What Is It

min read

2026-05-21

Author

Jim Reardon

PATtech Renewable Energy Platform

This document describes how PATtech tracks, matches, and evidences renewable electricity usage and emissions claims at an hourly level, designed for generators, auditors, sustainability teams, and energy market participants.

Executive Summary

PATtech is a renewable energy technology platform that enables organisations to substantiate renewable electricity and emissions claims with the rigour expected by auditors, regulators, and sustainability frameworks. The platform combines metered consumption data, generation data through renewable energy guarantee of origin (REGO), including ownership and retirement records, emissions factors, and tamper-evident audit logs into a single, time-stamped evidentiary record.

‍

CLAIM RIGOUR Hourly granularity

Consumption and generation are reconciled per settlement period, not aggregated annually, supporting 24/7 matching claims.

EVIDENCE Audit-ready records

Every certificate, retirement, and matching event is linked to immutable logs, source files, and approval metadata.

TRACEABILITY End-to-end lineage

From generator output to retired certificate to consumer claim, each MWh is traceable to source, time, and counterparty.

RELIANCE Designed for assurance

Suitable for reasonable assurance engagements, with read-only access for assurance providers on request.

‍

What This Document Evidences

This collateral describes the supported claim types, the underlying REGO framework, the evidence assembled into a customer claim pack, the methodology applied, and the controls that protect data integrity. It is intended to be referenced alongside a customer's period-specific claim pack and may be relied upon by external assurance providers as a description of PATtech's product-level controls.

‍

Who relies on this document

Internal sustainability and finance teams
External auditors and assurance providers
Energy retailers, generators, and trading counterparties
Boards reviewing climate-related performance

What is in scope

Renewable electricity usage and matching claims
Hourly (24/7) renewable electricity claims
REGO retirement and chain-of-custody
Scope 2 market-based and location-based emissions
Supplier and generator traceability records

‍

Claim Types Supported

PATtech is designed to evidence claims across the spectrum of renewable electricity reporting obligations and voluntary commitments. Each claim type is supported by a defined evidence set and a documented calculation methodology.

‍

CLAIM 01 Renewable Electricity Usage

Substantiates that a defined volume of consumed electricity is sourced from renewable generation. Supports voluntary corporate renewable claims aligned with widely used sustainability disclosure frameworks.

CLAIM 02 Hourly (24/7) Matching

Demonstrates time-coincident matching of consumption to renewable generation in each settlement period, including matched MWh, residual MWh, and an hourly match percentage.

CLAIM 03 Certificate-Backed Consumption

Each MWh of claimed renewable consumption is backed by a uniquely identified, eligible REGO. Chain-of-custody from issuance through to retirement is preserved.

CLAIM 04 Emissions Reporting

Produces market-based and location-based Scope 2 emissions outputs derived from matched consumption, residual mix, and jurisdictional emissions factors with a documented basis.

CLAIM 05 REGO Retirement

Records formal retirement of REGOs against a specified beneficiary and reporting period, preventing double-claim and supporting registry reconciliation.

CLAIM 06 Supplier & Generator Traceability

Maintains a verifiable link between claimed MWh and the originating generator, technology, commissioning date, and supplier, supporting additionality and provenance disclosures.

‍

Claim Certification Framework

Every PATtech certified claim is produced through a controlled, repeatable seven-stage process. Each stage transforms upstream inputs into evidenced outputs, with validations and audit logs captured at every transition.

‍

Consumption Data

Half-hourly metered loads

Generation Data

Asset-level renewable output

Hourly Matching

Time-coincident pairing

Certificate Allocation / Retirement

Against matched MWh

Emissions Calculation

Market & location-based

Audit-Ready Evidence

Tamper-evident logs

Customer Claim

Certified, period-bound output

‍

Inputs

Metered loads, generation telemetry, emissions factor libraries, contracts.

Engine

Deterministic hourly matching with documented allocation rules and tie-breaking precedence.

Outputs

Claim summary, matched MWh, retired REGOs, emissions result, evidence appendices , all referenced to source data through tamper-evident logs.

‍

Evidence Included in a Claim Pack

Each customer-specific claim pack issued by PATtech contains a defined evidence set sufficient for internal review and external assurance. The contents are produced from controlled platform data and are uniquely identified to the reporting entity and period.

