User, 17 Oct 2026: "only put solar on the factory, prepare the other
buildings for solar, option a and b should operate on biomass".
- Steam: two 500 kg/h biomass modules (Getabec class, 6M to 10M THB) plus
a fuel store and handling block (1M to 2M, estimate) in both plans; the
electric bank becomes the alternative. ~0.67M THB of fuel a year against
~4.9M for electric steam; grid demand ~264 kW instead of ~980 kW.
- Solar: ~520 kWp on the factory roof (the biomass-case optimum is ~500 to
550 kWp, hourly sketch in sustainability.md "PV size with biomass
steam"); office roof and parking canopies built PV-ready (~120 kWp
later). ~87 % used on site, ~61 % of the plant's electricity.
- Calculator: biomass default, bFuel row, pvKWp 520, pvSelf 87, iso fills
the factory roof first and shows the other roofs as PV-ready.
- Numbers: launch plant ~168M / 232M / 296M with contingency; Plan A
~182M (~2M above 180M: the Chinese-route lever priced only electric
boilers; a Chinese biomass quote is the way back), Plan B ~217M (label
~215M), ~35M more. Calculator EBITDA A 2.17M, B 2.23M USD.
- CSV, total-investment, revenue-model, sustainability, scale, biomass,
site-candidates, boi, steam-cooling, construction RFQ (canopies
PV-ready), README, roadmap; business plan draft 0.3 rebuilt (A and B
63 pages) with new renders.
Solar (user, 17 Oct 2026: "use as much roof space as possible")
- PV on every roof and canopy: ~640 kWp on the Payap scenario plot
(factory roof ~523, canopies ~54, flat office roof ~65 kWp around the
AC units); ~300 kWp on the Mueang Chi hall. Calculator: pvKWp 640,
new pvSelf 85 % (zero export, hourly sketch), PV cost per kWp times the
array, office-roof PV in the iso view, roofs drawn full.
- 12.8M to 16.6M THB at 20 to 26 THB/W; CSV baseline 34.37M to 56.34M;
launch plant ~168M / 231M / 294M THB with contingency; Plan B ~216M
(label ~215M), ~39M above Plan A; Plan A unchanged (it leases the
array), its solar lever ~17.5M. PV payback ~4.2 to 5.9 years.
- Permits (rooftop solar no factory licence since 28 Dec 2024, ERC
exemption under 1,000 kVA, PEA zero export) and PPA discounts sourced
in sustainability.md.
BOI correction
- Announcement 3/2568 (in force 1 July 2025) ended BOI promotion for
solar installations; only the battery may qualify (12M THB per MW cap).
Removed the "BOI solar measure" from boi.md, total-investment,
revenue-model, sustainability, site-candidates and both plan versions;
Plan B's case for owning the array is the PPA bill it avoids
(~0.07M USD a year).
Open source (user, 17 Oct 2026)
- digital-factory.md "Open source throughout, and working with other
plants": everything we run and build is open source on NixOS, our code
published (licence to decide), vendor firmware the stated exception;
later the stack and factory-automation services for other pressing
plants, not in the revenue.
- Business plan section 5.6 plus an executive-summary bullet, reading
guide and not-modelled mentions; draft 0.3 rebuilt (A 60, B 61 pages),
renders re-made with the roofs full.
- Rooftop PV, 300 kWp (size still illustrative): 20 to 26 THB/W installed
with the Deye hybrid inverters, 6.0M to 7.8M THB (was 25 to 35 THB/W,
7.5M to 10.5M). Sources in the utilities CSV: DEDE Thailand PV Status
report (Mahidol survey: 22 to 25 THB/W for factory systems of 10 kW to
1 MW, 2023), CapSolar 2026 (20 to 25 under 1 MWp), Saimai Solar's list
(300 kW for 5.4M THB), Deye hybrid inverter retail (160,500 THB per
50 kW).
- Battery 271 kWh, now installed: 2.0M to 3.5M THB (was the bare Gobel
list price, 1.4M to 2.0M, which matches DEDE's 5,000 to 7,000 THB/kWh
for LiFePO4); adds enclosure, fire protection, controls and installation,
below CapSolar's 12,000 to 15,000 THB/kWh for a fully installed factory
BESS because the hybrid inverters do the conversion (estimate).
- Utilities baseline 27.57M to 47.50M THB; launch plant ~160M / 222M /
283M THB with contingency; Plan B ~208M (~149M to 266M), ~31M more than
Plan A; Plan A's total unchanged, its solar lever ~9.7M. PV payback
~3.8 to 5.4 years (sustainability.md). Calculator, README, roadmap,
revenue model and both business plan versions (renders included)
updated.
- Plan B now starts like Plan A with one Duplex system and one Classic,
but takes none of the six levers: owned solar and battery (with the BOI
solar measure), the full metrology stack, the visitor corridor, cassette
and CD-R, the bought crane and Thai-supplied utilities (user, 17 October
2026). ~193.8M THB before the reserve, ~209M with it (~150M to 268M),
~32M (~18 %) more than Plan A; the second Duplex is a growth step from
revenue in both (~15.4M THB, estimate).
- total-investment.md "Two plans" re-based (heading and anchor now
"B at ~210M THB", README and roadmap links updated); revenue-model.md
operating pictures: same volume and EBITDA as Plan A, depreciation on
Plan B's capital (operating profit 1.26M USD central, payback ~3.7 yr);
the extra earns nothing in the modelled table, which the docs say.
- Calculator: Plan B preset = the launch plant with contingency kept out
(EBITDA 2.07M USD, cash payback year ~4.3, IRR ~21 %); budget card marks
180M and 180M plus 25 %; preset label "Plan B (~210M, all in)".
- Business plan draft 0.3, both versions rebuilt: every Plan B branch of
the three content files rewritten; renders regenerated with the
isometric view turned to the front of the site (road, car park, office,
corridor facade) for the cover and Figures 8 to 10.
- One build makes both documents: plan_variant.py switches the
plan-specific text (pick / is_a / label); build_plan.py writes
CNX-Vinyl-Business-Plan-A and -B (docx), export_pdf.py exports both PDFs
with the table of contents filled in. Draft 0.2 (single launch-plant
plan with contingency) is removed; it stays in the history.
- Plan A: the launch plant with every machine and six cost levers, ~177M
THB with the ramp-up reserve, no contingency. Plan B: the second Duplex
at launch, five presses, ~224M THB on the same basis. Each version reads
as a complete plan with one table comparing it with the other; the
216M investor-question text is gone, Pheenix is priced at OMS's
reference plus 20 %.
- Calculator renders in both documents, each from its own preset: the
plant at a glance (Figure 4), the budget check (Figure 5) and ten years
of cash (Figure 6), in docs/renders/calculator/.
- Calculator budget card: the verdict and third KPI now name the tightest
budget the midpoint fits (Plan A: 3.3M to spare under 180M; Plan B:
0.8M under 225M) instead of always 225M.
- Fixes: CD replication cross-references point to section 4.10; the
blended price in section 3.3 and roadmap item 1 is 3.76 to 5.27 USD at
60 % specials (3.50 to 4.60 at a standard-heavy mix).
grabowski
