_mean_w	158.3	158.3	=
overshoot_max_w	319.9	319.9	=
band_crossings_per_h	108.8	108.8	=
grid_p2p_w	101.3	101.3	=
grid_rms_w	198.6	198.6	=
steady_rms_w	28.6	28.6	=
mean_abs_grid_w	50.1	50.1	=
share_imbalance_w	270.9	270.9	=
avoidable_import_wh	52.9	52.9	=
avoidable_export_wh	22.1	22.1	=
cost_regret_ct	1.41	1.41	=
battery_travel_w_per_h	46399.0	46399.0	=

mixed_venus_b2500/fair — settle 128.0→128.0s, overshoot 319.0→319.0W, RMS 37.6→37.6W

Metric	Base	Head	Δ
settle_mean_s	128.0	128.0	=
settle_p95_s	242.9	242.9	=
unsettled_events	3.4	3.4	=
overshoot_mean_w	178.3	178.3	=
overshoot_max_w	319.0	319.0	=
band_crossings_per_h	115.7	115.7	=
grid_p2p_w	96.0	96.0	=
grid_rms_w	194.3	194.3	=
steady_rms_w	37.6	37.6	=
mean_abs_grid_w	58.5	58.5	=
share_imbalance_w	144.0	144.0	=
avoidable_import_wh	66.7	66.7	=
avoidable_export_wh	21.1	21.1	=
cost_regret_ct	1.83	1.83	=
battery_travel_w_per_h	41798.0	41798.0	=

phase_imbalance — settle 60.0→60.0s, overshoot 163.7→163.7W, RMS 30.3→30.3W

Metric	Base	Head	Δ
settle_mean_s	60.0	60.0	=
settle_p95_s	135.1	135.1	=
unsettled_events	1.0	1.0	=
overshoot_mean_w	85.2	85.2	=
overshoot_max_w	163.7	163.7	=
band_crossings_per_h	67.2	67.2	=
grid_p2p_w	41.8	41.8	=
grid_rms_w	191.6	191.6	=
steady_rms_w	30.3	30.3	=
mean_abs_grid_w	38.2	38.2	=
share_imbalance_w	0.0	0.0	=
avoidable_import_wh	24.0	24.0	=
avoidable_export_wh	14.2	14.2	=
cost_regret_ct	0.61	0.61	=
battery_travel_w_per_h	18784.2	18784.2	=

single_venus_d_solar — settle 23.7→23.7s, overshoot 83.2→83.2W, RMS 16.0→16.0W

Metric	Base	Head	Δ
settle_mean_s	23.7	23.7	=
settle_p95_s	27.9	27.9	=
unsettled_events	0.0	0.0	=
overshoot_mean_w	72.0	72.0	=
overshoot_max_w	83.2	83.2	=
band_crossings_per_h	19.7	19.7	=
grid_p2p_w	33.4	33.4	=
grid_rms_w	103.0	103.0	=
steady_rms_w	16.0	16.0	=
mean_abs_grid_w	18.4	18.4	=
share_imbalance_w	0.0	0.0	=
avoidable_import_wh	12.5	12.5	=
avoidable_export_wh	15.1	15.1	=
cost_regret_ct	0.26	0.26	=
battery_travel_w_per_h	7657.8	7657.8	=

single_venus_d_steps — settle 25.2→25.2s, overshoot 86.6→86.6W, RMS 14.6→14.6W

Metric	Base	Head	Δ
settle_mean_s	25.2	25.2	=
settle_p95_s	31.4	31.4	=
unsettled_events	0.0	0.0	=
overshoot_mean_w	70.6	70.6	=
overshoot_max_w	86.6	86.6	=
band_crossings_per_h	19.0	19.0	=
grid_p2p_w	24.7	24.7	=
grid_rms_w	256.5	256.5	=
steady_rms_w	14.6	14.6	=
mean_abs_grid_w	57.4	57.4	=
share_imbalance_w	0.0	0.0	=
avoidable_import_wh	30.6	30.6	=
avoidable_export_wh	26.7	26.7	=
cost_regret_ct	0.71	0.71	=
battery_travel_w_per_h	19146.0	19146.0	=

