Yes, Gupta's hydro and solar are opposite sides of Whyalla but the transmission lines they will connect to lead to GFG's mines and smelter. The Kanantoo mine proposal is also not near any particular source, but it's going to be run by AGL which has several wind farms as well as gas plants so will not need to use price arbitrage as the main business model for the storage. I'm not sure about any of the others.PeFe wrote: ↑Wed Jul 24, 2019 2:58 pmAh yes, I meant "condensers" ....not generators.Did you mean "synchronous generators" or "synchronous condensers"? https://en.wikipedia.org/wiki/Synchronous_condenser
The Cultana and Highbury and Kanmantoo pumped hydro proposals are not necessarily linked to solar/wind farms. Gupta's proposed hydro is in the Middleback Ranges 90 kilometres away from Whyalla and his solar farm. Also Gupta's proposal is the smallest capacity of all the proposals, really only sized as back up power for his steel plant.At present, most storage is proposed as an adjunct to individual renewable generators to allow them to bid deeper into the market by guaranteeing more of their supply power. The GFG Alliance/Zen Energy proposals near Whyalla might get up as Gupta will own the entire electricity supply chain from sunlight to steel. His business model will not rely on arbitrage between the troughs and peaks of the wholesale electricity price.
Cultana is proposed to use sea water (giving an advantage over its competitors using fresh water) but vacant mines provide cheaper builds....
Hopefully more than one of these proposals get up.
The more things that are built to cut off the extreme price spikes and to remove the times of negative pricing, the less attractive it will be to develop things that rely on those spikes and troughs to be profitable.