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.
Checked October 2026 on the investor's budget question. New
docs/suppliers/china-utilities.md: boiler makers (ZOZEN, Sitong,
Fangkuai, Taiguo, Yuanda, Yongxing, Taishan, Nobeth) with fit for 500
kg/h at 1.25 MPa, claimed certificates, Thai references and listing
prices; the Thai rules for an imported boiler (MR and MOI notification
B.E. 2549: ASME/JIS/EN or equivalent, certification-body verification,
once-through relief does not reach 10.5 bar, licensed controller, annual
inspection); compressor makers with Thai offices (Kaishan, Denair) and
sizing; hydraulic pump sets and accumulators (Huade, Yuci, Hengli, WMD,
Renowell, Inovance, NXQ makers), the shared-ring-main risks and Thai HPU
builders; duty and freight; open RFQs.
Result: about 2M THB at the midpoint (~2.5M with contingency), ~1 % of
the 216M target, mostly the boilers; Newbilt aggregates stay Newbilt's.
total-investment notes it and lists the uncosted central hydraulic
plant; utilities CSV gets the Chinese candidates and route estimates;
backlinks from equipment-suppliers, pressing-line, README.
Decided (user, October 2026): the plant launches with everything in one
capital round, commissioned in sequence: one Newbilt Duplex system, one
Classic, a Pheenix galvanics line with ZLD water, the Sibert line, a
Sillitoe cutting room, and the modular steam and cooling plant (2 x 500
kg/h boilers, 2 x 250 kW chillers, rooms for four each). No bridge
stampers, no outsourced cutting; cassette and CD-R stay; the second
Duplex and further Classics are growth options, not in the investment.
total-investment.md: new 'Launch plant' roll-up, 4.9M to 8.9M USD,
161M to 292M THB incl. 15 % contingency (midpoint ~227M), with what is
left out (ramp-up reserve ~10-20M THB, CD replication, financing, FX,
archive shelving) and the BOI assumption. The investor's question (180M
THB, maybe +20 % = 216M): fits at the low end only; at the midpoint four
levers that keep every machine (solar via PPA, metrology launch tier,
galvanics near OMS's reference, visitor corridor later) give ~193M, plus
reserve ~203-213M, inside 216M; 180M needs low quotes. The quotes that
decide it: Newbilt (Duplex, Classic), Pheenix galvanics, building with
soil test, metrology. Old full vision and phased entry marked superseded
until the mirrors are re-based.
Utilities CSV: chiller bank two modules (4.9-7.9M THB), boiler note for
B-1 and B-2 at launch, ZLD and DI rows now launch scope (carried with
galvanics); baseline 28.47M-48.73M THB. README project status.
Added at the user's request (October 2026): LPI Rack Range (Thailand)
Corp., Ltd., Bangkok head office, plants in Bangplee Industrial Estate
and Bangpla (Samut Prakan); office mobile shelving for documents, pallet
racking (selective, drive-in, mobile, shuttle, pallet flow), picking
shelves and mezzanines, mould-and-die racking, mini-load AS/RS; no specs
or prices published (lpi.co.th, checked October 2026).
equipment-suppliers.md section 8 entry; the Thai supplier the archive
shelving is quoted against (facility-security.md open points, supplier
map archive line); racking candidate in the utilities CSV.
New page docs/steam-cooling.html (site /demos/steam-cooling/): the
utility plant as a clickable process diagram. Steam side: raw water,
softener and dosing, feed tank with heat-pump feedwater recovery, feed
pumps, a bank of two 500 kg/h boilers (third for N+1 as an option),
separator and metering, optional accumulator, blowdown, the 10 bar
header with a valved, metered branch and trap per press, drip legs and
condensate return. Cooling side: Newbilt's press outlets are open (max.
2 bar), so returns drain to a warm tank, pass the heat pump, an optional
dry cooler and a plate heat exchanger to a cold buffer tank, and VFD
pumps feed the 20 to 25 C header at ~10 bar to every press, the
extruders and the central hydraulic oil cooler; the chiller loop
(three 250 kW air-cooled modules at 40 C ambient, fourth as option) stays
closed and clean. Galvanics cooling (12 to 20 C) is a separate circuit.
Operating cases (launch, Duplex system 1, five presses, one module down)
show demand against installed capacity; design basis with sources,
equipment schedule, RFQ questions. Static SVG, no per-frame work.
Design basis at Newbilt's per-machine figures: steam 750 to 900 kg/h,
cooling 652.5 kW (625 presses, 15 extruders, 12.5 hydraulics), 305 to
540 l/min circulating. Also found: Newbilt's 53 l/min at ~60 C out is
~140 kW, above its 125 kW peak; listed as a re-quote question.
Re-based in the same commit:
- scale.md: electrical table (chiller bank ~210 to 325 kW electrical,
plant peak ~430 to 700 kW, ~950 to 1,330 kW with electric steam),
grid 800 to 1,000 kVA (1,250 to 1,600 with electric steam, Schedule
4 past 1,000 kW), tariff 4.5M to 6.8M THB/yr, battery ~1 h of chiller
peak, boiler and chiller banks, biomass up to ~550 t/yr at 1.5 M
records, utilities money line.
- sustainability.md, biomass.md: same figures; electric steam 5.2M to
6.0M THB/yr mature, 1.6M to 1.8M early; fuel saving 4.0M to 5.4M.
- utilities CSV: boiler bank, chiller bank with HX and tanks, softener
and loop treatment re-sized; baseline 23.98M-41.63M -> 30.07M-51.33M.
- total-investment.md: re-size as an added-scope row (+185k / +294k
USD); headline 4.7M to 8.9M unchanged until the investment re-base.
- pressing-line, equipment-suppliers, facility-security, fleet
calculator (boiler 1000 kg/h, chiller 750 kW), plant page detail
texts; README, landing page, build.sh.
PEA tariff schedule (May 2023 onward, still current) filed under
docs/finance/pea/; Ft 0.1623 THB/kWh for Sep-Dec 2026 from the PEA Ft page.
The plant falls under Schedule 3.2.2 (Medium General Service, TOU, 22 kV).
New section in sustainability.md: blended ~3.81 THB/kWh for two-shift
production plus 132.93 THB/kW demand charge; electric steam ~4.7M-5.5M
THB/yr at maturity against ~0.35M-0.8M of biomass fuel; self-consumed PV
worth ~3.7 THB/kWh (~4.5-7 yr payback); solar thermal not recommended;
the battery earns little from TOU arbitrage or peak shaving. biomass.md,
scale.md, the utilities CSV note and the README follow.
Steam, compressed air, cooling, water treatment, racking, HVAC, solar EPC
and BESS; baseline total 23.98M-41.63M THB, options priced separately;
all figures budgetary +/- 30%, basis marked per row
grabowski