The year is the commute

Versus the gas they already burn

Silicon already won wall-outlet electricity. The only honest fight is against the boiler on the other side of the fence. Cheap Texas gas still wins a fuel-only brawl. This plant is a fuel hedge with a tank.

How we got the acres

1. 01

   Sun

   2133 kWh/m²

   West Texas dumps about 2133 kilowatt-hours of direct beam onto each square meter of sky, over a year. Clouds and winter are already in that number. That is the fuel. Noon is not.

2. 02

   Dirt

   2.6 acres

   Mirrors cannot tile 100% of the lot — they shade each other. We pack 45%, so 4800 m² of glass sits on 2.6 acres (2.0 football fields).

3. 03

   Kept

   35.8%

   Glass is not a black hole. Dirt, bad angles, short winter days, and heat leaking off the pipe eat most of it. This typical year keeps 35.8% as useful hot oil. If the real year is 22%, buy about 4.3 acres instead.

4. 04

   Haul

   3665 MWh

   4800 m² × 764 kWh/m² = 3665 MWh of heat the factory can actually use. That is the commute. Noon 2.05 MW is a sports-car top speed.

5. 05

   Night

   138 t

   The tank is the product. The mirrors just refill it. Oil mass is noon power × hours stored, divided by how much heat a kilogram can hold between 250 and 390 °C.

Heat by month

August is fat. January is a corpse. If a customer needs the same heat every month, you buy extra tank and extra field — or they keep a gas boiler as backup.

The math, written down

Same plant, two languages. Left is the sentence. Right is what the lab writes on the board.

1. C_g = A_c / A_r = 40 / 0.80 = 50
2. C_flux(x,y) = q''(x,y) / DNI ≠ C_g
3. Q_h = DNI_h · A_c · η_opt · η_th
4. η_opt = 0.92 · clean · IAM_T^1.18 · IAM_L · 0.86
5. clean = mean_d (0.99 − ṡ d) over the wash cycle
6. η_th = max(0.45, 0.82 − 0.0004(T − 250) − 0.004 v)
7. m_oil = P_noon · t_store / (c_p ΔT)
8. LCOH = (CRF · CAPEX + OPEX) / Q_year
9. CRF = 0.0872 (20 yr, 6% real)

Today this run keeps 35.8% of the beam as heat, glass cleanliness averages 96%, thermal efficiency 78%.

Drive the year

Stuff you actually buy

Good enough to know if this is pickup trucks or freight trains. The tanks are the product. The mirrors just refill them.

• Mirrors4800 m² · ~48 t glass2 trucks
• Steel frames~58 t racks and posts3 trucks
• CPC / secondary960 m of rail120 pods
• Receiver tiles960 m of tube, swap cartridgesthe part that evolves
• Thermal oil~138 t · ~172 m³6 trucks
• Two tanksHot + cold, insulated, nitrogen, drip panshop-built tanks
• Trackers + dump120 drives, hardware tripif tracking dies, dump
• Fence + dump plateNobody walks through a focused beamthe boring safety that ships

Still owed

1. M4

   Add up a real year. Clouds, winter, 6 a.m., dirty glass. Acres come from that, not from noon kilowatts.

2. Dust

   West Texas is not a laboratory. How often do you wash the glass, and who drives the truck.

3. Pipes

   Hot oil in a long pipe heats the breeze. Night cool-down is real.

4. Oil

   390 °C oil does not stay new. Budget a change-out, not eternal fluid.

5. Stripe

   The middle of the pipe is hotter than the average. Coke lives there.

6. $

   Steam at a flange, at a time of day, at a price. Compare to the gas they already burn — not to silicon.

Next 90 days

1. Week 1–2

   Pick the factory

   A temperature, daily hours of heat, a Texas county. 180 °C food is a different machine than 350 °C chemicals.

2. Week 2–4

   Trust this year

   Print kilowatt-hours per month. If August is fat and January is a corpse, say so in public.

3. Week 3–6

   Close G0 on 2 m²

   Buy instruments that can actually see a 5% error. If the meter is ruder than that, do not buy it.

4. Week 5–8

   One customer flange

   Steam or oil-to-oil. Pressure. Temperature. Dump-to-tank on a Friday afternoon.

5. Week 6–10

   Materials RFQ

   Mirror dollars per square meter, rack steel, oil, tank, tracker. Then a 20-year number with a wash crew.

6. Week 8–12

   Kill two fantasies

   Magic antennas stay a research toy. Beating rooftop panels at wall-outlet electricity stays off this site.