Ampenergo will not initially be marketing home heating installations
and
The first products are projected to be available by late fall of this year or early next year. The first product is likely to be a 1 MW plant for heating or power generation.
I would think scammers would target the easiest audience (gullible individuals), and the small size/capacity of individual demo E-cats would support such a direction. Instead they are going with larger installations presumably for industrial/commercial operation.
They seem aggressive about the timing too, if they are serious about taking orders by the end of the year (I'll be really impressed if they are delivering within that timeframe). No sign of slippage in schedules, which is one of the key things I'm looking for as evidence that the E-cat is something less than it is purported to be. Interesting.
Once 1MW is stable, they should work on 100MW class. (Utility-scale power turbine/generators are in the 50 to 600MW class. Larger power plants generally use multiple 600MW turbines)
The device reportedly occasionally emits small amounts of gamma, and needs shielding. Residential use will not happen for a while until it is proven safe for unattended home use.
If it needs an attendant to monitor it, then it needs to be industrial-scale (minimum multi-MW) for it to be cost-justifiable. This is a good sign, because trying to scam major corporations on something like this is not something a flim-flam guy would try.