Energy Aperture

Value chain · CLM-0408

In plain terms

If the hardware lasted the full 30-year mission without needing to be replaced twice, the electricity cost would fall by almost half, on its own.

The claim as recorded

Extending RD1's hardware lifetime from 10 to 30 years (eliminating both refurbishment cycles, reducing total production from 3 batches to 1) reduces this model's LCOE from 0.623 to 0.330 USD/kWh, a 47% reduction, without changing launch cost, learning rate, or any other input.

T0 own calculation · high confidence · as of 2026-09 · VER-248 CONFIRMED 2026-09-03 · XC02

Scope and limits

Does not address whether a 30-year hardware lifetime for continuously-operating GEO power hardware, three times the report's own 10-year baseline assumption, is achievable; the report states today's GEO hardware baselines to 15 years (printed p.74), itself an ASSUMED-optimistic figure relative to SBSP's harsher duty cycle.

What it assumes

Hardware lifetime changes both maintenance launch count and the number of units fed into the manufacturing learning-curve formula, correctly propagated together (not two independent free parameters); module learning rate held fixed across this test.

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: hardware lifetime rows, 10/15/20/30 yr -> 0.6231/0.4771/0.4570/0.3302 $/kWh.

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

Related records
Answers question
QST-038 not published in this release
Supersedes
CLM-0252 not published in this release

Cite this

energyaperture.com/c/clm-0408

CLM-0408, Energy Aperture, as of 2026-09.

Connected records

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

Also from SRC-012
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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.