single_venus_d_washer — settle 0.0→0.0s, overshoot 0.0→0.0W, RMS 59.9→59.9W

Metric	Base	Head	Δ
settle_mean_s	0.0	0.0	=
settle_p95_s	0.0	0.0	=
unsettled_events	0.0	0.0	=
overshoot_mean_w	0.0	0.0	=
overshoot_max_w	0.0	0.0	=
band_crossings_per_h	320.4	320.4	=
grid_p2p_w	188.8	188.8	=
grid_rms_w	59.9	59.9	=
steady_rms_w	59.9	59.9	=
mean_abs_grid_w	40.9	40.9	=
share_imbalance_w	0.0	0.0	=
avoidable_import_wh	12.1	12.1	=
avoidable_export_wh	8.3	8.3	=
cost_regret_ct	0.3	0.3	=
battery_travel_w_per_h	21397.6	21397.6	=

single_venus_drain — settle 0.0→0.0s, overshoot 0.0→0.0W, RMS 907.3→907.3W

Metric	Base	Head	Δ
settle_mean_s	0.0	0.0	=
settle_p95_s	0.0	0.0	=
unsettled_events	0.0	0.0	=
overshoot_mean_w	0.0	0.0	=
overshoot_max_w	0.0	0.0	=
band_crossings_per_h	68.9	68.9	=
grid_p2p_w	1597.5	1597.5	=
grid_rms_w	907.3	907.3	=
steady_rms_w	907.3	907.3	=
mean_abs_grid_w	645.3	645.3	=
share_imbalance_w	0.0	0.0	=
avoidable_import_wh	14.4	14.4	=
avoidable_export_wh	10.2	10.2	=
cost_regret_ct	0.21	0.21	=
battery_travel_w_per_h	4043.2	4043.2	=

single_venus_fill — settle 360.0→360.0s, overshoot 0.0→0.0W, RMS 953.6→953.6W

Metric	Base	Head	Δ
settle_mean_s	360.0	360.0	=
settle_p95_s	600.0	600.0	=
unsettled_events	4.0	4.0	=
overshoot_mean_w	0.0	0.0	=
overshoot_max_w	0.0	0.0	=
band_crossings_per_h	18.7	18.7	=
grid_p2p_w	1715.6	1715.6	=
grid_rms_w	978.7	978.7	=
steady_rms_w	953.6	953.6	=
mean_abs_grid_w	662.5	662.5	=
share_imbalance_w	0.0	0.0	=
avoidable_import_wh	4.1	4.1	=
avoidable_export_wh	6.7	6.7	=
cost_regret_ct	0.12	0.12	=
battery_travel_w_per_h	3504.8	3504.8	=

single_venus_noisy — settle 0.0→0.0s, overshoot 0.0→0.0W, RMS 94.0→94.0W

Metric	Base	Head	Δ
settle_mean_s	0.0	0.0	=
settle_p95_s	0.0	0.0	=
unsettled_events	0.0	0.0	=
overshoot_mean_w	0.0	0.0	=
overshoot_max_w	0.0	0.0	=
band_crossings_per_h	1456.6	1456.6	=
grid_p2p_w	294.2	294.2	=
grid_rms_w	94.0	94.0	=
steady_rms_w	94.0	94.0	=
mean_abs_grid_w	78.9	78.9	=
share_imbalance_w	0.0	0.0	=
avoidable_import_wh	43.5	43.5	=
avoidable_export_wh	35.4	35.4	=
cost_regret_ct	1.02	1.02	=
battery_travel_w_per_h	20892.8	20892.8	=

single_venus_pv — settle 0.0→0.0s, overshoot 0.0→0.0W, RMS 59.2→59.2W

Metric	Base	Head	Δ
settle_mean_s	0.0	0.0	=
settle_p95_s	0.0	0.0	=
unsettled_events	0.0	0.0	=
overshoot_mean_w	0.0	0.0	=
overshoot_max_w	0.0	0.0	=
band_crossings_per_h	42.4	42.4	=
grid_p2p_w	44.1	44.1	=
grid_rms_w	59.2	59.2	=
steady_rms_w	59.2	59.2	=
mean_abs_grid_w	17.3	17.3	=
share_imbalance_w	0.0	0.0	=
avoidable_import_wh	8.6	8.6	=
avoidable_export_wh	17.3	17.3	=
cost_regret_ct	0.12	0.12	=
battery_travel_w_per_h	7132.6	7132.6	=

