Best Practice Guide

Glossary

Introduction

Planning an Energy Program

Funding and Approval

Education

Lighting

Central HVAC System

Procurement Policy

Building Envelope

Demand Response

Distributed Generation

Water Use

Motors

Food Service

Resources and Appendices

Lessons Learned

Best Practice Guide Glossary

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OCTANE RATING Return to list of terms

A measure of a gasoline’s resistance to exploding too early in the engine cycle, which causes knocking. The higher the rating, the lower the chance of premature ignition.

Source: California Energy Commission