Solar Savings Calculator for Madhya Pradesh

For a residential 3 kW system after the PM Surya Ghar subsidy, payback in MP is typically 3.5 to 5 years depending on whether you pay cash, take a loan, and whether you pre-pay the subsidy against the loan principal. For a commercial 30 kW system without subsidy but with accelerated depreciation, payback is 2.7 to 4 years. These figures use current MP residential and LT-commercial tariffs and assume no significant grid tariff hikes; if tariffs rise (they have averaged 4 to 6%/year), payback shortens.

Yes, automatically — for residential systems sized 1 to 3 kW. The calculator subtracts ₹30,000 (1 kW), ₹60,000 (2 kW), or ₹78,000 (3 kW) from your turnkey cost to show the net upfront. Systems above 3 kW receive the 3 kW cap. State-level top-ups (where available) are not auto-applied since they vary by district and consumer category, so your final number could be slightly better than what the tool shows.

For residential users we apply the current MPERC slabs: ₹4.05/kWh up to 50 units, ₹5.18/kWh for 51 to 150, ₹6.50/kWh for 151 to 300, and ₹6.69/kWh above 300 — plus fixed charges of ₹70 to ₹100 per kW of sanctioned load. For LT-commercial we model ₹8.50/kWh and for HT-industrial ₹7.50 to ₹9.50/kWh depending on the slab. We update these whenever MPERC publishes a new tariff order, typically once per fiscal year.

Within roughly ±10% of what you will actually save once installed. The largest variance comes from your own consumption pattern (daytime vs. evening load), the specific roof orientation and tilt, any partial shading from neighbouring buildings or trees, and whether your DISCOM grants you a bidirectional meter on the first feasibility check. Our site-visit team measures these on the ground before we send a final quote.

Solar irradiation in MP varies meaningfully across districts: Khargone, Barwani, and Indore receive about 5.4 to 5.5 kWh/m²/day, while Jabalpur, Rewa, and Satna are closer to 5.0 to 5.1. That's a real 8 to 10% difference in annual generation between a panel in Khargone and the same panel in Rewa. National calculators that use a single India average will overstate or understate your generation by that margin.

Yes. Excess units exported to the grid are credited at the MPERC-approved rate of approximately ₹2.14/kWh (FY 2025-26) and rolled forward against your future bills. Annual net excess is settled in cash at the same rate at the end of the financial year. The calculator factors this into your monthly cash savings projection rather than treating exported units as zero-value.

For systems up to roughly 100 kW (LT-commercial), yes — the calculator gives a directionally accurate first read that matches what we'd quote on a site visit. For HT-industrial systems above 100 kW, ground-mount projects, or anything that involves Open Access wheeling, you should request a custom analysis from our C&I team via the C&I solar calculator — those projects involve PPA structuring, contracted-demand modelling, and CSS waiver eligibility that need a real-world feasibility study.

Three usual reasons. First: the lower quote may be using non-ALMM panels, which disqualifies you from the PM Surya Ghar subsidy and voids most performance warranties. Second: many local quotes omit the bidirectional meter, MNRE-registered installer fee, structural mounting, or grounding kit, all of which appear on the final invoice anyway. Third: cheaper string inverters with no per-panel monitoring make warranty claims and partial-shading diagnosis very difficult. Always compare line-item turnkey quotes, not headline numbers.

Conservatively, no. The default 25-year cumulative savings figure assumes flat tariffs at today's rates. In reality, MPERC has raised residential tariffs at an average of 4 to 6%/year over the last decade, and most analysts forecast continued increases through 2035 as DISCOMs absorb capacity-charge pressure. A 5%/year tariff escalation roughly doubles the 25-year cumulative savings versus the flat-tariff baseline. We deliberately underclaim — we'd rather you be pleasantly surprised in year 25.

For r-solar installations, the IoT-monitored inverters report per-panel generation in real time on the r-solar connect app (Farmkart Online Services Pvt Ltd, Google Play). If a panel underperforms by more than the manufacturer's degradation curve, we replace it under warranty. We see the same telemetry you do, so any persistent underperformance triggers a service ticket from our side first — you should not have to call us about it.