What is a digital twin?

What is a digital twin?

A digital twin is a working software model of a physical thing (a building, a piece of infrastructure, a workflow) that stays connected to real data about how that thing behaves or is planned to behave. You change parameters in the software; you see how the physical thing would respond.

The purpose isn't visualization for its own sake. A digital twin is a place to think out loud with data. You test what would happen if you added chargers, changed schedules, hit a bad-weather day or lost a piece of equipment, and you get back a defensible answer at a fraction of the time and cost of finding out on the physical thing itself.

The three shapes of digital twin, and where BEV Ready fits.

Digital twins come in three broad shapes, distinguished by what they model:

• 1. Facility twins. Models of built assets (buildings, campuses), anchored in as-built engineering models and the systems inside them. Useful for managing what already exists.
• 2. Process-simulation twins. Models of a repeated workflow: a manufacturing line, a warehouse operation, a depot's charging day. You change the parameters of the workflow and see how the result changes. Used to test designs before you commit to them.
• 3. Operational twins. Models of running infrastructure that stay connected to live sensor data and use it to predict, alert, and (sometimes) control. Used to optimize systems that are already operating.

BEV Ready is a process-simulation twin, applied to EV depot planning. The workflow it models is your depot's charging day, at 15-minute resolution. You change parameters (fleet size, vehicle types, charger count and power, service capacity, tariff) and see how the day would run against the site's real electrical and energy limits.

What BEV Ready's twin does today.

The free feasibility check is live now. The rest is the engineer-led depot twin, built with you and owned by you.

• Feasibility screening. A first-pass answer to "is this depot worth pursuing?": energy demand, peak load, the utility service tier you'll likely need, and a rough cost, in minutes rather than weeks.
• Charging-day simulation. A 15-minute-resolution profile of the whole day, managed vs. unmanaged charging, with per-node feasibility showing when the plan works and when it breaches the site's electrical limits.
• Demand-charge exposure. A directional estimate of the monthly demand-charge dollars at the modeled peak, from sourced utility rates; when no rate resolves, it says so plainly rather than guessing.
• Storage (BESS) business case. How much a battery would save on the modeled day's demand charges, and a directional storage business case.
• Financial proforma. A 20-year EV-vs-ICE lifecycle view covering NPV, payback, and TCO. It's calculator-first: you enter your own quotes and rates, and every figure traces to a named assumption.
• Scenario comparison. The five standard financial scenarios (stay-ICE baseline, grid + chargers, + solar, + storage, + both) ranked by 20-year NPV and feasibility-checked, so an infeasible scenario never ranks above a feasible one.
• Evidence pack. A print-ready, defensible summary covering the modeled day, demand-charge exposure, the financial memo, and an assumption ledger, built to justify a service-capacity review with your utility and a licensed engineer.
• Measurement & verification. Once a site is operating, log observed periods and the tool shows how reality tracked the modeled day.

See the full capability breakdown on the product page →

What the roadmap adds: the operations layer.

Today's tool answers the planning questions: what should this depot look like, and what will it take? Once a site is built and operating, a different set of questions takes over, and the roadmap addresses these deliberately, in the same observe-model-advise shape as the planning tool.

Everything in this section is on the roadmap. None of it is a live product feature today. We'll say plainly which pieces are being built now and which are further out.

• Plan vs. actual ◐ In development
  Once the site is running, log the real numbers back into the model and see where reality diverged from what was planned. "Route 12 is burning 15% more energy than modeled; your winter margin is gone." The mechanism ships now; the fuller retention loop grows with real operating data.
• Demand-charge month-to-date tracking ◐ In development
  As the month accrues real peaks, the tool tracks month-to-date exposure against what was planned, and flags when a night's schedule risks a new peak. "You've set a 480 kW peak this month; tonight's schedule risks 510."
• Morning readiness ◐ Further out
  The 4 AM operator question: "will every vehicle make pull-out with enough charge?", as a ranked list of at-risk vehicles, with the reason. This one requires either a telematics partnership or a live vehicle-side data feed; it moves when that's in place, not before.

A note on what the operations layer is NOT. Even at the roadmap horizon, BEV Ready remains a planning and analysis tool: an independent model that tells you whether your depot's operations are running the way they were designed to. It observes and advises; it does not control chargers, dispatch vehicles, or connect to your energy-management system in real time. That boundary is deliberate. The value is being the independent second opinion on what's actually happening, not another piece of software running your depot.

What BEV Ready is not.

Being explicit about what a tool isn't is how technical buyers know it can be trusted for what it is.

• Not a stamped engineering study. The evidence pack is a defensible planning input for a service-capacity review, not a substitute for one. When the stakes justify a stamped design, our engineers or your PE take it there.
• Not a guaranteed bill or a financed quote. Financial output is a 20-year directional estimate with every figure named. You can re-run it with your own numbers.
• Not an energy-management system. BEV Ready does not connect to your chargers or control your depot's operations. It's a planning and analysis tool that runs alongside whatever operational system you have.
• Not an auto-optimizer. The tool ranks scenarios and surfaces trade-offs. It does not pick "the right answer" for you or auto-size equipment. The decision stays yours.
• Not a multi-site fleet planner (yet). Every model is a single depot. Portfolio-level analysis is on the roadmap, honestly badged when it ships.
• Not a vendor with a horse in the race. BEV Ready doesn't sell chargers, batteries, or vehicles. It sizes them, independently.