Solar-OA LoadDispatch
Bankable Indian Solar PV 15-Minute Load Scheduling, Open Access Landed Cost & 25-Year Financial Analytics Platform
An institutional, executive-grade web application engineered for Indian Commercial & Industrial (C&I) power consumers, captive solar developers, institutional lenders (SBI, IREDA, PFC, REC), and corporate sustainability (RE100) teams.
The platform unifies 15-minute time-block (96-block) load dispatch, SERC Deviation Settlement Mechanism (DSM) penalties, authentic Open Access landed tariff waterfalls, Rule 3 captive compliance audits, BESS battery storage TOD arbitrage, and 25-year bankable project finance models.
🌟 Bankable & Institutional Architecture
Solar-OA-LoadDispatch/
├── index.html # 5-Tab Executive Workspace & Bankable UI Shell
├── css/style.css # Dark glassmorphism, responsive grid, and @media print DPR styles
└── js/
├── statePolicies.js # SERC Tariff Orders (CSS, AS, Wheeling, Transmission, Banking, TOD)
├── solarModel.js # 96-Block Irradiance, PVGIS Astronomical Met & Zero-Export RPR
├── bessModel.js # LFP Battery Dispatch, Midday Curtailment Capture & Peak TOD Arbitrage
├── landedCostEngine.js # Itemized Landed Cost Waterfall & Rule 3 Captive Auditor
├── financialModel.js # 25-Year Cash Flow Statement, Newton-Raphson IRR & DSCR Engine
├── meterDataParser.js # 15-Minute AMR/DLMS Smart Meter CSV Ingestion & LDC
├── annualModel.js # 35,040-Block (8,760-Hr) Annual Solar Atlas & Decarbonization (ESG)
├── projectStorage.js # Multi-Scenario Manager & Auto-Save Session Persistence
├── dprGenerator.js # Executive 10-Page Bankable DPR Dossier & CSV Model Exporter
├── dsmEngine.js # Central Dispatch Coordinator & Real-Time Settlement Engine
├── uiController.js # DOM Controller, 5-Tab Navigator, Print & Scenario Modals
└── app.js # Application Orchestrator & Chart.js Visualization Engine
💼 Core Bankability Engines
1. SERC Open Access Landed Cost Waterfall (js/landedCostEngine.js)
Calculates the authentic landed cost of solar power at the consumer's factory busbar:
$$\text{Landed Cost} = \text{Base PPA} + \text{STU Transmission} + \text{Wheeling Charges} + \text{Technical Losses} + \text{CSS} + \text{AS} + \text{Banking Surcharge} + \text{SLDC Fees} + \text{Electricity Duty}$$
- State Coverage: Maharashtra (MERC), Gujarat (GERC), Karnataka (KERC), Tamil Nadu (TNERC), Rajasthan (RERC), Uttar Pradesh (UPERC), Haryana (HERC), Telangana (TSERC), and Andhra Pradesh (APERC).
- Captive vs Third-Party: Automatic statutory exemptions for Captive / Group Captive vs Third-Party IPP.
2. Statutory Rule 3 Captive Eligibility Audit (js/landedCostEngine.js)
Validates compliance against the Electricity Rules 2005 & Amendment Rules 2023:
- Equity Ownership Criterion: Verifies that captive consumers hold $\ge 26%$ equity share capital with voting rights.
- Consumption Criterion: Verifies that captive consumers consume $\ge 51%$ of aggregate generation annually.
- Retrospective Liability Exposure: Quantifies financial clawback exposure (CSS + AS on all consumed units) in the event of captive disqualification.
3. 25-Year Project Finance & Bankability Engine (js/financialModel.js)
Full pro-forma cash flow model calibrated to standard Indian renewable lending covenants (SBI / IREDA):
- Debt-Equity & Amortization: 70:30 debt-equity gearing, 12-year door-to-door loan repayment at 9.25% p.a.
- Key Metrics:
- Project IRR (Pre-Tax) & Equity IRR (Post-Tax) via Newton-Raphson numerical polynomial solver.
- Minimum & Average DSCR: Evaluated against credit committee covenants ($\text{Min DSCR} \ge 1.20\text{x}$, $\text{Avg DSCR} \ge 1.35\text{x}$).
