Build an automated billing system where rooftop solar households are credited or charged on verified net energy exchange with the grid. The contract reads verified meter data for both directions of flow and calculates the net settlement automatically, producing an accurate bill without manual reconciliation.
Turn error-prone monthly net metering into an automatic, verified settlement of two-way energy flow.
01.
The Energy Meter Oracle anchors both imported and exported energy for each household, so the net position rests on verified two-way flow.
02.
The contract nets export against import and applies the net metering tariff, producing a credit or charge without manual reconciliation.
03.
The Invoices and Billing module issues the household's bill directly from the net calculation, removing the utility's manual step where errors arose.
04.
Surplus export credits are tracked on-chain and carried to the next cycle per policy, so a household's banked energy is never lost or miscounted.
05.
Escrow and Conditional Settlement moves the net amount between household and utility once both readings are verified, closing the cycle cleanly.
06.
The household can inspect verified import, export, and net figures for each cycle, so a billing complaint is checked against a shared record.
Follow a single rooftop household through a billing cycle from two-way metering to an automatically settled net bill.
23:58:00
[SYS] Reading bidirectional meter NM_2201...
23:58:00
[CMD] anchorFlows(import: 310, export: 240, meter: "NM_2201")
23:58:01
[AUTH] Verifying meter signature both directions...
23:58:01
[OK] Import and export sealed for cycle.
Cerulea decomposes net metering into modular contracts. Each layer meters both directions, nets the flow, bills the household, and settles the cycle automatically.
Automated net metering is a horizontal capability. Here is how different actors in rooftop solar put the shared ledger to work.
Receive an accurate net bill each cycle with visible import, export, and credit figures, ending disputes over estimated readings and lost export credits.
Key Asset Types
Bill rooftop consumers from verified two-way flow automatically, cutting the manual reconciliation and complaint volume that net metering historically created.
Key Asset Types
Audit net metering settlements from a consistent on-chain record, confirming credits and charges follow policy without collecting data from each utility.
Key Asset Types
Whether you are bridging a utility's net metering billing system or reading directly from bidirectional meters, Cerulea routes both into one settlement ledger.
For utilities on legacy net metering billing systems. Two-way readings are translated into signed on-chain records through the API gateway automatically.
Net Metering Billing
Utility Systems
Cerulea API Gateway
Reading Hashing & Signing
Cerulea Private Chain
Net Settlement Ledger
For bidirectional meters with edge connectivity. Import and export readings are signed by a device key and routed straight to the settlement contract.
Bidirectional Meter
Household Premises
Consortium Validators
Reading Consensus
Cerulea Ledger
Net Flow Record
Building net metering with bidirectional metering, net calculation, and credit carry-forward from scratch requires specialised engineers and long integration cycles. Calculate your exact deployment speed using Cerulea.
Traditional Deployment
Solidity Coding & Audits
~ 11 Months
Visual Compilation
WASM Logical Artifacts
~ 4 Weeks
The legacy timeline reflects utility billing integration benchmarks. Wiring bidirectional metering, building custom net calculation and credit logic, and shipping automated billing for an average utility takes a baseline of 7 months. Building the same architecture on Cerulea takes a baseline of 2 weeks, because Cerulea Studio visually translates your metering and billing rules into pre-audited WebAssembly binaries and provisions the net settlement ledger instantly.