Energy technology - Topics

Aeration alone can eat half the electricity bill of a sewage plant France built one reactor design fifty times and that repetition is the whole story Water mills and windmills powered the medieval economy The shift from wood and water power to coal and steam Three Mile Island ended new reactor orders for thirty years Reverse osmosis brine is the waste stream desalination never solved Why electrolyzers need steady cheap power before hydrogen pencils out When humans learned to control fire and what it changed How the lithium-ion battery unlocked portable everything Pumped hydro is still the largest battery in the world HVDC loses about 3 percent per 1000 km: the math of long-distance transmission How does nanotechnology let a battery electrode hold more charge? Cathode chemistry drives battery cost more than cell assembly ever will Why is grid frequency 50 or 60 Hz and what happens when it drifts? High-voltage linemen and the cancer studies that keep contradicting each other Why does a grid need spinning reserves when batteries respond in milliseconds? Solid-state batteries are still stuck at pilot line scale Comparing lithium-ion and sodium-ion cells on energy density alone hides the cost curve Grid-scale lithium batteries now beat a gas peaker on cost in most markets What limits battery-electric aircraft to short regional hops? How do electric buses handle winter range loss on urban routes? Flow batteries vs lithium for eight-hour storage: cycle life decides Combined cycle gas turbines still set the clearing price in most markets Transformer lead times stretched to four years and almost nobody modelled it District heating from waste industrial heat is boring and hugely effective What daily life looks like when energy is too cheap to meter What the duck curve is and why it wrecks afternoon economics A coal ash pond is a dam nobody inspects until it fails Steel chemicals and electricity defined the second industrial revolution Hydrogen trains versus electrified track: which wins on rural lines? Data centers signing nuclear PPAs: what a 24/7 clean power contract guarantees Vertical farming's electricity bill is the entire business case