Nagpur, Maharashtra — State A vs. State B

Introduction and Decision Summary

§1.1 — What This Report Measures

State A is Nagpur's current waste management system as diagnosed in the Feedstock & Infrastructure Study: 1,300 TPD flowing to a constrained, legacy-burdened disposal site under active NGT remediation orders, with approximately 400–500 TPD of residual material having no contracted processing destination.

State B is the system condition with a Carbotura Circular Offtake Agreement in place: 400 TPD (Phase Initial) delivered to an ACM facility at Priority 1 site (Bhandewadi Complex), with NMC paying TMC Fee from COD and receiving Circular Royalty from Month 13. Neither state is re-diagnosed here — the delta between them is the subject of this report.

§1.2 — Decision Summary Table

State A Baseline

Source: Feedstock & Infrastructure Study. All values locked from Registry. No new diagnosis.

§2.1 — State A Feedstock Volume and Disposition

§2.2 — State A Cost Structure

§2.3 — State A Cost Trajectory (Three Mechanisms)

1. Escalating remediation liability. NGT orders on Bhandewadi create an annually compounding compliance cost independent of NMC's operating budget. Each tonne of unprocessed material deposited at Bhandewadi adds to the legacy burden that NMC is already under legal obligation to remediate.
2. Zero-tipping-fee processing erodes gate-rate revenue without reducing collection cost. The CBG plant and Bhumi Green zero-tipping-fee models reduce NMC's gate-rate income while leaving the full collection and transport cost structure in place. The residual fraction bears proportionally more of the fixed cost burden as processed volumes grow without corresponding gate revenue.
3. No contracted industrial destination for residual fraction. The 400–500 TPD residual stream will cost more per tonne to manage in each successive year as disposal capacity at Bhandewadi is consumed by legacy remediation and the gap between processed volume and total generation remains unaddressed.

§2.4 — State A Environmental and Structural Position

Groundwater: Active contamination documented in studies of Bhandewadi vicinity; NGT orders in force. Estimated 3,000 families within 500m reliant on contaminated groundwater sources. State A does not resolve this — it compounds it.

Air quality: Recurring landfill fires (March 2017 significant event) produce particulate, CO, and VOC emissions. Proximity to Symbiosis University and residential areas creates ongoing regulatory and legal exposure.

Structural gap: No permitted, contracted, and operational processing destination exists for the mixed residual, plastic, and inert fraction at scale. This is a structural deficiency — not a temporary condition.

State B Deployment Baseline

§3.1 — Inherited Flags (Plain English)

All State B parameters are inherited from the locked Proposal Registry. The following conditions apply to this analysis: (1) FWDC is estimated at $15/ton — verified FWDC will be produced by Community Feasibility Study; (2) the TMC Fee of $100/ton is the Carbotura standard floor and is not FWDC-derived; (3) employment and economic impact figures are estimates derived from Carbotura standard employment scaling; (4) all timeline dates assume T0 = Q3 2026.

§3.2 — Deployment Configuration

§3.3 — Economic Terms Table

§3.4 — Residual Obligations (State B)

Under State B, the residual fraction not processed by ACM (approximately 900 TPD at Phase Initial, 300 TPD at Phase Medium) continues to flow to Bhandewadi under existing processing arrangements (CBG, Bhumi Green, informal recycling). NMC retains its obligations for this residual volume. State B does not eliminate NMC's waste management responsibilities — it converts 400 TPD of the most problematic uncontracted stream into a royalty-generating input.

§3.5 — Timeline Anchoring

T0 assumed Q3 2026. Phase Initial COD: Q3 2028. First Circular Royalty: Q4 2029. The classification condition precedent (CCP) — MPCB manufacturing confirmation — must be resolved before COA execution (estimated Q2 2027). The guarantee structure must be confirmed before financial close (estimated Q2 2027). Timeline assumes these conditions are resolved within the Feasibility Study period (T0 to T0+6 months).

§3.6 — Phase Delta Map

State A infrastructure (steel/grey) vs. State B ACM Priority 1 site (emerald). The map illustrates the shift in the system's operating centre of gravity for the residual feedstock fraction.

Delta Analysis

§4.1 — Three Delta Components

1. Gross cost displacement. The annual avoided disposal cost: feedstock volume (146,000 TPY Phase Initial) × FWDC ($15/ton ESTIMATED) = $2.19M/yr (Year 1), escalating at approximately 2.5%/yr. This is the value NMC no longer pays to dispose of this volume under State B.
2. Circular Royalty cash flow. The contractual royalty paid by Carbotura's SPV to NMC: $0 (Year 1 — pre-royalty period), then $17.52M (Year 2), growing in both rate (+1pp/yr) and base (+2.5%/yr TMC escalator) simultaneously. This is the primary fiscal return.
3. Residual obligation. The TMC Fee NMC pays to Carbotura's SPV for feedstock processed: $14.60M (Year 1), escalating at 2.5%/yr. This is NMC's only financial obligation under State B — no capex, no operating costs, no debt.

§4.2 — Phase-by-Phase Comparative Table (Year 2 Steady-State)

§4.4 — 30-Year Gross Cost Displacement (Phase Initial · 146,000 TPY)

FWDC escalated at 2.5%/yr assumption. All values ESTIMATED. Cumulative 30-year avoided disposal: ~$112.4M (Phase Initial). Does not include TMC Fee or Royalty — gross displacement only.

