NASA will hold a press conference on October 20 previewing two spacewalks that will complete the International Space Station's solar power augmentation. The walks — numbered US 100 and US 101 — are scheduled for October 29 and November 5 respectively, with astronauts Anil Menon (NASA) and Joshua Kutryk (CSA) performing both. The task is straightforward hardware installation: two International Space Station Roll-Out Solar Arrays (IROSAs), the seventh and eighth of the series, on the 2A and 3B electrical power channels. Once complete, the station's total electric power generation capacity rises from 160 kilowatts to approximately 215 kilowatts — a 30% increase over the legacy system. What makes this more than routine maintenance is the stated purpose. NASA explicitly ties the additional power to supporting "critical station operations, including its safe and controlled deorbit." This is infrastructure built not for expansion but for an orderly shutdown. The station needs reliable power through its final years, and the original arrays — some dating to the early 2000s — are degrading. The IROSA program itself is a case study in incremental generativity. Rather than replacing the entire power truss, NASA designed roll-out arrays that deploy over the existing degraded panels. Six are already installed. The final two complete the set. The engineering is unglamorous but effective — a retrofit that extends the useful life of a $150 billion asset without requiring a new structure. Gaurang Patel (operations integration manager, Low Earth Orbit Program) and Garrett Hehn (spacewalk flight director) will brief media. The walks will be the 285th and 286th conducted in support of ISS assembly, maintenance, and upgrades — a number that speaks to the cumulative infrastructure investment in low Earth orbit. The broader context is the transition from ISS to commercial LEO stations. Every dollar and kilowatt-hour spent keeping ISS operational through deorbit is a dollar not spent on successors. But the alternative — letting the power system degrade and risking uncontrolled systems failures — would be far costlier and more dangerous. This is maintenance as risk management. The Canadian Space Agency's involvement via Kutryk is worth noting. Canada's continued operational role in ISS spacewalks keeps its astronaut corps EVA-current, a capability that has value for whatever comes next in LEO. International partnerships built through ISS operations are themselves a form of infrastructure, even if they don't appear on a balance sheet.
