Through site inspections, surveys and historical data, the audit provides information that helps to determine energy flows in buildings or systems. This then helps us to identify specific ways of reducing energy consumption without negatively affecting desired outputs, such as levels of comfort cooling or levels of lighting. Depending on the circumstances, the audits can range in sophistication, from straightforward preliminary walk-thru’s to the more in-depth Investment Grade Energy Audit. But what the various audits have in common is the need to accurately assess the property’s energy consumption and establish a baseline for future comparison.