How Solar Works | The Technology, The Economics, Our Services
How Solar Works
How solar works is a combination of three key components, the technology, the economics, and our services. But first it starts with the sun being the most abundant energy resource on earth. 173,000 tw of solar energy strike the earth continuously, that's more than 10,000 times the worlds total energy use.
The Technology

Solar panels, micro inverters, net metering, and photons from the sun create and harness solar energy to save you money on your monthly utility bill and help reduce your carbon footrprint at the same time.

The Economics

Between the 30% federal tax credit, state incentives, and financing taken care of for you, solar has never been more reasonable or accessible for homeowners and local businesses. Solar also raises your homes value at an average of $15,000.

Our Services

Going solar happens in three easy steps; evaluation, planning, and installation. From the first phone call to the final paperwork National takes care of everything for you. It's as easy as signing the dotted line.

What Is Solar?
#1 PV Array

These are your solar panels, typically mounted to a rooftop. They consist of multiple, interconnected cells from which wires collect the solar-generated electrons and convert them to electric current. Individual solar panels are connected together, forming the “strings” that comprise a photovoltaic (PV) array. We now have the REC Alpha 360 black solar panels, a revolutionary panel achieving incredible levels efficiency, power, and strength.

#2 Solar Inverters

Once generated, the solar DC electricity first needs to be converted to AC (alternating current) and adjusted to 120V before it can be used in US households. This is the role of your solar inverters, which adjust your solar energy into a voltage and current compatible with your house and utility grid. We use locally-produced “micro-inverters”, which are much safer and more efficient than the older, “string” type inverters.

#3 Production Meter

From the inverter, AC electricity travels through additional wiring and conduit to a production meter before it is fed to your home. This meter measures all the power your system produces before it is used in your home or fed back into the grid. Washington State’s Production Incentive is paid based on the data collected by this meter.

#4 Main Service Panel

From your production meter, the AC electricity then travels to the main service panel, which connects your solar energy with your home. The electricity flows first to any loads running in the house, such as appliances, lights, and WiFi routers. When your energy production exceeds consumption, it then travels on to your solar net meter which sends this excess electricity back to the grid.

#5 Solar Net Meter

Your solar net meter records the net input and output of energy with your home. At times when your solar panels produce more energy than you are using, this excess is sent back out to your local power grid, thereby spinning your meter backwards. When your panels don’t meet your energy needs, then your meter will spin forward as you pull in additional energy from the grid. WA’s net metering program allows you to build credits towards energy you’ll use when your panels don’t meet your needs in darker winter months.