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GB/T 13471-2025Methods for calculating and evaluating the economic benefits of energy saving project (English PDF)

节能项目经济效益计算与评价方法

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Issued by

State Administration for Market Regulation

Level / Type

National · Recommended

Issue date

October 31, 2025

Implementation date

May 1, 2026

Scope

GB/T 13471-2025 is the English-translated version of 节能项目经济效益计算与评价方法.

GB/T 13471-2025 is a methodological standard for working out whether an energy-saving project pays off. It sets out how to calculate and evaluate the economic benefits of such projects.

Its main clause covers energy-saving renovation projects and may also serve as a reference for newly built energy-saving projects. Terms defined include energy saving project, discount rate, benchmark return rate, social discount rate and internal rate of return.

Compared with the 2008 edition, the foreword lists changes to the scope, a revised energy-saving calculation method, added analysis of other benefits and a new project cash flow analysis.

It was drafted under GB/T 1.1-2020. Issued on 31 October 2025 and applicable from 1 May 2026, it replaces GB/T 13471-2008.

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Document preview — GB/T 13471-2025

National Standard of the People's Republic of China

ICS: 27.010
Classification: F 01
Replacing: GB/T 13471-2008

Issued by: State Administration for Market Regulation

Foreword
1 Scope
2 Normative references
3 Terms and Definitions

Foreword

This document is in accordance with GB/T 1.1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents".

This document supersedes GB/T 13471-2008 "Methods for Calculating and Evaluating the Economic Benefits of Energy-Saving Technologies". It is consistent with GB/T 13471-2008.

Compared to previous versions, aside from structural adjustments and editorial changes, the main technical changes are as follows.

a) The scope of application has been changed (see Chapter 1, Chapter 1 of the 2008 edition);

b) The energy saving calculation method has been changed, and other benefit analyses have been added (see Chapter 4, Chapters 4 and 5 of the 2008 edition);

c) A project cash flow analysis has been added (see 5.1);

d) Economic evaluation indicators have been added (see 5.2.4 and 5.2.5);

e) An economic evaluation method for energy-saving projects has been added (see 5.3.2 and 5.3.3);

f) Sensitivity analysis requirements have been added (see 5.3.5).

1 Scope

This document describes the methods for calculating and evaluating the economic benefits of energy-saving projects.

This document is applicable to the calculation and evaluation of the economic benefits of energy-saving renovation projects, and can be used as a reference for newly constructed energy-saving projects.

2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.

For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies to this document.

GB/T 13234 Method for Calculating Energy Savings by Energy-Using Units

GB/T 28750 General Technical Rules for Energy Saving Measurement and Verification

GB/T 32045 Guidelines for the Implementation of Energy Saving Measurement and Verification

GB/T 39965 Calculation Method for Energy Saving Pre-assessment

3 Terms and Definitions

The terms and definitions defined in GB/T 28750 and the following terms and definitions apply to this document.

3.1 Energy saving project

It must include at least one energy-saving measure that helps improve energy efficiency, reduce energy consumption, or improve energy use.

Note: Energy-saving projects also help reduce greenhouse gas emissions.

3.2 Discount rate

The ratio by which the expected returns of a project over a future period are discounted to their present value.

3.3 Benchmark return rate

The minimum acceptable level of return for an investment project, determined by a company, industry, or investor from a dynamic perspective.

Note: The benchmark rate of return, also known as the benchmark discount rate, is used for financial evaluation.

3.4 Social discount rate

The lowest rate of return obtained by using social funds.

Note: The social discount rate is used for national economic evaluation.

3.5 Internal rate of return

The discount rate that makes the net present value equal to zero.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 9 pages — is available in the English PDF.

Referenced standards

Normative references

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