Earth-Moon L1

First point:

Continuous solar power at Malapert is not that
valuable.

The problem with solar power is that PV conversion
efficiency is only about 20% efficient, for rather
high priced PV cells. Plus PV cells are rather heavy
to ship from Earth and soft land on luna, rather
expensive to do.

A rectenna, on the other hand, is lightweight and has
a conversion efficiency of over 90%.

Soft landing hardware on to the Moon is very
expensive.

Let us assume a PV array is 10 times heavier per watt
than a rectenna.

That means we can get 5*10 = 50 times as much power
per kilogram for a rectenna than for a PV array.
That means a rectenna will be be at least 50 times
cheaper per watt of useful power than PV array at
Malapert. I say "at least" because the manufacturing
cost of a rectenna will be much cheaper than for PV
array.

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Second point:

I am not particularly interested in subsistence level
"living off the land" on luna or anywhere else.
I am interested in breaking open the vast resources of
the high frontier.

That means solar power satellites beaming power to
Earth as the primary economic power house for space
development.

That means an SPS demonstrator at L-1 is top priority.

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SPS makes lunar development cheaper, and it opens a
vast energy market for Earth.

A win-win scenario.