single_venus_solar — settle 26.0→26.0s, overshoot 93.0→93.0W, RMS 17.8→17.8W

Metric	Base	Head	Δ
settle_mean_s	26.0	26.0	=
settle_p95_s	31.3	31.3	=
unsettled_events	0.0	0.0	=
overshoot_mean_w	78.7	78.7	=
overshoot_max_w	93.0	93.0	=
band_crossings_per_h	29.6	29.6	=
grid_p2p_w	42.7	42.7	=
grid_rms_w	104.0	104.0	=
steady_rms_w	17.8	17.8	=
mean_abs_grid_w	20.6	20.6	=
share_imbalance_w	0.0	0.0	=
avoidable_import_wh	13.9	13.9	=
avoidable_export_wh	17.0	17.0	=
cost_regret_ct	0.28	0.28	=
battery_travel_w_per_h	7467.0	7467.0	=

single_venus_solar_slow — settle 34.0→34.0s, overshoot 66.2→66.2W, RMS 22.7→22.7W

Metric	Base	Head	Δ
settle_mean_s	34.0	34.0	=
settle_p95_s	42.3	42.3	=
unsettled_events	0.0	0.0	=
overshoot_mean_w	31.6	31.6	=
overshoot_max_w	66.2	66.2	=
band_crossings_per_h	8.8	8.8	=
grid_p2p_w	61.1	61.1	=
grid_rms_w	127.6	127.6	=
steady_rms_w	22.7	22.7	=
mean_abs_grid_w	30.7	30.7	=
share_imbalance_w	0.0	0.0	=
avoidable_import_wh	19.6	19.6	=
avoidable_export_wh	26.4	26.4	=
cost_regret_ct	0.38	0.38	=
battery_travel_w_per_h	6465.2	6465.2	=

single_venus_steps — settle 25.2→25.2s, overshoot 86.6→86.6W, RMS 14.6→14.6W

Metric	Base	Head	Δ
settle_mean_s	25.2	25.2	=
settle_p95_s	31.4	31.4	=
unsettled_events	0.0	0.0	=
overshoot_mean_w	70.6	70.6	=
overshoot_max_w	86.6	86.6	=
band_crossings_per_h	19.0	19.0	=
grid_p2p_w	24.7	24.7	=
grid_rms_w	256.5	256.5	=
steady_rms_w	14.6	14.6	=
mean_abs_grid_w	57.4	57.4	=
share_imbalance_w	0.0	0.0	=
avoidable_import_wh	30.6	30.6	=
avoidable_export_wh	26.7	26.7	=
cost_regret_ct	0.71	0.71	=
battery_travel_w_per_h	19146.0	19146.0	=

single_venus_steps_slow — settle 41.1→41.1s, overshoot 101.9→101.9W, RMS 14.7→14.7W

Metric	Base	Head	Δ
settle_mean_s	41.1	41.1	=
settle_p95_s	59.3	59.3	=
unsettled_events	0.0	0.0	=
overshoot_mean_w	36.6	36.6	=
overshoot_max_w	101.9	101.9	=
band_crossings_per_h	10.6	10.6	=
grid_p2p_w	78.7	78.7	=
grid_rms_w	323.1	323.1	=
steady_rms_w	14.7	14.7	=
mean_abs_grid_w	84.8	84.8	=
share_imbalance_w	0.0	0.0	=
avoidable_import_wh	44.7	44.7	=
avoidable_export_wh	40.1	40.1	=
cost_regret_ct	1.02	1.02	=
battery_travel_w_per_h	17760.8	17760.8	=

