https://cleantechmachines.com/ Essays on clean energy hardware: manufacturing scale-up and factory economics, grid interconnection queues, storage duration versus power, and how process engineering rather than invention drives cost curves. en https://cleantechmachines.com/cost-curves-are-built-not-discovered/ https://cleantechmachines.com/cost-curves-are-built-not-discovered/ Tue, 28 Jul 2026 00:00:00 +0000 Economics The decline in clean energy hardware costs is an accumulation of process engineering — material removal, step elimination, throughput, yield, standardisation — not a sequence of breakthroughs. Which is why some technologies learn quickly and others never do. https://cleantechmachines.com/duration-is-not-power/ https://cleantechmachines.com/duration-is-not-power/ Thu, 09 Jul 2026 00:00:00 +0000 Storage A storage asset has two independent ratings and they are bought from different suppliers. Why the split between megawatts and megawatt-hours decides which services an installation can sell, and which it only appears to. https://cleantechmachines.com/everything-waits-for-the-interconnection/ https://cleantechmachines.com/everything-waits-for-the-interconnection/ Mon, 22 Jun 2026 00:00:00 +0000 Grid Why connecting a finished generator to the grid takes longer than building it — the sequential study problem, speculative queue entries, upgrade cost allocation, and the withdrawal cascades they produce. https://cleantechmachines.com/the-factory-is-the-technology/ https://cleantechmachines.com/the-factory-is-the-technology/ Fri, 05 Jun 2026 00:00:00 +0000 Manufacturing A working device and a manufacturable product are separate inventions, and the second one takes longer. Why scale-up, not discovery, is where clean energy hardware actually gets stuck.