BackupFree backup power assessment
SolarEdge Nexis home batteries, designed and installed by LightSkye for homeowners in 9 states. See what your home needs in about 2 minutes, with no credit check.
Tony to confirm: homes installed count
02 The batteries
Nexis is the battery we lead with. We also install Tesla Powerwall 3 when it suits your home better. Your designer recommends one and tells you why.
The battery we lead with
SolarEdge
5kWhper block
Stackable 5 kWh blocks that click together on the wall, with cell-level thermal protection. Our standard sizes further down are one to four of them.
Also installed
Tesla
13.5kWhper unit
One unit with the solar inverter built in. Add units for more storage.
Specs from SolarEdge's Nexis announcements and Tesla's Powerwall 3 datasheet (North America, 2024). kWh is how much energy is stored; kW is how much can run at once.
03 How it works
Tap the switch. This is what a battery does for a house on an ordinary day and on the night the power goes out.
Grid on
Your solar charges the battery. At night and when grid rates are high, the house draws on stored power instead.
1
Nexis comes in 5 kWh blocks, from 5 to 80 kWh. Powerwall 3 stores 13.5 kWh per unit, up to four units.
Sized to your home in your free design.
2
Depends on what is running. A/C drains it faster than lights and a fridge.
Tony to confirm: backup hours per size
3
Powerwall 3 is rated for indoor and outdoor install.
Tony to confirm: Nexis indoor and outdoor rating
4
Your price comes with your free design. Nothing on this page is a quote.
04 Battery sizes
Storage is measured in kWh. More kWh means more of the house runs for longer. Not sure? Pick any card and we size it with you.
These sizes are built from 5 kWh SolarEdge Nexis blocks, one to four of them. Prefer Tesla? We also install Powerwall 3, in 13.5 kWh units.
One Nexis block
Store your solar and use it when grid rates are high.
No backup power during an outage.
One Nexis block
Savings plus backup for the circuits you pick, on a sub panel.
Two Nexis blocks
More capacity for a broader range of home loads.
10 kWh goes quickly with big loads running, so you manage usage during an outage.
Three Nexis blocks
More confidence and longer backup for your whole home.
Four Nexis blocks
The most capacity, for extended backup and larger homes.
Swipe for more sizes
05 What is included
No numbers here on purpose. Every home is different, so your price comes with your free design, before you decide anything.
Ask about payment options on your call. Tony to confirm: zero down options for batteries
A system sized to your home and to the circuits you want kept on.
We file the paperwork and deal with your utility.
LightSkye crews, the same team that designs it, do the work.
See what the battery is doing from your phone.
06 Why LightSkye
The people who design your system are the people who install it, and they are still there for the monitoring afterward.
LightSkye is owned by the people who work here.
Certified by the national board for clean energy installers.
Of solar experience across the team.
BBB accredited, A+
4.8 on Google
Tesla certified installer
Nerd Elite installer
Focus Outlook Top 10, 2026If backup isn't a good fit for your home, we'll tell you.
07 Three steps
2 min
Home type, what you want to back up, your utility, and whether you have solar.
Free
Real load numbers, the battery size and your price. We handle permits and utility approval.
Our crews
A professional install by our own crews, then keep an eye on the battery in the app.
08 Reviews
From LightSkye customers on Google. These are solar installs by the same crews who install batteries.
Tony to confirm: 3 to 5 Google reviews, battery or outage stories first
"It was the most efficient installation I have ever seen. And I have been a contractor for more than 20 years, the crew was absolutely amazing. ... They completed the 2 day installation in less than a day."
"Although solar was not a good fit for my home due to shading Kyle was very honest about it and made solar easy to understand!"
"Thank you for being so polite and efficient. This team was here and gone in half a day! There was no mess left and no excessive noise."
"He made the process enjoyable, educational, and most importantly took the time to help figure out if solar was a good fit for my family instead of trying to push it on us."
09 Questions
We lead with SolarEdge Nexis and also install Tesla Powerwall 3. Your designer recommends one for your home, your electrical panel and what you want kept on, and tells you why.
The battery takes over and keeps running the circuits it covers: the ones you pick on the essentials size, or the whole home on the larger sizes. The savings only size does not provide backup.
Tony to confirm: switchover wording and time for each battery
It depends on what is running. Lights, a fridge and Wi-Fi draw far less than central air or an electric range, so A/C drains it faster. A bigger battery, and recharging from solar, both stretch it. Your design shows your home's loads against each size.
Tony to confirm: backup hours per size
A standby generator runs on fuel and needs regular maintenance, and runs as long as it has fuel. A battery needs no fuel and makes no noise, and on an ordinary day it can store power for when rates are high, but it holds a set amount of energy. We will tell you honestly which fits your home.
Tony to confirm: whether we offer generators
If you already have solar, say so in the survey and we design the battery around the system you have. If you do not, we can look at solar and a battery together.
Tony to confirm: battery without solar, and adding one to existing solar
It depends on the size, your electrical panel and what you want backed up, so we price it from your free design instead of guessing here. You see the number before you decide anything.
Tony to confirm: zero down options for batteries
We do not promise any credit or incentive on this page. The rules depend on how the system is owned and they change, so check with a tax professional before counting on one.
Tony to confirm: tax credit and incentive wording
SolarEdge Nexis and Tesla Powerwall 3 each carry a 10-year manufacturer warranty. Ask on your call about our own workmanship warranty.
Tony to confirm: workmanship warranty terms
We install in Michigan, Pennsylvania, Ohio, North Carolina, Virginia, West Virginia, Tennessee, Kentucky and Indiana. The survey checks your ZIP code.
Yes, we handle permits and utility approval. Your designer gives you the timeline for your home.
Tony to confirm: typical install duration
Two minutes of questions, a free design, and a straight answer about whether backup fits your home.