TIL l'Ukraine était synchronisé avec le réseau électrique russe jusqu'au jour de l'invasion. L'Ukraine fonctionnant sur ses seuls moyens de production depuis, l'UE cherche a accélerer son raccord au réseau synchrone européen
« Researchers came up with an array of eight STOs connected in a series that converted 2.4 GHz Wi-Fi electromagnetic radio waves into an electrical current that was transmitted to a capacitor and lit a 1.6V LED. Five seconds of charging the capacitor powered the LED for one minute »
Even with some apparent drawbacks as noted at the end of the article, this finding may actually be an interesting alternative to the usual lithium-based batteries used for grid storage where discharge rate is not as limiting as in other usecases.
« […] Prenez les offres d’ENI et de TotalEnergies en électricité. Pour un appartement parisien de 45 m2, elles s’élèvent à 2 835 et 2 688 euros par an, selon le comparateur Selectra, le 19 octobre. Soit un surcoût respectif de 1 344 et 1 197 euros par rapport au tarif réglementé »
« The devices produce a sustained voltage of around 0.5 volts across a 7-micrometre-thick film, with a current density of around 17 microamperes per square centimetre »
Interesting investigation, sad to see how the involved companies handle that, i.e. just saying that everything is fine and they have in-house experts to ensure data protection 🤷
« The Highview battery will store 250MWh of energy, almost double the amount stored by the biggest chemical battery, built by Tesla in South Australia »