I'd pick Light for an analysis tool, the charts and sources read better on a pale surface and the violet bars still pop. Dark works as the night option. Is the sources panel on the right open by default?
Halden - Landing Page Concepts
Halden sells to grid operators, and there were two good ways to pitch it: tell them what's coming, or show them everything happening now. Rather than pick one on instinct, I designed the landing page as an A/B test so real traffic decides.
The two pages share one 12-column grid, the same section order, type system and components. Each variant changes only its message, its hero visual and its light color, so any difference in demo requests comes from the pitch and not the layout.
The work was building a system flexible enough to carry two different stories without either one feeling like the backup version.
Forecasting (act before demand spikes) vs metering (see and bill every kilowatt)
I'd pick Forecasting. "From meter reading to early action" tells a grid operator what they get in one line. Did you write both hero lines before designing the visuals?