‍

Primary records

Reporting entity, beneficiary, and period boundary
Hourly consumption record (MWh per settlement period)
Hourly generation record by asset and technology
Matched MWh and residual MWh per period
List of REGOs retired with unique identifiers
REGO retirement confirmations and timestamps
Scope 2 emissions output (market and location-based)

Supporting evidence

Methodology version applied during the period
Emissions factor sources and effective dates
Generator details, technology, and commissioning data
Counterparty and supplier reference records
Data ingestion logs, file hashes, and ingestion times
Reconciliation notes and exception register (if any)

‍

Evidence Integrity

The evidence pack is generated from a single source of record. Each artefact references the underlying immutable transaction log, allowing any value in the pack to be traced back to its originating data point, the user who performed any action, and the time the event occurred.

‍

Formal Certification Statement

The following template is issued for each customer claim pack. It records the entity, period, matched volumes, retired certificates, emissions outcome, and the individuals responsible for preparation and approval.

‍

PATtech REGO and Emissions Claim

Issued under PATtech methodology version v1.0

PATtech certifies that the renewable electricity and associated emissions outputs detailed below have been produced from controlled platform data using the PATtech REGO framework described in this document.

Customer / Reporting Entity AAA Logistics Ltd

Reporting Period 01 Jan 2025 — 31 Dec 2025

Total Consumption (MWh) 12,480

Matched MWh 10,907

Hourly Match Percentage 87.4%

Certificates Retired 10,907 certificates · 10,907.00 MWh

Emissions Result (Scope 2) 461.04 tCO₂e — market-based

This certification is supported by the corresponding evidence pack referenced in Section 04 and is valid only in conjunction with the underlying records held in the PATtech platform for the reporting entity and period named above.

‍

Example Customer Claim Statements

The following statements illustrate the form of language a reporting entity may use in sustainability disclosures, procurement communications, or board-level reporting once a claim has been certified by PATtech. Wording should be adapted to the relevant disclosure framework.

‍

“During the 2025 reporting period, 87.4% of AAA Logistics Ltd’s 12,480.50 MWh electricity consumption was matched on an hourly basis to renewable generation backed by retired REGOs, evidenced by PATtech.”

— Use case: voluntary renewable electricity claim with hourly granularity

“AAA Logistics Ltd achieved an hourly renewable energy match of 87.4% during the 2025 reporting period, calculated by PATtech using time-coincident generation and consumption data across all NZ operating sites.”

— Use case: 24/renewable electricity disclosure

“All renewable claims for the 2025 reporting period are supported by 10,907 uniquely identified REGO certificates retired against AAA Logistics Ltd in the PATtech REGO registry, as recorded in the PATtech evidence pack issued on 14 March 2026.”

— Use case: chain-of-custody and double-claim avoidance disclosure

“Scope 2 market-based emissions for the 2025 reporting period are calculated by PATtech as 462.10 tCO₂e, reflecting the residual mix applied to 1,573.30 MWh of unmatched consumption.”

— Use case: greenhouse gas inventory note

“Renewable generation supplied to AAA Logistics Ltd is traceable to five named generators across onshore wind, solar, hydro, and geothermal technologies, including commissioning date and supplier, as recorded in the PATtech platform.”

— Use case: provenance and additionality narrative

‍

Audit & Assurance Readiness

PATtech is built to support both limited and reasonable assurance engagements. Evidence is structured, time-stamped, and linked, and the platform's controls are designed to be testable by an independent assurance provider.

‍

For internal audit

Evidence pack mapped to disclosure line items
Reproducible calculations from raw inputs
User and approval audit trail per action
Exception register with resolution notes

For external assurance

Read-only assurance access on request
Sample selection from interval-level data
Evidence integrity testable via hash references
Methodology version recorded against each claim

‍

Assurance Touchpoints

ASSURANCE QUESTION	WHERE EVIDENCED IN PATTECH	TYPICAL TEST PERFORMED
Is consumption data complete and accurate?	Ingestion logs & reconciliation reports	Sample comparison to source meter readings
Are matched MWh correctly calculated?	Hourly matching detail (CSV)	Recalculation of selected periods
Are retired certificates valid & unique?	Certificate register & registry confirmations	Registry lookup
Are emissions factors appropriate?	Methodology and factor source records	Verification against published references
Is access to data appropriately controlled?	Role assignments & access audit log	Review of user roles and approval events

‍

Methodology Overview

PATtech applies a documented, deterministic methodology to produce certified claims. The methodology version applicable to each claim is recorded in the corresponding evidence pack.

