Smart Energy Tools

Decide smarter. Measure better. Calculate with clarity.

Should you go solar?

Indicative savings, residential central subsidy and simple payback.

Residential subsidy uses the standard national PM Surya Ghar schedule, assuming full eligibility and no special category adjustment. No state subsidy is included. Commercial/industrial depreciation is an illustrative tax shield, not a subsidy or guaranteed deduction.
Want a system size matched to your bill and roof? Request a Wattscore solar proposal

How much should your solar plant generate this month?

The expected output is calculated automatically from system capacity, age and the selected season. Compare it with actual meter or inverter readings.

Advanced benchmark assumptions (optional)

Default of 1,450 kWh/kWp/year is an illustrative reference for a reasonably configured system, not a location-specific irradiance calculation.

Seasonal monthly allocation is a rough illustration, not verified Jaipur or any other city's irradiation profile. Plant location is recorded for the report but does not yet change the benchmark. Do not interpret the estimate as a guaranteed production level.
STEP 2 - ENTER YOUR REAL SOLAR PRODUCTION

Enter units for the same selected month or full 12-month period. Expected generation and your shortfall will update automatically.

Expected generation benchmark

Your comparison and financial shortfall

Generation below expectation? Request a professional solar plant health check

Solar EPC GST reverse invoice calculator

Calculate the qualifying 70% goods / 30% services deemed value split. Draft calculation only — not an issued tax invoice.

Seller / issuing business details

All seller and buyer fields are optional. Enter only the details you need; unfilled fields are left blank in the draft PDF.

Invoice particulars

Optional payment and invoice details

This tool is a draft valuation aid only. The item names and codes reproduce the uploaded Wattscore sample exactly: Supply of SOLAR PV System (HSN 8541) and Installation & Commissioning of Solar PV System (SAC 9987). Confirm applicable HSN/SAC, contract eligibility, place of supply and notification rates before issuing a legal tax invoice. Public visitors cannot issue invoices in Wattscore's name.
Want to understand more about solar energy? Explore Wattscore Insights
Copyright Wattscore Energy Pvt. Ltd. | Estimates are informational and should be independently verified before investment, tax filing or contracting. All calculations run locally in your browser.