Ways to pay
Engagement models
Pay upfront, over time or as a service. The right fit depends on your capital, your time at the site and who carries performance risk.
Regulations
What the rules allow
Since September 2025, consumers may own, lease or rent energy storage, and storage has been on India's Harmonised Master List of Infrastructure since October 2022.
Source: Ministry of Power (PIB), Modernisation of the Power Sector and Reliable Electricity Supply (opens in a new tab) (3 August 2026 (rules notified September 2025)).
Source: Ministry of Power (PIB), Development and Deployment of Energy Storage Capacities to Power Reliable Renewable Future (opens in a new tab) (18 December 2025).
Seven models
How each model works
Consulting engagement
A fixed-fee study or an owner's-engineer retainer. We advise; you decide and buy.
Capex EPC
You own the system from day one. We design, supply, build and commission it.
Supply & install, or integration only
You choose the equipment; we install, integrate and commission it.
Storage-as-a-service
We or a financing partner own the system; you pay a fixed monthly fee for hardware, software and maintenance.
BOO / BOOT
We and a financing partner build, own and operate it for a fee. Under BOOT, ownership passes to you at term end.
O&M-only / AMC
We maintain storage, chargers or solar, whoever installed them, for a fixed annual fee.
† Arranged with financing partners, subject to credit and site assessment.
Compare
Models compared
| Model | Who owns | Who operates | How you pay | Performance risk | Suits |
|---|---|---|---|---|---|
| Consulting engagement | Not applicable | Not applicable | A fee per study or per month | You; we answer for the quality of our advice | Before a capex decision or a tender |
| Capex EPC | You | You, or us under an AMC | Milestone payments | You, beyond the makers' and our warranties | Sites with capital and a long horizon |
| Supply & install, or integration only | You | You, or us under an AMC | Contract price for our scope | Split with the supplier, as set in the interface matrix | Owners with a preferred maker or a network-supplied charger |
| Storage-as-a-service † | CHE Energy or a financing partner | CHE Energy | A fixed monthly fee | Mostly the owner and operator, within the service agreement | Sites that want no upfront cost |
| BOO / BOOT † | CHE Energy or a partner (BOOT: you, at term end) | CHE Energy | A capacity or per-kWh fee | The owner-operator | Larger sites and charging hubs |
| Shared savings † | As agreed | CHE Energy | A share of verified savings | Shared: no savings, no fee on that share | Sites with clean baseline data |
| O&M-only / AMC | You | You, with our maintenance | A fixed annual fee | As set in the AMC | Any existing system |
† Arranged with financing partners, subject to credit and site assessment.
Good to know
Payback, subsidies and tax
- We quote payback only after seeing your data, with every assumption shown.
- Central viability gap funding (VGF) supports utility-scale projects, not commercial or industrial sites.
- Lithium-ion batteries (HSN 8507) carry 18% GST. Ask your chartered accountant about tax treatment.
- Lenders and insurers get a document pack: specification, certificates, fire-test data, commissioning report and O&M plan.
Source: MNRE (PIB), Government Takes Multi-Pronged Steps to Scale Up Energy Storage Capacity in the Country (opens in a new tab) (3 February 2026).
Source: pv magazine India, India Energy Storage Alliance (IESA) welcomes the new tax regime under GST 2.0 (opens in a new tab) (8 September 2025).
Questions about payment models
Start with a conversation
Talk to us about payment options
A phone call is enough to start. Your electricity bills help us suggest a model that fits.