We built a solar monitoring and energy management platform for a rooftop solar installer operating across 200 commercial installations in Gujarat and Rajasthan. Before: each installation had its own inverter app (Growatt, Solis, Huawei — all different). The O&M team couldn't see all sites in one view. Fault detection relied on customer complaints. Energy generation data was available but nobody analyzed it. After: unified dashboard aggregating all inverter brands via APIs, automated fault alerts (panel degradation, inverter trips, communication failures), generation vs expected performance tracking, and automated monthly reports to customers showing savings. Customer churn dropped from 15% to 3% annually, and the team detected and fixed underperformance issues that were costing customers an average of ₹25,000/year per site.
What We'll Cover
Types of CleanTech Software
| Type | Primary Users | Key Features | MVP Timeline |
|---|---|---|---|
| Solar monitoring platform | Solar installers, O&M teams, asset owners | Multi-site dashboard, inverter integration, fault detection, performance analytics, customer reports | 3-5 months |
| EV charging management | Charge point operators, fleet managers | Charger monitoring (OCPP), pricing, user app, payment, load management | 4-6 months |
| Carbon accounting / ESG | Corporate sustainability teams | Emission calculation (Scope 1-3), reporting frameworks (BRSR, GRI, CDP), reduction tracking | 3-5 months |
| Energy management (BEMS) | Commercial buildings, industries | Real-time energy monitoring, demand forecasting, peak shaving, equipment scheduling | 4-6 months |
| Renewable energy trading | RE generators, DISCOMs, open access consumers | Green energy certificates, power scheduling, banking, open access management | 5-8 months |
Solar and Renewable Energy Platforms
Solar Monitoring Architecture
- Inverter data collection: Each inverter brand has its own API/protocol — Growatt (REST API), Huawei (FusionSolar API), Solis (Ginlong API), Fronius (Solar API), Microtek, Luminous (often Modbus). Build adapter pattern: one standardized data model, brand-specific adapters. Polling every 5-15 minutes for commercial, hourly for residential
- Performance monitoring: Track actual generation vs expected (based on panel capacity, location, weather, tilt angle). Performance Ratio (PR) is the key metric — anything below 75% indicates an issue. Specific yield (kWh/kWp) for benchmarking across sites
- Fault detection: Automated alerts for: inverter offline, string underperformance (one string producing 20% less than siblings = dirty/shaded/damaged panel), grid fault, communication failure. Use ML for anomaly detection once you have 6+ months of data — detect slow degradation that rule-based alerts miss
- Customer reporting: Monthly PDF/email report showing: energy generated, money saved, CO2 avoided, system health score, any issues detected and resolved. This report justifies the customer's AMC payment and prevents churn
EV Charging Infrastructure Software
India targets 30% EV penetration by 2030. The charging infrastructure is being built right now — and every charger needs software. The standard protocol for EV charger communication is OCPP (Open Charge Point Protocol).
- OCPP integration: OCPP 1.6J (JSON over WebSocket) is the current standard. OCPP 2.0.1 is the future (better security, smart charging). Your platform connects to chargers from any manufacturer that supports OCPP. Manage firmware updates, remote start/stop, configuration changes
- User app: Find nearby chargers (map with availability), check connector type (CCS2, Type 2, CHAdeMO, Bharat DC/AC), see pricing, start/stop charging, pay via UPI/card/wallet. Real-time charging status with estimated time to full. Booking/reservation for high-demand locations
- Pricing and billing: Per-kWh pricing (most common), time-based (for slow chargers), flat-fee per session, or hybrid. Dynamic pricing: higher during peak grid hours, lower during off-peak. Fleet discounts. Corporate billing with consolidated invoices. GST calculation and invoicing
- Load management: Multiple chargers at one location sharing limited grid power. Smart load balancing: if 4 chargers share 100 kW grid connection, distribute based on priority (almost-full cars get less, nearly-empty cars get more). Grid demand response: reduce charging load during peak grid demand in exchange for DISCOM incentives
Carbon Tracking and ESG Reporting
| Scope | What It Covers | Data Sources | Difficulty |
|---|---|---|---|
| Scope 1 (direct) | Own operations: fuel combustion, company vehicles, refrigerants | Fuel purchase records, vehicle logs, equipment inventory | Low — data usually available internally |