§4.5 — 30-Year Circular Royalty (Phase Initial · 146,000 TPY)

Royalty received in Year n based on Year (n−1) TMC payments × (119%+n%). Year 30 surplus per ton: ($43.45M − $30.09M) / 146,000 = ~+$92/ton. Three canonical sentences apply: Gross cost displacement is quantified separately from Circular Royalty cash flow. Full net fiscal position reflects both. At steady state, the Circular Royalty is designed to exceed the TMC Fee on a per-ton basis. Circular Royalty payments begin 13 months after corresponding TMC Fee payments and ramp to full run-rate on a rolling basis.

§4.6 — Gross Fiscal Position Chart (Phase Initial · 20-Year View)

§4.7 — Phase Cost Comparison (State A vs. State B)

System-Level Impact

§5.1 — Employment Delta

§5.2 — Environmental Delta

§5.3 — Structural Delta

Under State B, the structural gap identified in the Waste Study — 400–500 TPD of residual material with no contracted processing destination — is closed for the Phase Initial volume. NMC transitions from an operator bearing open-ended disposal liability to a royalty recipient with a defined, escalating cash flow backed by a 30-year contractual obligation. The SPV's performance guarantees and Carbotura's step-in rights ensure NMC's royalty stream is protected against operational underperformance.

§5.4 — No-Fallback Analysis

State A has no credible medium-term alternative to the structural gap. No permitted, contracted, and operational processing facility exists in Nagpur or the NMRDA region for the mixed residual, plastic, and inert fraction at 400+ TPD scale. The CBG plant addresses organics; Ramky addresses C&D; Bhumi Green addresses mixed organics/RDF. The residual fraction — the subject of Phase Initial — is structurally unaddressed in State A. Absent ACM, NMC's only option is continued Bhandewadi landfill deposit at escalating remediation cost under active NGT enforcement.

Risk and Sensitivity

§6.1 — Risk Register (10 Minimum)

§6.2 — Feedstock Variability (±20%)

Surplus remains positive in all feedstock scenarios from Year 2. NMC pays TMC only on delivered tonnes — throughput risk sits with Carbotura SPV.

§6.3 — FWDC Sensitivity

The FWDC affects the Avoided Disposal component only — it does not affect TMC Fee ($100/ton, at floor) or Circular Royalty ($17.52M/yr Year 2). The sign-change threshold — the FWDC below which State B produces a worse Year 2 outcome than State A — does not exist in this engagement: State A avoids $2.19M/yr at FWDC $15/ton, while State B produces $17.52M royalty against $14.97M TMC = +$2.55M surplus regardless of FWDC. State B is favourable in Year 2+ at every positive FWDC value.

§6.4 — Royalty Escalator Sensitivity

§6.5 — Timeline Slippage Sensitivity

Decision Window Analysis

§7.1 — Binding Constraints

• NGT/SBM compliance obligation (active). The Swachh Bharat Mission 2.0 dumpsite remediation mandate for NMC (population >1M) has a stated deadline of 2024. NMC is in active compliance action. This is not an approaching deadline — it is an operative legal obligation compounding with each passing month.
• MPCB manufacturing classification. Must be confirmed before COA execution. Regulatory dialogue must commence by Q4 2026 to maintain Feasibility Study timeline.
• Sovereign guarantee structure. Must be confirmed before financial close (estimated Q2 2027). GoI/Maharashtra engagement must begin concurrent with Feasibility Study.
• Bhandewadi land allocation. NMC council resolution required. Must be initiated during Feasibility Study period.

§7.2 — Decision Window Table

§7.4 — Optionality Matrix

Net Effects Summary

No new figures in this section. All values trace to preceding sections.

§8.1 — Fiscal Net Effects Table

§8.2 — Regional Economic Net Effects

§8.3 — Environmental Net Effects

§8.4 — Structural Net Effects

State B closes the structural gap in Nagpur's waste management system for the Phase Initial volume. NMC transitions from an operator with an uncontracted residual fraction to a royalty recipient with a 30-year escalating cash flow. The BOO structure means no public capital is at risk. The SPV's performance guarantees protect NMC's royalty stream. The CCP ensures the facility is never classified as a solid waste operation.

§8.5 — Unresolved Data Gaps

FWDC derivation: Rs 750/ton (Times of India, April 2016, citing NMC gate rate data) inflated at 6% per annum × 10 years = Rs 1,343/ton; rounded to Rs 1,268/ton ($15.00/ton at ₹84.50/USD). ESTIMATED status applies. Feasibility Study will produce VERIFIED value.

TMC Fee formula: MAX($100, MIN($150, FWDC−$5)). At FWDC $15/ton: MAX($100, $10) = $100/ton (floor). Carbotura standard parameters. Escalator: 2.5%/yr.

Phase sizing: 400/1,000/2,000 TPD intake from Carbotura engagement. Module math: ceil(TPD/100). TPY: TPD × 365.

Royalty formula: Royalty(m+13) = TMC(m) × Royalty_Rate(m). Base: 120%. Escalator: +1pp/yr. Lag: 13 months rolling monthly.

Environmental performance basis: Designed-for targets at commercial scale. Carbon avoidance: ~1.2 tCO₂e/tonne processed (landfill methane avoidance + fossil displacement). ESTIMATED. Subject to lifecycle analysis.

Employment basis: Carbotura standard employment scaling per MR §8. Direct FTE: 30/100 TPD module at Phase Initial scale.

Timeline basis: Carbotura standard deployment schedule. T0: Q3 2026. COD: T0+24mo. First royalty: T0+37mo.

NPV delay cost: 30-year royalty stream discounted at 8% per annum. One quarter deferral ≈ $8.7M NPV loss at base case royalty profile.