Re: wonderful concept
It's a nice idea to reuse waste heat however from a engineering point of view, that energy supply needs to be predictable and within certain parameters otherwise you need to put in place parallel systems either to make up the shortfall and/or deal with the surplus energy along with those systems incumbent costs. This makes the potential uses for low grade waste heat fairly limited.
The use in agriculture isn't new, there have been a number of previous projects which use biodigesters and gas engines with the exhaust heat ( including CO2 enrichment) being used in large scale greenhouses.
Despite the headline, no doubt the big driver in location of this project is the existing grid connection infrastructure. Having done some work on similar projects in the past I will say that a high proportion of the initial project cost for something like this would be swallowed up by the HV Multi MW supply infrastructure rather than the processing hardware itself.
If you have a suitable use for the waste heat in close proximity which can cope with varying energy input then all the better, its a win win.
This variability in waste heat energy output is alluded to in the article with the reference to use of the lake for additional cooling.
Good luck to them in using that waste energy in a beneficial manner.