Sun Wave designs, funds, builds, and operates the solar plant on your roof. You sign a 25-year PPA at ₹4.50-5.50/kWh — a flat 30-45% discount to your grid HT-I tariff with no upfront investment.
For capital-constrained operators, asset-light businesses, REIT-held real estate, and non-tax-paying entities — RESCO converts a multi-Cr capex into a known monthly per-kWh cost.
The 40% Year-1 accelerated depreciation that CAPEX buyers capture has zero value to non-tax-paying operators (schools, hospitals on Section 12A, religious bodies). RESCO transfers that benefit to Sun Wave; in exchange you pay zero capex and zero performance risk.
Zero upfront capital — preserve cash for core business
Immediate 30-45% bill reduction from Day 1, no payback period
Performance, O&M, and warranty risk fully transferred to Sun Wave
Predictable monthly per-kWh cost — easier budget planning
Off-balance-sheet treatment (operating lease accounting)
Buy-out optionality from Year 7 if capital becomes available
We design, finance, install, and own the solar plant on your roof. You pay only for the electricity consumed under the PPA.
Locked-in ₹4.50-5.50/kWh against grid HT-I tariffs of ₹7.50-9.50/kWh — a 30-45% bill reduction from Day 1.
Annual escalation capped at 1.5-2% — far below DISCOM tariff inflation of 5-7% pa over the past five years.
Sun Wave bears all PR risk. We commit to ≥78% Year 1 PR; if shortfall, you get tariff reduction in proportion.
You can purchase the plant at residual value from Year 7 — converting OPEX to CAPEX once capital is available.
We maintain the plant for all 25 years. Quarterly cleaning, monitoring, fault response, warranty management included.
Both are valid structures. The right choice depends on your capital, tax position, and risk appetite.
| Dimension | CAPEX (you own) | RESCO / OPEX (we own) |
|---|---|---|
| Upfront capex | ₹3.5-4.0 Cr per MW | ₹0 |
| Effective per-kWh cost | ₹2.40-2.80 LCOE | ₹4.50-5.50 PPA |
| 25-year savings (1 MW) | ₹38-45 Cr | ₹15-25 Cr |
| Asset on balance sheet | Yes (depreciable) | No (off-balance) |
| AD tax benefit captured | You (₹35-40 lakh Year 1) | Sun Wave |
| Performance + O&M risk | Yours (mitigated by EPC contract) | Ours |
| Best for | Capital-rich, tax-paying | Asset-light, REIT, multi-site, capital-constrained |
We confirm your sanctioned load supports a sized solar plant + that your roof structure (and lease tenure) qualifies for a 25-year PPA.
Tariff fixed for 25 years at ₹4.50-5.50/kWh with 1.5-2% annual escalation. We provide a buy-out option from Year 7.
Sun Wave funds, builds, and owns the plant. ALMM Tier-1 modules + Sungrow/Huawei inverters + IS-2062 structures.
Plant goes live; you receive monthly bills only for solar kWh consumed at the PPA tariff. Zero capex on your books.
Sun Wave maintains the plant; you have the optional right to purchase at residual value any year from 7 onwards.
Under RESCO (Renewable Energy Service Company) or OPEX, Sun Wave designs, funds, builds, and owns a solar plant on your roof. You sign a 25-year Power Purchase Agreement (PPA) and pay only for the kWh consumed at a fixed discounted tariff (₹4.50-5.50/kWh vs grid HT-I of ₹7.50-9.50/kWh). Zero upfront capex, immediate 30-45% bill savings, and we carry all performance, O&M, and warranty risk.
30-45% reduction in the offset portion of your electricity bill from Day 1. For a 1 MW solar plant generating 1,500 MWh/year, that's ₹45-65 lakh of annual savings against the grid HT-I tariff. Lifetime savings over the 25-year PPA term: ₹15-25 Cr per MW (vs ₹38-45 Cr under CAPEX, but with zero capex outlay).
Under RESCO, Sun Wave bears the capex (₹3.5-4.0 Cr per MW), debt servicing, performance risk, and 25-year O&M. Our PPA tariff includes a developer IRR (typically 13-15%) on top of the underlying ₹2.40-2.80/kWh LCOE. The premium is the price of zero capex, predictable monthly billing, and full risk transfer to us.
RESCO is the right answer for: capital-constrained operators, asset-light businesses (hospitality, retail, REITs), multi-site portfolio operators wanting standardised contracts, non-tax-paying entities (educational institutions, religious bodies, NGOs) that cannot capture the 40% accelerated depreciation, and any buyer who prefers known per-kWh pricing over bearing PR risk.
Yes. Every Sun Wave RESCO PPA includes an optional buy-out from Year 7 at pre-agreed residual value (typically 30-50% of original capex depending on year). You convert OPEX to CAPEX once capital availability allows, capturing the remaining 18 years of generation at zero per-kWh cost (only O&M).
Performance risk sits with Sun Wave. We commit to ≥78% PR in Year 1. If PR shortfalls occur, you receive proportionate tariff reduction. Your monthly bill stays predictable; the financial impact of underperformance is on us. This is the structural advantage of RESCO over self-owned CAPEX.
Share your latest electricity bill + roof photo. We'll send back a sized RESCO PPA proposal with 25-year tariff schedule within 5 business days.
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