Entries by Efrem Tagliamonte

The Cost of Quality – A Solar IE’s perspective

There is a well-known business adage called the “Cost of Quality”. This is a sliding scale that says, the closer to completion a project gets, the more expensive it is to fix quality issues.   Quality comes in the form of Time (schedule) and/or Cost ($$$).  Project Management textbooks call these the “triple constrains” as […]

Spring Time for Preventive Maintenance

Spring cleaning also applies to solar! After harsh exposure to winter’s snow, ice, and rain, systems benefit from routine inspection and maintenance. This ensures performance will be optimal as the season progresses. Why is this important for owners and financiers? The solar peak generation season is April through September. Unplanned outages in this season costs […]

ASTM E2848 Capacity Test for Beginners

Capacity and performance ratio tests are used to demonstrate the performance of PV plants to buyers or lenders and de-risk their acquisition.   One popular test is ASTM 2848-13 “Standard Test Method for Reporting Photovoltaic Non-Concentrator System Performance”. The goal of this test is to compare the ratio of a modeled system vs the actual system performance, and the system should perform the […]