NCRB Renewable Energy Credits (RECs) Whitepaper
Version 1.3 | February 2026
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Abstract
This whitepaper presents Natural Capital ReBank's (NCRB) approach to tokenizing Renewable Energy Credits (RECs) on blockchain. The REC market, valued at $200 billion and growing at 12% CAGR, is the primary mechanism for corporate renewable energy procurement and state Renewable Portfolio Standard (RPS) compliance. NCRB provides a blockchain-based infrastructure to tokenize RECs from solar, wind, hydro, and geothermal sources with full registry-backed serial number tracking and Green-e Energy certification support.
1. About NCRB
Natural Capital ReBank (NCRB) is a comprehensive blockchain-based platform that tokenizes Natural Capital assets across multiple asset classes. The platform addresses the $10 trillion Natural Capital market opportunity by solving critical pain points: lack of liquidity, opaque pricing, fragmented markets, inconsistent quality standards, and high transaction costs.
Through blockchain technology and industry-aligned assessment frameworks, NCRB delivers:
- Instant settlement via on-chain transactions
- Transparent pricing via real-time oracles
- Fractional ownership through ERC-7943 uRWA tokenization
- Automated compliance via smart contract governance
- Verifiable asset quality through programmatic scoring
2. Renewable Energy Credits Market Overview
Market Size: $200 billion (2025)
Growth Rate: 12% CAGR
NCRB Addressable Market: $100 billion
2.1 Sub-Types
- Solar RECs (SRECs)
- Wind RECs
- Hydroelectric RECs
- Geothermal RECs
2.2 Supported Registries
- APX (NEPOOL GIS, PJM-GATS)
- M-RETS (Midwest)
- WREGIS (Western US)
- NAR (North Carolina)
2.3 Price Aggregators
- APX Marketplace
- M-RETS Trading Platform
- REC Market
- CoinGecko (tokenized RECs)
3. Quality Bands & Pricing
REC quality is determined by technology type, state compliance class, and whether the REC is bundled or unbundled from physical electricity delivery:
| Quality Band | Class/Tier | Description | Price Range (2025) | NCRB Tokenization |
|---|---|---|---|---|
| Class I (Solar) | State compliance tier | State-mandated solar requirements (MA, NJ, DC) | $50–$400/MWh | ✅ Eligible |
| Class II (Non-Solar) | State compliance tier | Wind, hydro, biomass for state RPS | $20–$50/MWh | ✅ Eligible |
| Voluntary Market | Non-compliance, Green-e certified | Corporate sustainability programs | $1–$15/MWh | ✅ Eligible |
| Bundled RECs | Delivered with electricity | Physical delivery + environmental attributes | $50–$100/MWh | ✅ Preferred |
| Unbundled RECs | Separated from electricity | Environmental attributes only | $1–$50/MWh | ✅ Eligible |
| Offshore Wind | Premium Class II (MA, RI) | High capacity factor, limited supply | $30–$60/MWh | ✅ Eligible |
4. Token Issuance Criteria
To qualify for NCRB tokenization, RECs must meet all of the following criteria:
- Registry certification (APX, M-RETS, WREGIS, or NAR)
- Generation within 12 months (vintage year requirement)
- Green-e Energy Certification for voluntary market RECs
- Unique serial number with no double-counting
- Eligible renewable energy source under state RPS definitions
5. Quality & Impact Framework
NCRB employs a programmatic quality scoring system (0–100) across six weighted dimensions:
| Dimension | Weight | Key Inputs |
|---|---|---|
| Technical Quality | 25% | Technology type, capacity factor, registry certification |
| Additionality | 20% | New generation additionality, market-based procurement |
| Permanence | 20% | Vintage year compliance, serial number uniqueness |
| Certification Level | 15% | Registry tier, Green-e certification, state RPS eligibility |
| Social Impact | 12% | Local jobs in renewable energy, community benefit agreements |
| Vintage/Condition | 8% | Generation year, registry data freshness |
5.1 Credit Rating Bands
| Score Range | NCRB Band | Industry Alignment | Market Interpretation |
|---|---|---|---|
| 85–100 | AAA / Premium | Class I Solar, bundled, Green-e certified | Institutional-grade, compliance eligible |
| 75–84 | AA / High | Class I/II, registry-certified, current vintage | High-quality compliance & voluntary |
| 65–74 | A / Standard | Voluntary market RECs, Green-e certified | Tradable for corporate sustainability claims |
| 50–64 | BBB / Review | Unbundled, older vintage, limited documentation | Price pressure, limited buyers |
| <50 | Not Eligible | Non-certified or expired vintage | Not eligible for tokenization |
6. Standards & Frameworks Alignment
NCRB RECs are designed for corporate renewable energy claims:
| Framework | Purpose | NCRB Alignment |
|---|---|---|
| RE100 | 100% renewable electricity commitment | REC procurement matching RE100 requirements |
| GHG Protocol Scope 2 | Market-based emission accounting | RECs provide zero-emission electricity accounting |
| Green-e Energy | Consumer-facing renewable claim | Certified RECs eligible for Green-e claims |
| EACs (Energy Attribute Certificates) | European renewable claim standard | NCRB supports cross-border EAC frameworks |
7. SDG/ESG Impact Tracking
NCRB tracks the following impact metrics for RECs:
- Clean Energy Generated: MWh per year by technology type
- GHG Avoidance: tCO2e avoided per MWh relative to grid average
- Local Jobs: FTE jobs in renewable energy generation and maintenance
- Grid Decarbonization: Regional grid carbon intensity improvement
CSRD/TNFD Mapping: REC metrics align with CSRD E1 (Climate) and TNFD Climate Impact and Risk & Resilience pillars.
8. Token Economics
Token Type: ERC-7943 uRWA (per asset certificate)
Backing: 1:1 with verified REC certificate (1 token = 1 MWh)
Supply: Minted on governance approval, burned on redemption
Symbol: NC-REC{ID}
8.1 Distribution
| Recipient | Allocation | Vesting |
|---|---|---|
| Asset Owner | 70% | Immediate |
| Registry Partner | 10% | 6-month vesting |
| NCRB Platform | 10% | 12-month vesting |
| Third Party (optional) | 10% | Configurable |
8.2 Fee Structure
| Fee Type | Amount |
|---|---|
| Trading fees | 2.5% of transaction value |
| Insurance fees | 1.5% annually |
| NCRB Treasury | 1.0% of asset |
8.3 BaaS Service
- BaaS Licensing: Institutional rates available for quotation
9. Buyer Credit Workflow
- Assess Renewable Energy Needs — Determine MWh volume and applicable standard (RE100, GHG Protocol Scope 2)
- Select REC Class — Choose technology and state class matching compliance or voluntary requirements
- Review Documentation — Access registry serial numbers, generation records, Green-e certification
- Retire RECs — On-chain retirement with serial numbers and timestamps
- Generate Reports — Export GHG Protocol Scope 2 market-based accounting reports, CDP, CSRD disclosures
10. Legal Disclaimer
This document is for informational purposes only and does not constitute financial, investment, or legal advice. Natural Capital ReBank makes no representations or warranties regarding the accuracy or completeness of the information contained herein. Participation in NCRB markets is subject to applicable laws and regulations in the user's jurisdiction.
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