Electrical Infrastructure & Solar Sizing Suite.
Interactive calculation tools engineered for Kerala conditions. Estimate solar generation, transformer demand, capacitor bank requirements, and generator capacity grounded in Central Electricity Authority (CEA) standards and KSEB tariffs.
Technical Calculation Principles
How is Solar PV Sizing Calculated for Kerala?
Kerala receives approximately 4.0 to 4.4 Peak Sun Hours (PSH) per day. A well-engineered 1 kWp on-grid photovoltaic system typically produces 115 to 120 kWh (units) monthly. Our sizing model divides your monthly electricity consumption by 115 kWh to find the optimal system capacity to offset 100% of your energy bill without excess uncredited export.
Microinverters vs. String Inverters: Which is Better?
String inverters are cost-effective and highly efficient for uniform, unshaded rooftops. However, if your roof suffers from tree shading, water tanks, or complex multi-pitched orientations (such as traditional Kerala sloping tiled roofs), microinverters offer module-level MPPT, preventing shaded panels from dragging down the entire array's output.
Why Does Low Power Factor Incur KSEB Penalties?
Inductive loads (like factory motors, chillers, and transformers) draw reactive power (kVAr), lowering the power factor. KSEB penalizes consumer accounts operating below 0.90 PF because it causes higher line losses on the utility grid. Installing an Automatic Power Factor Correction (APFC) capacitor bank eliminates penalties and earns monthly billing incentives.
How is Substation Transformer Sizing Determined?
Connected equipment rarely runs simultaneously at full load. We apply a Diversity Factor (typically 70% to 80%) to the total connected load in kW, convert to kVA based on operating power factor, add a 20% future safety margin, and select the next standard rating according to Indian Standard IS 2026 distribution transformer guidelines.