Microgrid Project

Boulder Housing Partners

23,614 lbs

Est. Annual CO2 Offset


Project Type

Boulder, CO


20 kW

System Size

During spring 2018 IPS installed the very first of Boulder, Colorado’s microgrid resiliency projects for Boulder Housing Partners (BHP). (Resiliency, in this case, means continuing to be powered in perpetuity regardless of the availability of the grid and even natural gas.)

This system provides backup power to critical loads at BHP’s headquarters building in the event of a power outage. Included in the backup plan is the provision of a safe power command post for emergency services such as police and fire.

The power system consists of a 45-kilowatt hour battery bank, an 18-kilowatt, three-phase power inverter, a 6-kilowatt natural gas DC generator integrated with a 20-kilowatt solar array mounted on the roof.

Tony Boniface, system designer and CEO of IPS explains: “The system is very robust and sensible. During normal times when grid power is available, the solar array produces clean power in parallel with the grid feeding power to the building, thereby displacing grid-supplied power and reducing BHP’s electric bill. During a grid outage, the system instantly takes over powering circuits that were carefully selected and wired to a critical load panel. One such important load is the entire IT system. Other critical loads include a wing of the building that has a full kitchen and power outlets for laptop computers. We also provided two EV chargers connected to the critical load panel in order to ensure ‘fuel’ for transportation even if gas stations become inoperable, which is what can happen in the event of long-term grid outages, such as in the aftermath of last year’s severe hurricanes. Many parts of Puerto Rico are still without power seven months after Hurricane Maria.” 


"We had our first power outage on June 4th and it worked! The solar battery back-up system was up and running providing power during today's outage; it was a seamless switch over."

Tim Beal, Director of Sustainable Communities
Boulder Housing Partners

Building the Future

One System at a Time

Day in and day out we deliver the products and services we would want in our own homes to our clients and customers to help solve their energy challenges. We do this by choosing only the best, safest, and most long-lasting products available to design a system that will continue to perform year after year.