single_venus_trace — settle 0.0→0.0s, overshoot 0.0→0.0W, RMS 274.3→274.3W

Metric	Base	Head	Δ
settle_mean_s	0.0	0.0	=
settle_p95_s	0.0	0.0	=
unsettled_events	0.0	0.0	=
overshoot_mean_w	0.0	0.0	=
overshoot_max_w	0.0	0.0	=
band_crossings_per_h	275.6	275.6	=
grid_p2p_w	712.1	712.1	=
grid_rms_w	274.0	274.0	=
steady_rms_w	274.3	274.3	=
mean_abs_grid_w	119.7	119.7	=
share_imbalance_w	0.0	0.0	=
avoidable_import_wh	74.8	74.8	=
avoidable_export_wh	44.3	44.3	=
cost_regret_ct	1.11	1.11	=
battery_travel_w_per_h	37922.8	37922.8	=

single_venus_washer — settle 0.0→0.0s, overshoot 0.0→0.0W, RMS 59.9→59.9W

Metric	Base	Head	Δ
settle_mean_s	0.0	0.0	=
settle_p95_s	0.0	0.0	=
unsettled_events	0.0	0.0	=
overshoot_mean_w	0.0	0.0	=
overshoot_max_w	0.0	0.0	=
band_crossings_per_h	320.4	320.4	=
grid_p2p_w	188.8	188.8	=
grid_rms_w	59.9	59.9	=
steady_rms_w	59.9	59.9	=
mean_abs_grid_w	40.9	40.9	=
share_imbalance_w	0.0	0.0	=
avoidable_import_wh	12.1	12.1	=
avoidable_export_wh	8.3	8.3	=
cost_regret_ct	0.3	0.3	=
battery_travel_w_per_h	21397.6	21397.6	=

two_venus/eff — settle 17.2→17.2s, overshoot 124.1→124.1W, RMS 14.3→14.3W

Metric	Base	Head	Δ
settle_mean_s	17.2	17.2	=
settle_p95_s	21.7	21.7	=
unsettled_events	0.0	0.0	=
overshoot_mean_w	79.3	79.3	=
overshoot_max_w	124.1	124.1	=
band_crossings_per_h	28.8	28.8	=
grid_p2p_w	24.2	24.2	=
grid_rms_w	210.7	210.7	=
steady_rms_w	14.3	14.3	=
mean_abs_grid_w	39.7	39.7	=
share_imbalance_w	169.4	169.4	=
avoidable_import_wh	22.8	22.8	=
avoidable_export_wh	16.9	16.9	=
cost_regret_ct	0.55	0.55	=
battery_travel_w_per_h	21763.0	21763.0	=

two_venus/fair — settle 17.5→17.5s, overshoot 122.4→122.4W, RMS 14.2→14.2W

Metric	Base	Head	Δ
settle_mean_s	17.5	17.5	=
settle_p95_s	23.6	23.6	=
unsettled_events	0.0	0.0	=
overshoot_mean_w	97.1	97.1	=
overshoot_max_w	122.4	122.4	=
band_crossings_per_h	17.6	17.6	=
grid_p2p_w	22.4	22.4	=
grid_rms_w	207.6	207.6	=
steady_rms_w	14.2	14.2	=
mean_abs_grid_w	38.6	38.6	=
share_imbalance_w	27.2	27.2	=
avoidable_import_wh	21.7	21.7	=
avoidable_export_wh	16.9	16.9	=
cost_regret_ct	0.51	0.51	=
battery_travel_w_per_h	19226.6	19226.6	=

two_venus_noisy/eff — settle 0.0→0.0s, overshoot 0.0→0.0W, RMS 94.2→94.2W

Metric	Base	Head	Δ
settle_mean_s	0.0	0.0	=
settle_p95_s	0.0	0.0	=
unsettled_events	0.0	0.0	=
overshoot_mean_w	0.0	0.0	=
overshoot_max_w	0.0	0.0	=
band_crossings_per_h	2894.0	2894.0	=
grid_p2p_w	292.5	292.5	=
grid_rms_w	94.3	94.3	=
steady_rms_w	94.2	94.2	=
mean_abs_grid_w	79.4	79.4	=
share_imbalance_w	23.7	23.7	=
avoidable_import_wh	45.5	45.5	=
avoidable_export_wh	33.8	33.8	=
cost_regret_ct	1.09	1.09	=
battery_travel_w_per_h	21265.2	21265.2	=

