"In the particular is contained the universal." — James Joyce
One device. Full capability: the same code that runs in the cloud, running on site.
The Connectivity Wall
Traditional In-Home Displays are dumb terminals. They wait for the cloud to tell them what the price is.
When the Wi-Fi drops, visibility stops. When the cloud is slow, "real-time" data is already minutes old. Customers see abstract kWh because the device can't compute currency.
Cloud Round-Trip Latency
You can't show the cost of a boiling kettle in real-time if the maths has to travel 500 miles to a data centre and back.
Data Egress Costs
Sending 1-second pulses to the cloud for millions of homes is a bandwidth nightmare. Most of that data is noise that should never leave the home.
Local
A ledger in the meter
Meridian Edge isn't a client. It's a full instance of the Meridian engine.
The same BIAN-compliant architecture that runs in the cloud, ported to run on low-power hardware. The device doesn't just record pulses - it runs the valuation logic locally.
Standard IoT Device
- Record pulse → Send to cloud
- Cloud computes → Send to app
- Offline = No data, no price
- High cloud storage costs
Meridian Edge
- Compute value locally, instantly
- 13 months of history on-device
- Offline = Full visibility continues
- Only aggregates leave the home
Instant
Sub-second financial updates
"How much am I spending right now?" shouldn't require a round-trip to AWS.
Push the tariff to the edge. The device applies the valuation logic to local pulses. Same business logic in the meter as in the cloud. Total consistency.
sequenceDiagram
participant Cloud as Meridian Cloud
participant Edge as Meridian Edge
participant Meter as Meter
Cloud->>Edge: TOU tariff (daily)
Cloud->>Edge: CO₂ intensity (every 30 min)
loop Every second
Meter->>Edge: Pulse
Edge->>Edge: Value locally
end
Note over Edge: Customer sees £ and CO₂ instantly
Edge->>Cloud: Settlement packet (every 30 min)
What the customer sees: In-Home Display
Solar customer earning right now. Money, not kWh. No internet required.
Offline
Works when the cloud doesn't
Connectivity is not guaranteed. Rural areas, network outages, overloaded infrastructure.
Meridian Edge runs the same code as Meridian Cloud. Same valuation logic, same quality tracking, same audit guarantees. When the connection is flaky, idempotency ensures no double-counting. Reconciliation by design.
Offline Vault
Full audit trail preserved locally. Nothing lost during outages.
Smart Sync
Settlement-ready packets, not raw pulses. 90% reduction in data egress.
Privacy-First
Granular data stays in the home. Only aggregates leave.
Asset Agnostic
Same logic for electricity, gas, water, EV charging.
Hardware Ready
Most CAD software treats the device as a display. The compute stays in the cloud.
Meridian Edge treats the device as a ledger. Runs on Pi Zero class hardware. CAD, mobile app, or standalone unit - the same engine everywhere.
Low-Cost
Pi Zero class hardware. Go application with SQLite. Mass rollout economics.
Multi-Asset
Gas, solar, battery, import, export. One device, multiple accounts.
White-Label
Your brand, your hardware, Meridian inside.