10 CFR § 436.23 - Estimated simple payback time.

---
identifier: "/us/cfr/t10/s436.23"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "10 CFR § 436.23 - Estimated simple payback time."
title_number: 10
title_name: "Energy"
section_number: "436.23"
section_name: "Estimated simple payback time."
chapter_name: "DEPARTMENT OF ENERGY"
subchapter_number: "D"
subchapter_name: "ENERGY CONSERVATION"
part_number: "436"
part_name: "FEDERAL ENERGY MANAGEMENT AND PLANNING PROGRAMS"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "42 U.S.C. 7101  42 U.S.C. 8254; 42 U.S.C. 8258; 42 U.S.C. 8259b; 42 U.S.C. 8287,"
regulatory_source: "44 FR 60669, Oct. 19, 1979, unless otherwise noted."
cfr_part: "436"
---


# 436.23 Estimated simple payback time.

The estimated simple payback time is the number of years required for the cumulative value of energy or water cost savings less future non-fuel or non-water costs to equal the investment costs of the building energy or water system, without consideration of discount rates.

[61 FR 32651, June 25, 1996]