- Net Present Value (NPV) at 10% WACC.
- Levelized Cost of Electricity (LCOE) in ₹/kWh.
- Section 32 Accelerated Depreciation: 40% Written Down Value (WDV) tax shield modeling.
4. BESS Battery Storage & TOD Arbitrage Engine (js/bessModel.js)
- Intercepts free curtailed solar during midday (11:00–14:00) enforced by Zero-Export Reverse Power Relays.
- Discharges stored energy into the evening Time-of-Day (TOD) peak tariff window (18:00–22:00).
- Models round-trip efficiency (88%), depth-of-discharge (85%), and C-rate inverter power constraints.
5. Smart Meter 15-Minute Load Survey Parser (js/meterDataParser.js)
- Ingests raw AMR / DLMS CSV load survey exports from Secure, L&T, Schneider, and Elmeasure meters.
- Auto-detects columns, timestamps, and converts kW/kVA demand into 96-block diurnal vectors.
- Calculates Load Duration Curves (LDC) and recommends optimal BTM & OA capacity sizing.
6. 35,040-Block Annual Simulation & Decarbonization (js/annualModel.js)
- 8,760-hour / 35,040-block annual simulation incorporating Indian monsoon variations and solar insolation weights.
- Generates 12-month seasonal yield table, CUF % per season, and annual clean power share.
- Calculates Scope-2 GHG emission reductions using the Central Electricity Authority (CEA) baseline (0.82 tCO₂/MWh).
7. Bankable Detailed Project Report (DPR) & Financial Exporter (js/dprGenerator.js)
- 10-Page Executive DPR: Complete investment memorandum formatted for bank credit appraisal committees and corporate board approvals.
- Financial Model Exporter: Downloads full 25-year pro-forma cash flows and DSCR tables as CSV for spreadsheet audit.
8. Session Auto-Save & Scenario Manager (js/projectStorage.js)
- Fault-Tolerant Auto-Save: Automatically commits inputs and simulation state to
localStorage on every change, ensuring zero data loss across reboots or power outages.
- Pre-Configured Benchmark Templates: Instant loading of institutional case studies (MERC 1.5 MW Captive, GERC 3 MW + 1 MWh BESS, KERC 2 MW Third-Party).
🖥️ 5-Tab Executive Workspace
- Tab 1: 15-Min Dispatch & Timeline Player
- 96-block dispatch line chart, 15-minute timeline scrubber, real-time power flow meter, and SLDC schedule table.
- Tab 2: 25-Year Project Finance & DSCR
- Project IRR, Equity IRR, Min/Avg DSCR, NPV, LCOE, and 25-year cash flow statement.
- Tab 3: Landed Cost & Rule 3 Captive Audit
- Landed tariff waterfall table, Rule 3 compliance certificate, and retrospective CSS/AS risk metrics.
- Tab 4: BESS Battery Storage & TOD Arbitrage
- Curtailed solar capture, peak discharge volume, and annual TOD tariff arbitrage savings.
- Tab 5: Annual 35,040 Simulation & ESG
- 12-month seasonal energy balance, CUF %, and RE100 corporate decarbonization scorecard.
🚀 Quick Start
Running Locally
No build step or Node.js server required. The project is built with Vanilla HTML5, CSS3, and JavaScript:
-
Clone or open the repository:
git clone https://github.com/GirishAnanthan/Solar-OA-LoadDispatch.git
cd Solar-OA-LoadDispatch
-
Start a local HTTP server:
# Python 3
python -m http.server 8088
-
Open in your browser:
http://localhost:8088/
(Or double-click index.html to open directly).
⌨️ Shortcuts & Hotkeys
| Shortcut / Action | Description |
|---|
Ctrl + B or Alt + S or [ | Toggle Sidebar Collapse / Expand |
| Play / Pause Button | Animate 24-Hour (1 to 96) SLDC dispatch timeline scrub |
| Table Row Click | Jump timeline slider and chart highlight to that 15-minute block |
| Esc Key | Dismiss active modal (DPR, Policy, SLDC Print, Scenarios) |
| Scenario Quick Presets | Test Nominal Baseline, Machine Trip, Cloud Dip, or Demand Breach |
