Prediction Held up
Vijendran: Central space solar beam will likely reach 200 watts per square meter
“Part of the beam, especially the central part of the beam, will likely be exceeding safety limits up to perhaps a couple of hundred watts per square meter.”
Assertion Supported
Vijendran: Full space solar system costs fell from $100B to $1B–$10B
“What was a hundred billion before, now you're looking at one to ten billion for a full system, depending on, on the scale you're looking at.”
Opinion
Vijendran: Space solar beats fusion with instant zero-loss global power transmission
“Space-based solar power has all of the benefits of fusion, and some, because it can move power from one place to another place that is underneath the satellite essentially instantly over vast geographic regions without any loss, and even, you know, nuclear fus…”
Assertion Supported
Vijendran: Space solar becomes economically viable below $1,000 per kilo launch costs
“The cost benefit studies for space-based solar power have shown in the past that once you get to cost below A thousand dollars or a thousand euros per kilo to low Earth orbit, then you're getting into the ballpark where this could be economically viable.”
Prediction Not checkable as stated
Vijendran: Starship could reduce low Earth orbit launch costs to hundreds per kilo
“Potentially, if something like Starship or the equivalent really works out as planned, we could get to the mid-hundreds or low-hundreds or even less per kilo to low Earth orbit.”
Assertion Supported
Vijendran: Mass production has reduced satellite hardware costs to ~$1,000/kg
“Mass production. Techniques to build space hardware, and that's brought the cost of space hardware down to of the order of thousand dollars or so per kilogram as well from where it used to be in order to magnitudes higher.”
Assertion Supported
China announces plans for gigawatt-scale space solar by 2050
“China has also in the last five years made announcements towards putting gigawatt scale Space-based solar power systems into orbit by 20 50 with demonstrations planned later this decade.”
Opinion
Vijendran: Space solar is the only promising clean energy receiving almost no investment
“Peculiarly, space-based solar power is the, Only really promising form of clean energy, potential form of clean energy technology that I would argue the world is not investing in significantly because every other energy source that you can think of, whether it…”
Insight
Vijendran: Space Solar Solves Intermittency Without Requiring Storage
“With space-based solar power. This is really offering you a weather independent, 24 seven source of clean power. That's coming from an inexhaustible resource. And you basically solve the problem of intermittency without the need for storage.”
Insight
Vijendran: Space Solar Grants Equal Energy Access Regardless of Geography
“Any country, no matter where you are on the planet, as long as you have the technology to be able to put these collecting systems up in space and can put the receivers down on the ground, you know, where you need them, then you have access to this resource ess…”
Assertion Partly supported
Vijendran: Space solar physics is proven by 60 years of telecom satellites
“From a physics perspective in terms of what is exactly happening, going from sunlight all the way to electricity into the grid, every step along the way is something that we know how to do from a physics point of view. And we've been doing it already for 60 ye…”
Prediction Not checkable as stated
Vijendran: Terrestrial power beaming will create building blocks for space solar
“There's going to be a commercial market for power beaming technology terrestrially, and the technologies needed to make that happen will be basically the building blocks that we'll use for space power beaming once it's scaled up to a larger scale.”
Assertion Supported
Vijendran: Japan and US AFRL plan orbital power beaming demos in 2025
“And I think this is what is being planned by a number of people in 20, 25 timeframe, including the Japanese space agency the U S military, the air force research laboratory has a program that intends to put a demonstrator in orbit as well in that timeframe and…”
Prediction Open · timeframe Aug 2033
Vijendran: Commercial space solar will take at least a decade with moonshot funding
“We're talking about a decade. Probably at the minimum, if there's a real push to make this happen, a moonshot like approach, putting a substantial amount of funding over that amount of time to do the R and D as well as the demos that you have to do along the w…”
Assertion Supported
Vijendran: Space solar antennas must measure hundreds of meters to kilometers
“If you want to have a receiver that is of a reasonable size on the ground, that's not too large. Let's say a few kilometers in diameter, then you still need to have a, an antenna in space that is one to two kilometers in diameter, depending on the frequency, b…”
Assertion Supported
JPL and Raytheon beamed 30 kilowatts over one kilometer in the 1970s
“The Jet Propulsion Laboratory and Raytheon company in the 19 seventies in California, they did an experiment where they sent 30 kilowatts of power across a distance of over a kilometer and collected a lot of that power.”
Assertion Supported
Vijendran: Space solar beaming uses frequencies similar to Wi-Fi and mobile networks
“These intensity levels will be below the regulations and limits for such use of radio frequencies, which exists because we have these frequencies we use are similar to wifi and mobile phone systems.”
Assertion Partly supported
Vijendran: Reusable rockets have cut launch costs nearly two orders of magnitude
“This generation of reusable launches has already brought costs down by almost a couple of orders of magnitude from where they were. With the space shuttle, for example”
Assertion Supported
Vijendran: ISS is humanity's largest space structure at 100 meters
“The largest thing any, anyone's ever put into space, humanity's put into space is the international space station. And that's only a hundred meters across.”
