Bringing solar power solutions to individuals in the North Quabbin region


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Grid-tied PV systems

Grid-tied PV  systems are the most common and simplest installations.

  • They are photovoltaic (PV) systems that generate electricity with solar panels.
  • Grid-tied systems are interconnected with the power grid through a grid interactive inverter.
  • Electricity can flow TO or FROM the power grid depending on your needs and production.
  • Systems can be mounted on the roof of a building, on poles or racks on the ground.

Net metering concept

Their size and capacity is calculated such that over the course of a year you produce as much power as you yourself use. During the summer you will have overproduction and build a $credit with your power company. During the winter months you will be using this credit to supplement your power usage by buying power from the Power company. This is know as Net metering.

Depend on power grid

These systems are virtually maintenance free. They depend on the power grid to function. In a power outage these systems cannot produce power and you will have no power. AC or DC coupling with battery backup can be added to existing or new systems to provide power to the whole house or critical appliances during a power outage. The additional cost for such add-ons would be $5,000-$10,000 depending on the capacity of the back-up and the desired days of autonomy.


A typical household will need a 5000–8000 Watt PV array to offset their power needs. Installation cost are $3.25 to $4.25 per Watt.


Stefan Maier, Design and Engineering

Domestic DC Systems

Orange, Massachusetts, USA