The number was previously labelled 'total solar surplus' which read like
'total PV produced'. It's actually 'capturable surplus' = the kWh that
would be exported to the grid without a battery, which is less than gross
PV by the directly-self-consumed portion (PV used at the same hour it's
produced never crosses the meter).
For dad's 3 kWp setup: PV produced ≈ 2625 kWh, directly consumed ≈ 750
kWh, exported ≈ 1869 kWh. The battery can only redirect the 1869,
because the 750 doesn't cross the meter.
Renamed heading + extended legend with the explanation.
New columns:
- kWh capt: absolute kWh of solar surplus the battery absorbed
- % capt: that, as a % of total available surplus for the scenario
- % full: of all surplus hours, the % when the battery was already full
- % sat: of all surplus hours, the % when charging was at max kW
The leaderboard heading also shows total scenario surplus in kWh/yr so
the percentages have a denominator.
These make the limits visible: e.g. on dad's data, an 0.8 kW plug-in is
saturated 19% of surplus hours, while a 2.5 kW unit is never saturated
(0%) — but both end up bottlenecked by 'battery full' on multi-day sunny
stretches when demand can't drain it overnight.
Removed: Store €/yr, Store yr, ×over columns. The store_calc module is
still in the codebase and the API still returns the values; the columns
are just not displayed since dad isn't shopping based on the dishonest
quote.
- scripts/import_dad_p1.py converts his 15-min cumulative meter dump
(~/Downloads/P1e-2025-1-1-2026-1-1.csv) into our hourly format.
Net of PV exports — power_w can be negative on surplus hours.
Aligned to our 2023-09 → 2024-09 window by (month, day, hour) so
prices and irradiance stay seasonally matched.
- data/raw/p1_hourly.csv is now dad's data; ours preserved as
p1_hourly_michiel.csv for diff/comparison.
- LP gE upper bound was 'pv[t]'; now max(0, pv − demand). This was
wrong before but invisible because demand was always positive; with
dad's net data demand goes negative and the LP went infeasible.
- New 'Export rate' field in Advanced. Override saldering toggle with
a literal €/kWh — set to −0.106 for terugleveringskosten.
Single sync worker means a slow request to / (compute_leaderboard, ~17s
on dev / longer on h4a's compact CPU slice) blocks every other request,
including the /healthz probe. With 2 worker processes and 4 threads
each, slow requests on / no longer wedge the gunicorn queue, and
/healthz responds promptly even while a /api/calculate is in flight.
- Backend: every row now carries ten_year_profit_eur =
year1 × cumulative inflation factor − battery cost. Negative for
batteries that don't pay back within 10 years (the Powerwall).
- New column shows green for positive net, red for negative.
- Every column header is now clickable: click to sort, click again to
toggle direction. Sort indicator (↑/↓) on the active header.
- Sort + filter selections persist in localStorage independently.
- Default sort stays 'LP yr ascending' (best payback first), but a
single click on '10-yr net' flips to absolute lifetime profit and
larger batteries surface to the top.
- Synthesised one hybrid entry (Tesla Powerwall 3, installed price €9500)
appended to the catalog. Tagged installation: hybrid; LP runs with
allows_export=True for those.
- Replaced single 'plug-in only' checkbox with three category filters:
≤0.8 kW plug-in, ≤2.5 kW plug-in, Hybrid/DC-coupled. Default: all on.
Filter selection persists in localStorage.
- API now tags every row with a category so the JS can filter without
re-fetching. SSR rows carry data-category for first-paint filtering.
- Store quote left blank for hybrids since thuisbatterijgids.net only
models plug-in arithmetic.
- ProcessPoolExecutor with fork context: 4 workers each inherit the
scenario df via copy-on-write. linprog/HiGHS doesn't release the GIL
so threads were useless; processes get clean ~3.5× speedup.
- Cross-scenario LP cache keyed on everything the LP depends on
(demand, retail, PV size, saldering, η_rt) but NOT inflation or cost.
Result: tweaking just inflation re-uses every LP — sub-100ms.
Cold cold scenario went 75s → 17s; inflation tweak went 17s → 10ms.
- Checkbox 'plug-in only (≤ 0.8 kW, no electrician)' filters the leaderboard
client-side and re-picks the top recommendation from visible rows.
Filter state is persisted in localStorage.
- scripts/deploy.sh: idempotent rsync + systemd setup against the
'thuisbatterij' SSH alias. Run after provisioning the h4a workload.
- Hourly data exporter (InfluxDB → CSV) for prices, P1, irradiance.
- LP-based 24h-foresight oracle dispatch with SoC-consistent state engine.
- Reverse-engineered thuisbatterijgids.nl formula (matches their quotes
to within €0.50 across three battery configs).
- Catalog scraper for the 52 batteries on thuisbatterijgids.net via their
/wp-json REST endpoint.
- Web app (Flask) that ranks every catalog battery by honest payback and
contrasts with the store's quote, deployable via the included Procfile.
