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SolCall

Delhi Solar Reference Price
DERC Fitted Multiplier (m): 1.3696 T1 Govt
BRPL PPAC Surcharge: 10.00% (Jun 2026) T1 DISCOM
Scheme Loan Rate: 6.00% (Repo 5.5% + 0.5%) T1 RBI
Total Delhi Applications: 81,312 T1 Portal
Min Solar Yield: 1,466 kWh/kWp/yr T2 World Bank
Reference Median (3 kW): ₹2,27,500 T3 Market n=2
Direct Math Engine

Check With My Bill

Calculated using DERC progressive tariff slabs, gross-to-net power subsidies, and net metering.

Typical 2-3 BHK in Delhi uses 400–600 units during summer.
DERC Regulation 5 limits solar capacity to sanctioned load.
Financial Decision
GO

Strong economic case: Spread >= ₹1/unit, discounted payback <= 7 years, and healthy EMI coverage.

Bill Before Solar
₹2,705
Monthly average
Bill With Solar
₹624
After net netting
Net Monthly Savings
+₹2,081/mo
Direct electricity offset
Year 1 Net Savings
₹24,974
Annual savings
Gross Benchmark System Cost (PMSG Standard) ₹1,45,000
Central PM Surya Ghar CFA Subsidy (₹30k/kW up to 2kW + ₹18k 3rd kW) -₹78,000
Delhi State Capital Subsidy (₹26k/kW, max ₹78k, capped at cost − central) -₹67,000
Net Consumer Cost (Out-of-Pocket Investment) ₹0.00
Discounted Payback
0.0 yrs
Hurdle target: ≤ 7.0 yrs
25-Year Net Profit (NPV)
₹2,82,259
Discounted at 6.00% loan rate
Unit Value Spread
+₹5.44/kWh
Value/unit minus LCOE cost
10-Year Loan Cover (DSCR)
∞ (No Loan)
Zero EMI required
Consumer Protection Guard

Delhi Solar Deal & Quote Checker

Paste or enter any installer quote. We compare it against our unpooled Delhi Solar Reference Price ladder, check DCR and GST rules, and tell you if it's fair or overpriced.

Public Open Benchmark

The Delhi Solar Reference Price Index

Delhi's only public, neutral solar price benchmark. Borrowing GridStatus's rigor, every size ladder is kept strictly unpooled to prevent market distortion.

System Size Govt Benchmark (T1) Market Low Market Median Market High Central CFA Delhi State Sub. Net Benchmark Cost Audit Lineage
Open Data Store

Public Data Feeds Catalog

All feeds generated daily by the Layer 3 engine across gross units × load × size × route.

feed_household_conservative.csv

Full evaluation grid with conservative ₹3.50 surplus payout rate (106 KB).

Download CSV
feed_household_policy_example_appc.csv

Full evaluation grid with policy ₹6.50 surplus payout rate (106 KB).

Download CSV
feed_best_size_conservative.csv

Highest-NPV system size per (units, load, route, price rung) (36 KB).

Download CSV
reference_price.json

Unpooled price ladder per system size with provenance tiers (7 KB).

View JSON
provenance.json

Every rule, citation URL, fitted m, and VERIFY/ASSUMPTION audit items (13 KB).

View JSON
For Lenders & DISCOMs

Live REST API Console

POST /api/evaluate

Test our containerized API hosted on AWS ECS Fargate. Modify the JSON payload below and trigger a 25-year simulation.

{
  "status": "ready",
  "message": "Click 'Execute' to run live simulation."
}

Audit & Provenance (WHY)

Every number in SolCall carries a formal confidence tier: T1 (Govt/Regulator/DISCOM), T2 (World Bank/Solargis), or T3 (Market Vendor). Zero LLM guesswork.

Fitted Multiplier (m)
1.369596

Fitted to AMEND2 worked examples: 400u/3kW → ₹2,272 & 100u/3kW → ₹613. Absorbs PPAC, pension cess, tax.

Solar Yield Baseline
1,392.70 kWh/kWp/yr

Global Solar Atlas min 1,466 kWh/kWp/yr across 5 Delhi coordinates minus 5% dust/smog loss.

Regulatory Precedents
  • AMEND2: Delhi Solar Policy 2023 (2nd Amend, 17 Sep 2026)
  • PMSG: PM Surya Ghar CFA Capex Guidelines
  • NETMETER: DERC Net Metering Regulations 2014
  • DERC Tariff: Schedule FY2020-21 progressive slabs
Formally Tracked VERIFY Items
  • tariff.energy_slabs: VERIFY with live customer bills
  • net_metering.surplus_rate: ₹3.50 conservative (VERIFY)
  • under200_incentive: Clause 4.14 interpretation (VERIFY)
  • free_scheme: Marked non-operational (VERIFY)