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  • Net Metered Solar Electric Technology

    A ‘net metered’ solar energy system will generate electricity from the sun and inject that energy into your home, displacing…
  • Off Grid or Net Meter?

    Building a new home is an exciting and challenging project. Planning for your energy can be a big part of…
  • Net Meter System Sizing

    When sizing a net metered solar energy system we work within 3 constraints: Energy targetSpace constraintsBudget constraints Your energy target…
  • Solar Charge Controller Types – Shunt, PWM, MPPT

    A solar charge controller is a device that manages the charging of a battery from a solar module or array…
  • Rodent Screening

    Ah, squirrels. Red ones, grey ones, black ones… funny thing is the black ones are actually grey squirrels. And in…
  • PV Modules Have Moved

    A PV array should solidly attached to its racking and the roof. Modules should be straight and square. Gaps between…
  • Array Oversize

    Array oversize applies to any solar electric system, but is most commonly a topic in design of grid tie batteryless…
  • Equalization

    Equalization is a process of controlled battery over-charging. It is used as a routine maintenance activity and a remedial activity…
  • Types of inverters

    Common inverter topologiesSystem design varies by topology, so they are not necessarily apples-to-apples comparable. Battery based invertersAll battery based inverters…
  • Ground Faults

    A ground fault is a wiring fault -- a live wire is making contact with the ground. Ground faults are…