Domestic DC Systems

01/13/2021

Here is my once a year visit to my page. Well. what's new? Just completed my Generac PWRcell recertification. We also launched a new and improved website about 4 weeks ago. Same address www.domesticDCsystems.com It looks like we will be installing Sonnen battery backup systems soon. A excellent solution for people who have Solar but want also backup.

We specialize in the design and installation of solar photovoltaic systems (PV systems) that meet your energy and budget requirements. Typical designs include: solar and battery storage, grid-tied with and without battery storage, AC and DC coupling to add back-up power to existing PV systems, and o...

09/29/2018

The solar panels at Stefan Maier's exhibit are providing the power for the turning lathes Richard Williams is using for his beautiful turned bowls. Plenty of sun today -- plenty of power! North Quabbin Garlic and Arts Festival.

09/29/2018

Come visit Stefan Maier at our solar energy exhibit at North Quabbin Garlic and Arts Festival today or tomorrow. We are ready to help you be grid independent. We're down in the "Portal to the Future." Indeed! Gates open 10 am to 5 pm both Saturday and Sunday.

09/27/2018

We will be at the North Quabbin Garlic and Arts Festival this coming weekend, September 29 and 30. Come visit us at our trailer in the "Portal to the Future." Learn how to combine solar panel energy with battery-based storage systems, combining the best of both worlds.

https://garlicandarts.org/booths/renewable-energy/

09/22/2017

Domestic DC Systems provides solar energy solutions for individuals in the North Quabbin area. Come visit us at the 2017 North Quabbin Garlic and Arts Festival in Orange, MA this weekend (September 23-24). We'll be generating the power for wood turning lathes for the booths of two woodworkers, plus power to charge electric bicycles. Our truck, with its mobile solar panels, will be located in the Renewable Energy area behind the Main Stage.

Learn about the advantages of owning your OWN solar power system (versus leasing) at our website: http://www.domesticdcsystems.com/

02/15/2017

In 10 years energy usage, production and distribution will look significantly different from what it is today. Read more in our first newsletter!

For the past four years I have been attending the Installer Conference that is organized by altE in Boxboro, MA. altE is an alternative energy parts distributor that serves small installers and individuals like myself in the New England area and beyond. The conference brings together manufacturers,…

02/12/2017

This is a 9.4 kWDC battery based grid-tied system using 2 Schneider XW5548 inverters and 3 MPPT 60/150 charge controllers. The system can operate in multiple modes but is typically in grid-tied mode with the batteries being in standby. If the power grid is lost the system switches automatically to backup mode and powers most circuits of the dwelling and the barn. The racking for this system was designed by Domestic DC Systems and fabricated locally. Each of the 3 arrays is fully counter balanced at any position and can be moved from completely vertical for snow removal to fully horizontal for module installation. The owner can manually hook up a 8kW generator and use it for recharging the battery bank and powering the buildings in a power outage with a prolonged cloudy period. The Schneider combox allows the owner to monitor the systems performance in real time from his computer. Historical data, graphs and system settings can also be obtained and managed via the combo. Two revenue grade meters are used to track the production of the system. The system qualifies for all available incentives, including 10 years worth of SRECs.

02/02/2017

Battery based grid-tied system with 17.25kWDC array. This system behaves like a grid-tied only system when the power grid functions normally. The system will go into backup mode within milliseconds after a grid outage. It disconnects itself from the power grid and continues to supply power to emergency subpanels (critical load panels) in 2 buildings. The system is designed to power the property 24/7 during a power outage with batteries being recharged by the PV array. However a backup generator will power loads and charge the batteries during a prolonged 'no-sun' period if needed. All switching is handled completely automatically by the various Schneider XAN-bus components.