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Solar + Tesla Powerwall Case Study

Tesla Powerwall case study featuring solar energy, grid independence and resiliency:

Jan and Ken Culwell of Cadiz, Kentucky, now supply the majority of their home’s electricity from 34 solar panels and two Tesla Powerwalls.

Tesla Powerwalls powered by solar

LightWave Solar installed the Powerwall system in early June, and the couple has seen their electric bills plummet. A bill comparison of July 2019 versus July 2018 shows a 73% drop in grid consumption.

Tesla Powerwall provides backup power

The system reduces their 3,000 square foot home’s grid reliance on a daily and nightly basis, and it also provides backup power. During a grid outage, the system provides electricity to one 200-amp service panel, allowing the Culwells to power their kitchen, master bedroom and bathroom, washer/dryer, EV charger, and internet, among other items.

Last month, they experienced a brief grid outage, unbeknownst to them.

“The lights didn’t even flutter,” says Ken Culwell. “Our neighbor told us, so we checked our Tesla app and saw the grid failure and how our battery system took over automatically,” he says.

Tesla App

Tesla Powerwall App

The Culwells went with Tesla Powerwalls since they provide industry-leading backup capabilities and can be easily monitored with the Tesla app which tracks home energy use, solar generation, battery status, backup history and grid consumption.

“We look at the Tesla app embarrassingly often,” jokes Jan Culwell. “We love it, and since I can see our electricity use in real time, I’ve started to change the way I use power to reduce our demand and save more,” she says.

The Tesla app shows real-time and historical energy usage, identifying the sources of a home’s electricity – solar, Powerwall or grid (see screenshot below on left). Tesla app also shows Powerwall status, charging or discharging, and level of charge (see screenshot below on right).

Tesla Powerwall Case Study with Tesla App

Making the decision to install solar + battery storage

Jan and Ken Culwell each thought solar was a good idea but assumed the other might not want to spend the money. When they finally discussed it, they realized they both wanted to power their home with clean, renewable solar power instead of using grid power.

Last August, the Culwells chose LightWave Solar to build a 10-kilowatt solar system on top of a ground canopy. Initially, the Culwells were selling their solar power to the local power company through TVA’s program, but several months later, the Culwells decided they wanted to use solar power in their home by adding battery storage which also replaced their generator.

LightWave Solar Tesla Powerwall Case Study

If you are interested in speaking with one of our project consultants about this Tesla Powerwall case study or how a similar system could work for you, please let us know! Complete our contact form, and we will call you to discuss your options for adding solar energy, grid independence and resiliency to your home.

We had a great experience with Lightwave. They installed an add on system of 5kW along with a Tesla Powerwall battery. From the initial presentation to the final project completion, they all worked together and everyone on their team seemed truly happy to be engaged in this new industry. They are true professionals and I was glad we selected them. In addition to having a high tech back up system for my home, I am now off grid about 30% of the time. Amazing.
Quentin Humberd
Quentin Humberd
11:06 06 Dec 19
Wonderful experience from beginning discussions to project completion. On time, on budget and a pleasure to work with these folks
David Goodridge
David Goodridge
19:50 31 Oct 19
LightWave provided excellent service from design through applications through installation. We are very happy with the performance of the system.
Michael Dennis
Michael Dennis
01:20 04 Aug 19
LightWave Solar, LLC installed a 10 kW Array for us and did an excellent job! They completed the Array installation on time and with in budget.
Brian Nothnagle
Brian Nothnagle
18:49 23 Jul 19
The staff was incredibly friendly and knowledgable. in addition to keeping the area clean , we are very happy with the work and the price.
Denis Savouray
Denis Savouray
13:11 30 Nov 18
Light Wave Solar is terrific. All their people were great to work with, knowledgeable and on- the- ball. They were everything i could have asked for and i couldn't be happier with the system they installed. So far it is working just as i hoped!
Jeanie Stephenson
Jeanie Stephenson
23:00 26 Nov 18
I needed LightWave's help after a wind storm caused a tree to fall on my house. The tree destroyed ten solar panels on my roof. LightWave's technicians visited me to assess the damage and plan repairs. LightWave's project manager took over from that point. After the design was complete and approved, the installation crew completed the job in a single day. Every LightWave representative was pleasant and professional. I would recommend them to anyone who needs their services.
Mike Wiedemer
Mike Wiedemer
18:41 25 Oct 18
The whole team at LightWave Solar did an all-around excellent job! They showed up on time as expected and communicated everything very clearly on what I can expect to see and happen. They were all very professional and courteous throughout the entire process. I am already seeing MUCH lower electric bills. Thanks again to everyone at LightWave Solar, I greatly appreciated your services.
Nick Mielnik
Nick Mielnik
18:41 22 Oct 18
The entire team at LightWave Solar went above and beyond to ensure that our solar install was done on time, on budget, and to our satisfaction. Professional in every way. I can't get over how seamlessly they have integrated everything to our 1960 built home. Very well done. An added bonus is their handling of the necessary licenses, myriad forms and paperwork and approvals from local power company and TVA. These guys deserve 10 stars!
Shawn Kries
Shawn Kries
18:12 16 May 18
Great service and solar products. Professional installation and technical support. Installation quality outstanding.
Dan Larsen
Dan Larsen
13:56 22 Feb 18
Very happy with our 50KW solar panel array commercial system. Lightwave was extremely easy to work with.
Mark Fournier
Mark Fournier
13:19 08 Feb 18
We installed a 10 KW solar panel array on the roof of our home this past fall. The process required coordination between us (the customer), the local electric company (Nashville Electric Service) and the Tennessee Valley Authority (TVA). While this may seem daunting, it turns out that apart from signing a few routine documents, the process requires little to no effort on the part of the customer: Lightwave Solar takes care of all the details. Their attention to those details was impressive, which meant the whole operation was smooth, professional and basically worry free. The physical installation itself is a marvel of craftsmanship and technology. Lightwave Solar fully earns their five star rating and I recommend them without reservation.
David James
David James
06:07 22 Jan 18
Expert system design and expert install. Couldn’t be happier. Installed grid-tied roof-mounted 30kw system on rural lodge. Very happy with results on electric bill.
Greg Gough
Greg Gough
02:27 20 Jan 18
My first month's savings was over $100. This is in spite of shorter fall days, cloudy days, and rain. The shortest day of the year is in late December. Its best performance will be in the spring and summer. I am very pleased with it.
Gerald Dooley
Gerald Dooley
18:26 27 Oct 17

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