Precision-engineered calculators built on IEC, IS, and CEA standards — covering financial modelling, system sizing, electrical design, BESS, and site execution for India's solar industry.
ROI, LCOE, IRR, NPV, 25-year cashflow projections, subsidy & CFA analysis — all on MNRE benchmarks.
Sizing, electrical design, performance ratio, BESS — every IEC / IS / CEA formula built in.
Rooftop layout, PSS substation, shadow analysis, BOQ estimation — from design to handover.
Engineering domains
Design standards
Free forever
Cashflow horizon
IEC 61724
IS 732
IS 3043
CEA Grid
PVWatts
NFPA 855
Calculate return on investment with 25-year projections, NPV, and IRR analysis
Analyze grid export benefits and understand net metering impact on your savings
Compare loan, lease, and purchase options with interest rates and tax benefits