RE:Batteries and contracts
I'm just using my common experience and common sense here. No specialties, but my best guess.
Operation and maintenance is usually accounted for in any plan like Montalva. Battery infrastructure world wide doesn't change over night. Even if a brand new battery technology emerged over night, adoption world wide would take time. No one is likely to be surprised. New technologies take years to be adopted.
So any new technologies will allow GRB to be more profitable / better positioned by utilizing them as they become available and needed.
Also, Antioch90 mentioned "A kWh is a kWh". Whether it is stored in lithium ion, or a flow battery. There are pros and cons for new or old "proven" technologies.
Infrastructure is developed and updated over time. It's very unlikely GRB will miss out on any huge technological developments.
Besides, the biggest concerns with solar traditionally has been Solar Radiation availability, Energy Distribution and Surpluses (which can't be used).
From what I've seen:
In Puerto Rico, GRB has high solar property, transmission lines, and enough demand to encourage growth opportunities.
In Alberta (if my hunch is right) GRB is going to have multiple installations connected to the/a Smart Grid. That would take care of any Surplus and Distribution.
Location and solar availability will have to be take into account on a case by case basis. But if different installations take place over time, then GRB can also incorporate new battery technologies as needed.
I remember Jeff posting something along the lines that he has access to great solar / battery assets but won't discuss what exactly those assets are, as to protect GRBs intellectual property and interest. Sooooo, you might not hear from him on that one.
This was a much longer reply than I meant for. I hope it wasn't too wordy, and helps.