Energy Aperture

Value chain · CLM-0410

In plain terms

Switching from chemical rockets that need refuelling to electric thrusters that do not would cut the electricity cost by about two-thirds, matching what NASA itself found.

The claim as recorded

Removing chemical-propellant refuel launches by assuming electric orbital transfer (12:1 refuel ratio -> 0, with a correlated +17.2% system mass penalty for propulsion hardware, matching the report's own treatment) reduces this model's RD1 LCOE from 0.623 to 0.207 USD/kWh, a 67% reduction, closely matching the report's own reported 62-69% saving for this scenario.

T0 own calculation · medium confidence · as of 2026-09 · VER-250 CONFIRMED 2026-09-03 · XC02

Scope and limits

Does not model the report's own noted trade-off that electric transfer takes about four months instead of one, which could affect financing-cost timing at higher discount rates; not tested here.

What it assumes

Refuel-ratio removal and the +17.2% mass penalty are varied together, never independently, because they are two consequences of the same propulsion-architecture choice (correlation handled per this task's own instruction).

Where it comes from

SRC-012 Space Based Solar Power., 2024

This is the project's own working, shown in full:

CALC-056 One-lever-at-a-time sensitivity sweep
Trace, Section 7: electric propulsion scenario -> LCOE 0.2069 $/kWh, |delta| 0.4162 from 0.6231 baseline; SRC-012 printed p.74 (PDF p.91): "62% total cost savings for the Innovative Heliostat Swarm".

Basis: FY2022 USD, nominal; discount rate 3%; RD1

Related records
Answers question
QST-004 not published in this release
Supersedes
CLM-0254 not published in this release

Cite this

energyaperture.com/c/clm-0410

CLM-0410, Energy Aperture, as of 2026-09.

Connected records

Other published records linked to this one. A list, not a judgement.

Also from SRC-012
CLM-0006None of the five main studies mentions the international radio-frequency exposure limits, or any safety standard, or a restricted area...
CLM-0123NASA's own 2024 study puts space solar power at 12 to 80 times the cost it expects in 2050 from power stations on the ground, a set it...
CLM-0124NASA also found that if several things improve at once, rather than just one, space solar power does become cost competitive.
CLM-0125On carbon, NASA found space solar power within the range of five renewable ways of making power on the ground (wind, solar, solar thermal...
CLM-0144A NASA study found that launching everything into space is by far the biggest cost of a space solar power system, and that most of those...
CLM-0192The full list of assumptions behind the headline result of NASA's 2024 study, that space solar power would cost far more than ground...
CLM-0193To get to a competitive cost, NASA's own 2024 analysis needs launch costs to halve, solar cells to get much more efficient, satellites to...
CLM-0240A from-scratch cost model of the "Innovative Heliostat Swarm" design gets almost the same electricity cost as NASA's own study: about 62...
More on the source page.