Solution · P0
Fleet Charging
BESS + 800V DC BUS. All DC output voltages. Dynamic load management. V2G.
- 500 kW–2 MW
- Typical capacity
- Fleet operator / logistics
- Primary buyer
- P0
- Priority tier
- Projected / Targeting
- Outcome confidence
The problem
Why this matters
Buyer pain first — architecture second. If the problem is not real, the stack is irrelevant.
Grid upgrades for fleet electrification cost millions and take years.
Buyer jobs
- · Charge overnight fleets without multi-year grid upgrades
- · Control demand charges during simultaneous charging
- · Prepare for V2X where vehicles and contracts allow
Grid upgrades for fleet electrification cost millions and take years.
Architecture notes
- · DC charging on an 800V spine with BESS buffer (design target)
- · OCPP session metering + EMS schedule against connection limits
- · ISO 15118-20 V2X control as platform intent, not a shipping claim
Architecture
How Joule Junction addresses it
Deployment scale 500 kW–2 MW. The solution traverses these energy-flow stages on the open DC platform.
Energy-flow path
Platform
Three layers. One stack.
Every solution runs on DC BUS, Metering, and Energy Management — the same open architecture at every scale.
DC BUS
The physical DC backbone. SST, BusWay, PCS, protection, and grid interface in one architecture — current flagship 800 V DC.
- Solid State Transformer (SST)
- DC BusWay
- Power Conversion System (PCS)
Metering
IEEE 2030.5-native data layer. Measurement at every point — grid edge, DC bus, load, charger.
- IEEE 2030.5 Smart Meters
- DC Energy Meters
- Sensors & Data Acquisition
Energy Management
Software that optimizes. The layer customers evaluate first.
- Forecasting
- Tariff optimisation
- Battery optimisation
Connected systems
What integrates on the bus
Systems designed to sit on the DC BUS for this solution.
Products
Platform building blocks
Hardware that shares energy-flow stages with this solution.
Solid State Transformer
MV AC → 800V DC in one step. No 50 Hz transformer.
Product →800V DC BusWay
The physical backbone. Plug-in DC distribution.
Product →Power Conversion System
Bidirectional AC ↔ DC conversion. Grid-forming capable.
Product →DC Meter
IEEE 2030.5-native measurement on the DC bus.
Product →Commercial outcome
What you are targeting
Outcomes below are design-target projections unless marked measured or customer-reported.
Projected / Targeting
Avoid grid upgrade costs with BESS-buffered DC charging.
More solutions
Related buyer paths
Grid Capacity
BESS + PCS + EMS orchestration to unlock capacity behind constrained grid connections.
Learn more →P0Edge Data Centres
Compact 800V DC architecture for distributed edge deployments.
Learn more →P0Modular Data Centres
Pre-fabricated 800V DC BUS modules — deploy in weeks, not months.
Learn more →Evaluating fleet charging for your project?
Talk with Joule Junction about site capacity, load profile, and architecture fit — platform first, products second.