SSS Resource Registry

Standard Supply Service reporting

Unlock your share of your utility’s clean energy

Your utility’s standard supply already delivers carbon-free energy — hydro, nuclear, and attributes most buyers never count. The SSS Resource Registry turns that share into verifiable, audit-ready Scope 2 records so you stop over-buying for energy you already receive.

Talk to us about SSS See how it works
Pro-rataFair share of utility CFE
VerifiedThird-party methodology review
1-2 moTypical verified-report path

Why SSS exists

The clean energy is already in your power. Claim it.

For large buyers on hydro- or nuclear-heavy grids, standard supply can already be a large share — often the majority — of your carbon-free position, before any new procurement. SSS makes that share individually claimable, exclusively owned, and ready for market-based Scope 2 reporting.

Stop over-buying RECs

Credit the carbon-free energy already embedded in regulated default supply before you layer voluntary purchases.

Defensible, not approximate

Pro-rata allocation, utility attestation, and independent verification replace spreadsheet estimates that fail audit.

Baseline first, then optimize

SSS is the first rung of the procurement ladder — then voluntary RECs/GCs, then residual — so spend matches real gaps.

The problem

Most standard-supply claims break down before audit

Utilities deliver nuclear, hydro, and RPS resources through regulated rates. Without documented ownership, carbon accounting defaults to residual mix — overstating emissions and pushing buyers to purchase credits they may not need.

No clear claim method

No structured way to claim utility-level carbon-free energy on a pro-rata basis with exclusive ownership.

Manual, fragile reporting

Spreadsheet workflows that take months and collapse under finance, assurance, or board scrutiny.

Uncertain Scope 2 quality

Weak source lineage and limited third-party review against GHG Protocol market-based Quality Criteria.

Missing source lineage

Hard to prove each number ties back to inputs, allocation logic, qualification rules, and QA steps.

What SSS does

Managed reporting for standard-supply carbon-free energy

SSS is a registry + report-enablement service. We sit between utilities (data providers) and corporate buyers (report users) so standard-supply carbon-free energy becomes individually claimable and independently reviewable.

  • Standard-supply claims — claim the carbon-free energy already embedded in the power you buy under default service.
  • Pro-rata allocation — fair share based on utility CFE and your load, without resource shuffling or double-counting.
  • Qualification rules — include eligible default-service CFE; exclude green-tariff RECs and attributes already sold or claimed elsewhere.
  • Supplier-specific emission factors — construct an SSEF for the residual (non-SSS) portion of load.
  • Audit-ready outputs — documentation built for scrutiny: inputs, method, allocation, and attestation trail.
  • Independent verification — third-party methodology review so claims hold up under assurance pressure.
  • Managed service — we run the registry workflow; you get defensible results without building an internal research team.

How it works

From utility data to audit-ready reports

A structured six-step process that transforms raw utility data into defensible Scope 2 claims with full source traceability — the same depth buyers expect from a serious registry workflow.

  1. 1

    Define market boundary

    Identify your utility, service territory, and retail structure. Establish the legal boundary for SSS claims — including ISO/RTO zones, vertically integrated vs. restructured markets, and voluntary programs to exclude.

  2. 2

    Collect utility data

    Gather resource mix, generation volumes, REC retirements, and compliance filings. We use a tiered data hierarchy — supplier-attested data when available, public sources as fallback (EIA Form 861/923, state PUC filings, certificate registries, utility IRPs).

  3. 3

    Apply qualification rules

    Determine which carbon-free resources qualify. Eligible: legacy nuclear, large hydro, and RPS resources retained for default service. Excluded: green-tariff RECs, attributes sold externally, and voluntary program retirements already claimed elsewhere.

  4. 4

    Calculate pro-rata allocation

    Your share equals SSS carbon-free MWh divided by total retail sales, multiplied by your load — additive and exclusive so one customer’s claim does not diminish another’s.

