Electric Charging, Solar, Annapolis MD
Written by Lisa Walsh

Solar Systems with Integrated Electric Vehicle Chargers

….like Peas and Carrots

Solar Panel, Solar energy, Annapolis MDAs referenced in our accompanying EV Growth Blogs, the adoption of Electric Vehicles has skyrocketed in recent years. This is small wonder considering EV purchasers can look forward to a 30% federal tax credit on the upfront cost, reduction of fuel costs of at least 60% (according to this Nissan Leaf owner’s calculations), and State Grants/tax credits where applicable (Maryland, for example) and the negation of various oil changes and maintenance costs that accompany an internal combustion engine. For homeowners who have discovered the substantial energy savings by purchasing (not leasing!) a solar residential system, it’s a natural step to want to extend these savings to their current, or future, electrified vehicle.

Ahead of the curve on this natural progression is an innovative new product from inverter manufacturer SolarEdge. All solar systems have two major components 1. Solar panel arrays 2. Inverter(s) that convert incoming DC energy to appliance-ready AC energy. As the national leader in residential inverter supply, SolarEdge made a great move in developing an Inverter that has a built-in EV Charger with a 25’ charge connector. Net energy meter customers (NEM) or energy generating customers interconnected to Pepco are not eligible to apply for the R-PIV rate.

Electric Charging,Solar, Annapolis MD

Why not choose a separate EV Charger?

Four reasons:

  1. Cost. Upgrading to an inverter that has a built-in EV Car Charger comes at around a $1000 cost increase (assuming one inverter/car charger). However, this upgrade – as part of the solar installation – qualifies for the 30% federal tax credit, putting the material cost at around the same as a separate stand-alone EV Charger such as Clipper City. In addition, the integrated inverter has no additional labor or electrician charges – its all covered in the solar install.
  2. Warranty. Popular stand-alone Car Chargers such as Clipper City come with a 3- year warranty. Solar Edge’s integrated inverter has a 12-year warranty, with upgrades up to 25 years available.
  3. Design Elegance. Between service panels, routers, generators and other wall-mounted electronics – its nice to have a 2-in-1 solution and save some wall space. No additional wiring or conduits needed. Of course, the inverter does need to be placed within 25’ of where the EV will be parked nightly.
  4. All Pros no Cons. As with Stand-alone chargers, Solar Edge’s integrated solution allows for indoor/outdoor placement, comes with a 25’ connector and offers software that tracks your EV’s energy consumption that is accessible from desktop or phone, and can be controlled remotely.

Thinking Ahead

Due to the clear advantages, and seeming inevitability of rapid EV adoption by the majority of Americans by the Year 2030, we now ask all of our prospective solar shoppers two questions:

  1. “Do you plan to buy an Electric Vehicle in the not-so-distant future?”
  2. If so, “ What is your expected weekly/annual mileage?”

Mileage calculations inform how many solar panels we should add to the array in order to cover as much EV car use as possible (as roof space allows). Worth noting for our Washington DC/Montgomery County solar customers, PEPCO does require us to fill out an Electrical Usage Calculation Sheet if the solar system is sized over 120% larger than the past 12 months usage history. In those cases we simply submit the estimated kWh increase (as per expected mileage calculations) that the EV will add.

Written by Lisa Walsh

PEPCO Incentives for Electric Vehicle Owners in Maryland and DC

PEPCO has an Electric Vehicle (EV) Program for residential customers in Maryland. It is open to all qualified residents throughout the state. You can participate in the program if your electric vehicle is registered in Maryland.

This program was created to encourage off-peak vehicle charging. The benefits include lower off-peak electric rates for charging during the 16 hours of off-peak hours available Monday through Friday and all day Saturday and Sunday. This policy lightens the load and strain on the electric grid which improves the reliability for everyone. It also encourage the shift to clean energy which will reduce car emissions. And if you choose to charge your car with solar panels, you will achieve an even greater impact.

Another way you can make a difference is by shifting your energy usage to night time. Run your big appliances at night. Wash and dry your clothes at night. Run your dishwasher at night. Again, this will lower the burden on our power plants and it will also lower your electric bill too.

In DC, PEPCO is proposing special incentives to owner’s of electric vehicles. The program will offer lower electric rates to owners of EVs that charge their cars during off-peak hours. Some customers will also qualify for discounts on Level 2 smart charging stations that includes 100% of the cost of installation. For commercial property owners, PEPCO will install charging stations at a discount and they will also install them for free. PEPCO is also planning to install 20 fast charging stations along the main roads and in each Ward and in each quadrant of the city. Finally, PEPCO will be creating a $1,000,000 fund that is designed to provide grants for people and organizations with ideas that can help encourage a greater shift towards electric cars.

Let’s also help PEPCO increase electrification by considering a shift towards renewable sources from solar panels. Please contact us via this website or call us at (410) 923-6090. We have hundreds of installations throughout the Baltimore/Washington/Annapolis area. We look forward to helping you too.