Hi.
You have to set the Grid company to “-”, or the app will use builded in prices.
Also have a look at my post how to automate the fetching of prices from NVE with Homey Script.
I recently published an app that, at least for me, replaces Sparegris and then some since the app had been largely unmaintained for some time. It needed price info, and at least for Norwegian users, it creates a fairly complete view of the price, including grid tariffs, Norgespris and all that.
There have been some requests for adding price-related flow cards (cheapest hour and things like that). I don’t really want to completely cover everything this app does, but I don’t mind adding some of the more useful cards related to price.
If this is interesting and you have use cases you want to share, look at this topic: [APP][Pro] PELS - Save energy and money with automatic capacity control and price-aware load shifting