| Scope 2 (electricity) | Purchased electricity, heat, steam | Electricity bills, grid emission factors (CEA publishes India-specific factors) | Low — straightforward calculation |
| Scope 3 (value chain) | Supply chain, employee commute, business travel, product use, end-of-life | Supplier data, travel records, procurement data, LCA databases | High — requires supplier engagement, estimates, assumptions |
ESG Reporting Frameworks for India
- BRSR (Business Responsibility and Sustainability Reporting): Mandatory for top 1,000 listed companies from FY23. SEBI mandated. Covers ESG disclosures, carbon footprint, energy consumption, water, waste. Auto-generate BRSR reports from collected data
- GRI (Global Reporting Initiative): International standard used by companies with global operations. More detailed than BRSR. Required by many international investors and buyers
- CDP (Carbon Disclosure Project): Questionnaire-based disclosure to investors. Score from A to D-. Being on CDP's A-list is prestigious. Your platform should map internal data to CDP questionnaire format
Smart Grid and Energy Management
- Building Energy Management (BEMS): Real-time monitoring of HVAC, lighting, elevators, UPS, DG sets. Schedule equipment based on occupancy (IoT sensors or calendar integration). Automated demand response during peak tariff hours. Typical savings: 15-30% on electricity bills for commercial buildings
- Industrial energy optimization: Monitor per-machine energy consumption. Identify energy-intensive processes. Shift flexible loads to off-peak hours (ToD tariff optimization). Track specific energy consumption (kWh per unit produced) as a KPI
- Solar + battery + grid optimization: For prosumers (producers + consumers): when to use solar directly, when to charge battery, when to export to grid (net metering), when to import from grid. Optimization algorithm based on: solar forecast, load forecast, battery state of charge, grid tariff schedule
India CleanTech Landscape
- Net metering and open access: Net metering rules vary by state — some limit to 500 kW, others to 1 MW. Open access (buying power from a specific generator) has cross-subsidy surcharges that vary by state. Your energy platform must handle state-specific regulatory rules
- Green energy certificates: RECs (Renewable Energy Certificates) and carbon credits are tradable on Indian Energy Exchange (IEX). Track generation → certificate issuance → trading → retirement. Emerging market for voluntary carbon credits from international buyers
- DISCOM integration: State electricity distribution companies (DISCOMs) have varying levels of digitization. Some accept open access applications digitally, others require paper. Net metering billing reconciliation is often manual. Build adapters for DISCOM-specific processes
- PLI for solar manufacturing: Government's Production Linked Incentive scheme for solar cell/module manufacturing. If you're building for solar manufacturers, track production output, domestic content requirements, and PLI compliance
- EV charging standards: India uses Bharat DC-001 (15 kW, unique to India), CCS-2 (global standard for DC fast charging), and Type-2 AC. Your EV platform must support all three connector types. BIS standards for charger safety and certification
Frequently Asked Questions
How much does cleantech software cost to build?
Solar monitoring platform (multi-brand inverter): ₹20-40 lakh (3-5 months). EV charging management with OCPP: ₹30-60 lakh (4-6 months). Carbon accounting and ESG reporting: ₹25-50 lakh (3-5 months). Building energy management: ₹30-60 lakh + IoT hardware (4-6 months). Smart grid/energy trading: ₹50-90 lakh (5-8 months). IoT sensors and hardware are additional for monitoring platforms.
What's the biggest cleantech software opportunity in India right now?
EV charging management — India is building charging infrastructure from scratch, and every charge point operator needs a management platform. Solar O&M monitoring is the second biggest — India has 80+ GW of installed solar capacity and most small installers lack good monitoring tools. Carbon accounting for BRSR compliance is the third — 1,000+ listed companies now need ESG reporting, and most don't have the tools to do it efficiently.
Do I need IoT hardware expertise to build cleantech software?
Not necessarily. Solar monitoring connects to existing inverters via APIs (no custom hardware). EV charging uses OCPP (standard protocol, no custom hardware). Carbon accounting is pure software. Only building energy management and industrial monitoring require custom IoT hardware — and even there, you can partner with hardware manufacturers (Schneider, Siemens, or Indian IoT companies) and focus on the software layer.