Decarbonisation levers (Marketplace cards and plan)

grid t = grid MWh × grid factor; diesel t = litres × diesel factor; thermal t = gas kWh × gas factor ÷ 1000 + coal t × coal factor ÷ 1000

Summed over every metered site month.

• grid
  Grid factor (site-weighted across countries) · t / MWhIndia: 0.675 kg CO₂e / kWh · CEA CO2 Baseline Database for the Indian Power Sector v22.0 (Aug 2026), Table S (2026)↗ sourcepending review
  Factor table
• diesel
  Diesel · kg / LIndia: 2.66155 kg CO₂e / litres · DEFRA 2026: diesel (100% mineral diesel), litres↗ source
  Factor table
• gas
  Gas (÷ 10.55 to per kWh) · kg / SCMIndia: 2.116 kg CO₂e / SCM (m³) · PPAC natural gas conversion factors (via BPCL): GCV 10,000 kcal/SCM, NCV 90% of GCV; IPCC 2006 Vol.2 Ch.1/Ch.2 natural gas 56.1 tCO2/TJ (2006 / PPAC) [medium confidence]↗ sourcepending review
  Factor table
• coal
  Coal · kg / tIndia: 1,894 kg CO₂e / tonnes · India Initial National Communication coal factors (Choudhury et al. 2004) as tabulated by MoEFCC/NIES WGIA; CO2 EF consistent with CEA v22 Appendix B (95.8 gCO2/MJ NCV); IPCC 2006 Vol2 Ch2 Table 2.3 CH4/N2O (2004 (factors); 2026 (CEA corroboration)) [medium confidence]↗ sourcepending review
  Factor table

roof kWp = Σ sqft × 0.0929 × 0.4 ÷ 7.0; roof MWh = kWp × yield × 0.95 ÷ 1000; PPA MWh = (grid − roof) × 0.75 × OA-eligible share; I-REC MWh = grid − roof − PPA; roof saving = MWh × 1000 × tariff × 0.9

Same allocation as the RE calculator, at group level. RESCO mode pays tariff − RESCO tariff instead of capex.

• roof share
  Usable roof share of built-up areaIndia: 0.4 share (0-1) · Ploxi engineering assumptionpending review
  Factor table
• density
  Roof area per kWp · m² / kWpIndia: 7 m² per kWp · Ploxi engineering assumptionpending review
  Factor table
• OA cap
  Open-access share of remaining gridIndia: 0.75 share (0-1) · Ploxi engineering assumptionpending review
  Factor table
• bill offset
  Share of rooftop generation that offsets the billIndia: 0.9 share (0-1) · Ploxi engineering assumptionpending review
  Factor table
• RESCO
  RESCO offtake tariff · per kWhIndia: 5.5 INR per kWh · Ploxi declared basis: C&I rooftop RESCO offtake (kept). Research found only the CSERC levellised utility tariff ₹3.39/kWh as a proxy (low confidence).pending review
  Factor table
• O&M
  Solar O&M · per W·yrIndia: 0.93 INR per W per year · CSERC Generic RE Tariff FY2025-26 — normative O&M for solar PV ₹9.26 lakh/MW (escalating ~5.25%/yr) (2025-26) [medium confidence]↗ sourcepending review
  Factor table

cut t = diesel t × 0.6; MWh storage = litres × 0.6 × 3.5 ÷ (495 × 1000); capex = MWh × BESS price; net/yr = kWh shifted × (diesel ₹/L ÷ 3.5 − 8)

A battery stops 60% of generator starts.

• ride-through
  Share of DG burn stoppedIndia: 0.6 share (0-1) · Ploxi engineering assumptionpending review
  Factor table
• DG yield
  kWh per litre of diesel · kWh / LIndia: 3.5 kWh per litre · Ploxi engineering assumptionpending review
  Factor table
• cycles
  Battery cycles per year · cycles / yrIndia: 495 cycles per year · Ploxi engineering assumptionpending review
  Factor table
• BESS
  BESS capex · per MWhIndia: 26,000,000 INR per MWh · Ploxi declared basis: CERC 2025-26 4-hr C&I band ₹2.2–3 Cr/MWh (kept). Research found the CTUIL utility-scale benchmark ₹0.80 Cr/MWh, which the source says understates C&I (1.3–2×).pending review
  Factor table
• diesel price
  Diesel price · per LIndia: 95.2 INR per litre · Retail selling price of diesel, Delhi (IOCL/PPAC), as of 14 Oct 2026 (2026) [medium confidence]↗ sourcepending review
  Factor table

tuning cut = thermal t × 4%; saving = kWh × 4% × gas price ÷ 10.55; heat-pump cut on grid = kWh × 40% × (gas factor − grid ÷ COP 3) ÷ 1000

The card books tuning savings and the heat-pump package capex.

• tuning
  Fuel recoveredIndia: 0.04 share (0-1) · Ploxi engineering assumptionpending review
  Factor table
• electrify
  Thermal load electrifiedIndia: 0.4 share (0-1) · Ploxi engineering assumptionpending review
  Factor table
• COP
  Heat-pump COPIndia: 3 COP · Ploxi engineering assumptionpending review
  Factor table
• gas price
  Industrial gas · per m³India: 48.3 INR per m3 · Gujarat Gas (largest industrial CGD) Q4FY26 realisation per SCM — Bank of Baroda Capital result review (1 Jun 2026) (2026) [low confidence]↗ sourcepending review
  Factor table

ETP kL = (0.7 − 0.2) × 0.75 × water m³; waste cut t = waste t × 0.6 × 0.45

Every site is assumed to recycle 20% today.

• ETP target
  Recycle-to target shareIndia: 0.7 share (0-1) · Ploxi engineering assumptionpending review
  Factor table
• current
  Assumed current recycled shareIndia: 0.2 share (0-1) · Ploxi engineering assumptionpending review
  Factor table
• recoverable
  Share of the gap physically recoverableIndia: 0.75 share (0-1) · Ploxi engineering assumptionpending review
  Factor table
• divertible
  Divertible share of wasteIndia: 0.6 share (0-1) · Ploxi engineering assumptionpending review
  Factor table
• avoided
  Avoided emissions per t diverted · tCO₂e / tIndia: 0.45 tCO₂e per t · Ploxi engineering assumptionpending review
  Factor table

NPV10 = −Σ capex + Σ year-1 net × annuity(10 yrs, r)

Year-1 net cash repeated for 10 years, discounted at the display country's rate.

• r
  Discount rate (fallback 10%, annuity 6.1446) · %India: 9.21 percent · CSERC Generic RE Tariff FY2025-26 — post-tax WACC discount factor for solar PV (70:30 debt-equity, 10.99% interest, 14% post-tax ROE) (2025-26) [medium confidence]↗ sourcepending review
  Factor table