Before 2017, there had routinely been power outages following storms, but this children’s home in Puerto Rico is now more resilient to extreme weather events. Thanks to the installation of a microgrid system, this facility can run on stored power for short outages, and can run on a diesel generator for extended periods of time, should the situation arise.
All the installation, startup, and commissioning services were provided by an independent electrical contractor, on a volunteer basis. Fortunately, the system successfully went into service without any significant technical problems or delays.
This project was completed remotely with the dedication of an all-volunteer team. The effort was challenging, but served as a rewarding experience for all involved.
Problem
- On a rural mountain top in Puerto Rico, a home and school for neglected children had routinely experienced power outages following storms
- Hurricane Maria left the facility without power for months
- The children’s home needed a power solution that accounted for the site’s frequent and lengthy outages, and offered long-term reliability
Resolution
- Designed a microgrid power system that could be supplied by the normal utility source, or operate independently using an on-site generator, photovoltaic panels, and/or storage batteries
- Installed inverters to convert stored energy from batteries to AC for backup power during utility outages
- Installed one transfer switch to transfer building load between the utility and emergency power sources, and another transfer switch to select between stored battery power or the facility’s generator
Outcome
- Today, the shelter’s power system provides reliable backup power whenever needed
- With this solution, the facility can run for up to 12 hours on stored energy from a renewable source, and can run on a diesel generator for extended outages
- The facility is now more resilient to extreme weather events, including the seasonal hurricanes that affect this region