two_venus_noisy/fair — settle 0.0→0.0s, overshoot 0.0→0.0W, RMS 94.0→94.0W

Metric	Base	Head	Δ
settle_mean_s	0.0	0.0	=
settle_p95_s	0.0	0.0	=
unsettled_events	0.0	0.0	=
overshoot_mean_w	0.0	0.0	=
overshoot_max_w	0.0	0.0	=
band_crossings_per_h	2903.2	2903.2	=
grid_p2p_w	292.3	292.3	=
grid_rms_w	94.1	94.1	=
steady_rms_w	94.0	94.0	=
mean_abs_grid_w	79.3	79.3	=
share_imbalance_w	24.1	24.1	=
avoidable_import_wh	45.4	45.4	=
avoidable_export_wh	33.9	33.9	=
cost_regret_ct	1.09	1.09	=
battery_travel_w_per_h	21041.6	21041.6	=

two_venus_slow/fair — settle 41.4→41.4s, overshoot 19.6→19.6W, RMS 14.1→14.1W

Metric	Base	Head	Δ
settle_mean_s	41.4	41.4	=
settle_p95_s	52.7	52.7	=
unsettled_events	0.0	0.0	=
overshoot_mean_w	14.8	14.8	=
overshoot_max_w	19.6	19.6	=
band_crossings_per_h	10.6	10.6	=
grid_p2p_w	73.9	73.9	=
grid_rms_w	305.3	305.3	=
steady_rms_w	14.1	14.1	=
mean_abs_grid_w	80.0	80.0	=
share_imbalance_w	24.3	24.3	=
avoidable_import_wh	41.6	41.6	=
avoidable_export_wh	38.3	38.3	=
cost_regret_ct	0.94	0.94	=
battery_travel_w_per_h	17596.2	17596.2	=

two_venus_solar/eff — settle 25.9→25.9s, overshoot 534.9→534.9W, RMS 20.6→20.6W

Metric	Base	Head	Δ
settle_mean_s	25.9	25.9	=
settle_p95_s	45.7	45.7	=
unsettled_events	1.6	1.6	=
overshoot_mean_w	124.1	124.1	=
overshoot_max_w	534.9	534.9	=
band_crossings_per_h	51.2	51.2	=
grid_p2p_w	58.9	58.9	=
grid_rms_w	218.4	218.4	=
steady_rms_w	20.6	20.6	=
mean_abs_grid_w	48.9	48.9	=
share_imbalance_w	71.4	71.4	=
avoidable_import_wh	36.3	36.3	=
avoidable_export_wh	37.0	37.0	=
cost_regret_ct	0.79	0.79	=
battery_travel_w_per_h	27471.0	27471.0	=

two_venus_solar/fair — settle 25.3→25.3s, overshoot 143.8→143.8W, RMS 20.4→20.4W

Metric	Base	Head	Δ
settle_mean_s	25.3	25.3	=
settle_p95_s	48.6	48.6	=
unsettled_events	1.4	1.4	=
overshoot_mean_w	100.4	100.4	=
overshoot_max_w	143.8	143.8	=
band_crossings_per_h	34.4	34.4	=
grid_p2p_w	59.4	59.4	=
grid_rms_w	214.1	214.1	=
steady_rms_w	20.4	20.4	=
mean_abs_grid_w	47.2	47.2	=
share_imbalance_w	30.6	30.6	=
avoidable_import_wh	34.2	34.2	=
avoidable_export_wh	36.6	36.6	=
cost_regret_ct	0.73	0.73	=
battery_travel_w_per_h	24313.2	24313.2	=

