Originally Posted by pljudge321
Buildings are the one big area where there are massive energy savings to be made, and relatively cheaply. I thinks they comprise around 40% of total EU energy consumption.
Three types of heat , waste heat from one can be used in lower grades
- industrial high grade heat, hundreds of degrees
- hot water
- space heating = warm rooms
A lot of the industrial heat is used to break chemical bonds, baring a change in the laws of thermodynamics there aren't game changing savings to be made there.
The studies I've seen for Ireland indicate that it is pretty much pointless until around 9 GW of wind is integrated on the system, and even then theres an equivalent benefit to simply having better wind forecast models and stochastic unit commitment implemented.
To get massive storage you need to upgrade the grid and for that sort of money you could build more interconnectors to the UK, then and ONLY then can you start to talk about exporting power
Also note that batteries and interconnectors are both DC
so the rectifiers and inverters and transformers are similar
The point being that much of the infrastructure you use to provide massive amounts of stored energy are the same as will link you to the UK grid, so the economics change a lot.
Peak demand is a lot pricier than off peak, up to 10 times the price.
MOST of the storage system economics are based on chasing that sweet spot. Super insulated hot water tanks and homes with smart meters would reduce peak demand and thus a lot of the economics.