# How you buy it

> jouleWise can fund the electricity and heat systems it builds: a plant chooses capex, ESCO shared savings, Heat-as-a-Service or Electricity-as-a-Service, under one contract from design to operation.

Canonical: https://joulewise.com/engagement  
Publisher: jouleWise Advisory Services Pvt Ltd, Noida, India · Spain  
Reviewed: 2026-10-08  
Status: company page

## In short

Capex: you own the assets and keep 100% of the savings. ESCO: jouleWise invests and is paid from the measured savings, with little or no upfront cost. Heat-as-a-Service: jouleWise builds, owns and runs heat pumps and storage on green electricity, and you pay per unit of heat at or below your fuel cost, or a fixed monthly fee. Electricity-as-a-Service: solar, wind and storage through long-term electricity agreements, paid per unit below grid tariff. Every engagement starts with a four-week energy assessment, followed by a proposal in weeks four to eight and implementation from about three months. jouleWise designs, finances, implements and operates, and stands behind the savings.
## Questions and answers

**Can jouleWise fund the project?**  
Yes. Under ESCO it invests and is paid from measured savings; under Heat-as-a-Service and Electricity-as-a-Service it owns the assets and you pay per unit.

**What is Heat-as-a-Service?**  
jouleWise builds, owns and runs heat pumps and thermal storage on green electricity; you pay per unit of heat, at or below your current fuel cost, or a fixed monthly fee like a lease.

**How are ESCO savings measured?**  
On ergOS, every 15 minutes, against the baseline agreed in the energy assessment — the same data both sides settle on.

## Related

- [Discuss your plant](https://joulewise.com/contact)

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jouleWise · https://joulewise.com/ · sales@joulewise.com · +91 84483 22771