Batteries are the big question and sadly nobody really has an idea how long they will last, conventional batteries will not appreciate total discharge.
I note from your other post that you are hoping to go off grid, however you must remember that the bulk of the power is produced in the summer, and for most people the bulk of use is in the winter. Batteries are not good for long storage since you will need so many and the cost so h
batteries, solar and cheap night rate electric is certainly the way to go.I’m sure it’s not far off regarding the batteries. I am planning a small scale storage set up for the house. Plan is to store power when it’s at a low tariff over night, 5p per kw and use it throughout the day. The kit is available as a complete package, but not that cost effective, maybe if electric goes up again it would be. My plan is batteries, 8kw storage, charge management and inverter . Not sure how to connect everything together just yet . But will get a spark in to sort it. If I can get pay back over 2 years I will do it.
Its just standard process engineering but areas to look at are waste heat recovery using thermal oil, which normally gets converted into electric using conventional steam or thermal oil. For direct applications of thermal oil the commercial bakery business is way ahead with thermal oil cookers and ovens. As for Solar the Germans have high temperature solar thermal panels capable of using thermal oil. As for sources of insulated thermal oil stores the Asphalt industry is a ready made source using standard container sizes. All containers are normally dual heating with both thermal oil pipes and electrical resistance. So any excess wind or solar can charge up the thermal oil store.Not something I've come across, where could I find out more?