Run the numbers before you run the cables
Use this free calculator to size your EV park, estimate daily electricity costs, and simulate the impact of PV, batteries, and grid output. No guesswork needed.
Want to turn your numbers into a real plan?
Energy systems built for your world
Whether you're powering a factory, running a business, or expanding EV fleet — Stuart has the hardware to match your energy goals.
Hybrid Solar ESS Cabinet
An all-in-one cabinet with battery, inverter, HVAC, and safety built in — delivering peak shaving, backup power, and energy independence without taking over your space.
PV Storage & EV Charging Cabinet
A dual-purpose outdoor ESS that combines solar storage with integrated EV charging — reducing costs, maximizing clean energy use, and powering vehicles day and night.
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Utility-Scale ESS (High-Density, 5 MWh)
The JAGalaxy 2.5 MW / 5 MWh liquid-cooled ESS combines massive capacity with advanced cooling and rack-level management — delivering maximum efficiency and safety for grid-scale projects.
Want a done-for-you plan?
We help you turn estimates into action. From energy modeling to rollout, Stuart makes your EV setup work at scale.