‍

Define reporting boundary

Establish the reporting entity, sites, supply points, and reporting period

Ingest and validate consumption data

Half-hourly metered consumption is ingested from approved sources, validated for completeness, and reconciled against billed totals where applicable

Ingest and validate generation data

Asset-level renewable generation is ingested per interval and validated against issued REGO volumes for the same period

Apply hourly matching

For each period, eligible generation is matched to consumption using documented allocation rules, producing matched MWh, residual MWh, and a match percentage

Allocate and retire REGOs

REGOs are allocated to matched MWh and retired in the registry against the reporting entity for the reporting period

Calculate emissions

Scope 2 market-based emissions are calculated using matched MWh, residual mix factors, and supplier-specific factors where available. Location-based emissions are reported in parallel

Issue evidence pack and certification statement

Outputs are compiled into a customer-specific evidence pack and accompanied by the formal certification statement

‍

Controls & Data Integrity

PATtech operates a layered control environment covering data ingestion, processing, storage, and disclosure. Controls are designed to ensure that certified claims are accurate, complete, and tamper-evident.

‍

CONTROL DOMAIN	CONTROL OBJECTIVE	HOW PATTECH DELIVERS IT
Data ingestion	Inputs are complete, accurate, and from approved sources.	Validated upload pipelines, source-file hashing, and reconciliation reports against billed totals.
Calculation logic	Matching and emissions calculations are deterministic and version-controlled.	Code-managed methodology with explicit version tagging on each claim output.
REGO management	Each REGO is allocated and retired exactly once, against the correct entity.	Registry-aware retirement workflow with confirmation receipts and double-claim prevention.
Access control	Only authorised users can ingest data, approve, or retire certificates.	Role-based permissions, approval workflows, and per-action audit logging.
Audit logging	All material actions are recorded with user, timestamp, and source reference.	Append-only log linked to data records; signed exports for assurance providers.
Change management	Methodology and factor changes are tracked and applied consistently.	Versioned methodology releases with effective dates recorded against each claim.
Disclosure integrity	Issued claim packs cannot be altered without traceable re-issue.	Sealed evidence packs identified by version and reissuance reason where applicable.

‍

Tamper evidence

Source files, computed values, and approvals are linked through cryptographic references so that any change is detectable.

‍

Sample Data Tables

Table A — Claim Summary

Headline figures for the reporting period.

METRIC	UNIT	VALUE	REFERENCE
Total Consumption	MWh	12,480	Meter ingest log
Matched Consumption	MWh	10,907	Hourly match output
Residual Consumption	MWh	1,573	Hourly match output
Hourly Match Percentage	%	87.40	Hourly match output
REGOs Retired	count / MWh	10,907 / 10,907.00	Registry retirement
Scope 2 Emissions (market-based)	tCO₂e	461.04	Emissions calc
Scope 2 Emissions (location-based)	tCO₂e	2,587.52	Emissions calc
Reporting Period	01 Jan 2025 — 31 Dec 2025

‍

Table B — Renewable Matching Summary

Monthly aggregation of consumption, matched generation, residual, and match percentage.

MONTH	CONSUMPTION (MWH)	MATCHED (MWH)	RESIDUAL (MWH)	MATCH %
Jan 2025	1,082	926	156	86%
Feb 2025	1,005	878	127	87%
Mar 2025	1,041	927	114	89%
Apr 2025	1,022.	912	110	89%
May 2025	1,014	901	113	89%
Jun 2025	1,038	880	158	85%
Jul 2025	1,066	907	159	85%
Aug 2025	1,070	929	141	87%
Sep 2025	1,051	918	133	87%
Oct 2025	1,043	918	125	88%
Nov 2025	1,022	906	116	89%
Dec 2025	1,022	901	121	88%
Total	12,480	10,907	1,573	87%

‍

Table C — Certificate Retirement Summary

Certificates retired against the reporting entity for the reporting period.

GENERATOR	TECHNOLOGY	CERTIFICATES (COUNT)	VOLUME (MWH)
Windy Ridge Power	Onshore Wind	3,420	3,420
Light Source Solar	Solar PV	4,210	4,210
Big River Energy	Hydro (run-of-river)	3,377	3,377
Total certificates retired		10,907	10,907

‍

Table D — Emissions Summary (Scope 2)

Market-based and location-based outputs derived from matched consumption and applied factors.

COMPONENT	VOLUME (MWH)	FACTOR (tCO₂E/MWH)	EMISSIONS (tCO₂E)
Matched renewable consumption (market-based)	10,907	0.00	0.00
Residual consumption (residual mix)	1,573	.29370	461.04
Scope 2 — market-based total	12,480	—	461.04
Scope 2 — location-based total	12,480	.20740	2,587.52