    Allocation (SSS CFE ÷ Retail Sales) × Your Load = Your Claimable MWh
  5. 5

    Construct the SSEF

    Build your Supplier-Specific Emission Factor for the remaining (non-SSS) portion of load — the rate you apply for market-based Scope 2 accounting, using fuel-specific factors adjusted for residual mix.

  6. 6

    Third-party verification

    Independent verification confirms data accuracy, methodology compliance, and absence of double-counting. Result: an audit-ready report with attestation documentation and source-level traceability.

Annual by default. Optional hourly / 24×7 matching can layer historical generation profiles when you need temporal resolution — and can connect to the Granular Registry when certificate-level precision is the goal.

Data hierarchy

Tiered sources, highest confidence first

We prioritize higher-confidence data when available, fall back to public sources for preliminary estimates, and flag the tier so auditors know exactly what they’re looking at.

Tier 1

Supplier-attested

Direct utility data submission with attestation letter. Highest confidence, audit-ready.

Tier 2

Compliance filings

RPS compliance reports, EIA Form 861/923, state PUC dockets. Publicly verifiable.

Tier 3

Public proxies

Grid-average factors and residual-mix estimates. Useful for preliminary reports; flagged for verification.

1-2 weeksPublic proxy estimate
1-2 monthsVerified report path
AnnualRefresh cadence

Compared with multi-month manual utility-by-utility research and uncertain audit defensibility.

Order of operations

Claim the baseline before you buy the gap

SSS is not a substitute for voluntary procurement — it is the missing first step. Get the standard-supply baseline right, then spend on incremental clean energy where it actually closes a gap.

  1. SSS Resource Registry — claim carbon-free energy already in default utility supply.
  2. Voluntary procurement — RECs, PPAs, tariffs, and granular certificates for remaining load.
  3. Residual — apply the residual / SSEF only to what is still unmatched.

Need strategy before reporting? Advisory Services helps large loads sequence SSS, voluntary procurement, and residual accounting — and prepare for coming (proposed) Scope 2 guidance.

Who benefits

Built for stakeholders who need credible energy claims

Corporate buyers

Build defensible Scope 2 market-based claims with clear methodology and verification-ready outputs — starting from a realistic baseline, not zero. Especially valuable for semiconductor, manufacturing, data center, and other high-load operators on standard supply.

Utilities

Offer customers transparent access to utility carbon-free attributes with minimal implementation friction and a methodology designed to protect against double-counting and resource shuffling.

Sustainability teams

Move from spreadsheet-heavy workflows to repeatable reporting with stronger internal controls and a clear paper trail for assurance providers.

Finance & audit

Trace each number back to source inputs, allocation logic, qualification rules, and QA steps — so review confidence does not depend on tribal knowledge.

Why it holds up

Designed for market-based Scope 2 scrutiny

Independently reviewed methodology

Third-party verification focuses on method integrity, data quality, and absence of double-counting — not a self-attested slide.

Utility attestation trail

Where supplier-attested data is available, allocation is anchored to utility-provided inputs and documentation, not anonymous grid averages alone.

Exclusive, additive claims

Pro-rata logic is built so one customer’s claim does not invent clean energy or take another customer’s share.

Aligned with existing GHG Protocol Quality Criteria

Traceability, exclusive ownership, no double-counting, and correct market boundaries for market-based Scope 2 inventories today.

SSS improves market-based Scope 2 reporting under existing Quality Criteria. For the coming (proposed) GHGP hourly / supplier-specific revisions, pair SSS with Advisory — we help you prepare, not claim compliance with a rule that is not final.

Trust & verification

Audit-ready by design

Third-party verification Methodology traceability GHG Protocol alignment Quality-controlled data hierarchy No double-counting controls

SSS is the baseline rung of Clean Incentive’s procurement ladder. When you need hourly certificate precision beyond annual standard-supply claims, step up to the Granular Registry. For strategy and Scope 2 readiness, start with Advisory.

Claim the clean energy you already buy

Start with a conversation about your utility supply, load profile, and reporting goals. We’ll map coverage, data availability, and the right path to a verified report.

Talk to us Plan your Scope 2 strategy