two_venus_trace/eff — settle 0.0→0.0s, overshoot 0.0→0.0W, RMS 285.0→285.0W

Metric	Base	Head	Δ
settle_mean_s	0.0	0.0	=
settle_p95_s	0.0	0.0	=
unsettled_events	0.0	0.0	=
overshoot_mean_w	0.0	0.0	=
overshoot_max_w	0.0	0.0	=
band_crossings_per_h	294.0	294.0	=
grid_p2p_w	784.0	784.0	=
grid_rms_w	283.9	283.9	=
steady_rms_w	285.0	285.0	=
mean_abs_grid_w	125.7	125.7	=
share_imbalance_w	397.5	397.5	=
avoidable_import_wh	74.7	74.7	=
avoidable_export_wh	51.0	51.0	=
cost_regret_ct	1.84	1.84	=
battery_travel_w_per_h	56639.6	56639.6	=

two_venus_trace/fair — settle 0.0→0.0s, overshoot 0.0→0.0W, RMS 284.8→284.8W

Metric	Base	Head	Δ
settle_mean_s	0.0	0.0	=
settle_p95_s	0.0	0.0	=
unsettled_events	0.0	0.0	=
overshoot_mean_w	0.0	0.0	=
overshoot_max_w	0.0	0.0	=
band_crossings_per_h	288.0	288.0	=
grid_p2p_w	772.4	772.4	=
grid_rms_w	283.7	283.7	=
steady_rms_w	284.8	284.8	=
mean_abs_grid_w	125.1	125.1	=
share_imbalance_w	31.1	31.1	=
avoidable_import_wh	74.3	74.3	=
avoidable_export_wh	50.8	50.8	=
cost_regret_ct	1.82	1.82	=
battery_travel_w_per_h	54480.2	54480.2	=

venus_d_plus_c/eff — settle 17.2→17.2s, overshoot 122.0→122.0W, RMS 14.3→14.3W

Metric	Base	Head	Δ
settle_mean_s	17.2	17.2	=
settle_p95_s	21.7	21.7	=
unsettled_events	0.0	0.0	=
overshoot_mean_w	79.2	79.2	=
overshoot_max_w	122.0	122.0	=
band_crossings_per_h	28.4	28.4	=
grid_p2p_w	24.2	24.2	=
grid_rms_w	210.7	210.7	=
steady_rms_w	14.3	14.3	=
mean_abs_grid_w	39.8	39.8	=
share_imbalance_w	169.9	169.9	=
avoidable_import_wh	22.9	22.9	=
avoidable_export_wh	16.9	16.9	=
cost_regret_ct	0.55	0.55	=
battery_travel_w_per_h	21789.8	21789.8	=

venus_d_plus_c/fair — settle 17.5→17.5s, overshoot 122.4→122.4W, RMS 14.2→14.2W

Metric	Base	Head	Δ
settle_mean_s	17.5	17.5	=
settle_p95_s	23.6	23.6	=
unsettled_events	0.0	0.0	=
overshoot_mean_w	97.1	97.1	=
overshoot_max_w	122.4	122.4	=
band_crossings_per_h	17.6	17.6	=
grid_p2p_w	22.4	22.4	=
grid_rms_w	207.6	207.6	=
steady_rms_w	14.2	14.2	=
mean_abs_grid_w	38.6	38.6	=
share_imbalance_w	27.2	27.2	=
avoidable_import_wh	21.7	21.7	=
avoidable_export_wh	16.9	16.9	=
cost_regret_ct	0.51	0.51	=
battery_travel_w_per_h	19226.6	19226.6	=

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Actionable comments posted: 2

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Inline comments:
In `@CHANGELOG.md`:
- Line 5: Update the existing changelog bullet describing zero distribution
weights and parked batteries to append the PR reference for `#646`, linking to the
specified GitHub pull request URL.

In `@src/astrameter/ct002/balancer.py`:
- Around line 1868-1869: Clear the active probe state before returning a parked
target when the consumer is a probe participant: update _probe_state in the
Python balancer condition at src/astrameter/ct002/balancer.py lines 1868-1869,
and probe_state_ in the equivalent C++ condition at
esphome/components/ct002/balancer.cpp lines 1062-1063. Add regression cases
covering parking and restoring an active probe candidate before its deadline in
tests/test_balancer_distribution_weight.py lines 109-130 and
tests/components/ct002/host_balancer_test.cpp lines 234-260.

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