A solar system paired with well-planned battery storage is a powerful combination for homeowners looking to reduce their energy costs. However, a solar installation without sufficient battery capacity can fall short of delivering its full potential savings.

We've likely encountered instances where competitors have installed solar systems with undersized batteries. While this might present a lower initial cost, it ultimately limits the homeowner's ability to utilize their stored energy during peak evening hours when utility rates are highest. Consequently, the anticipated savings are not fully realized, leading to customer dissatisfaction and potentially impacting our industry's reputation.

At LightSkye Energy, our focus is on providing effective and comprehensive solar solutions. A crucial element of this is accurately sizing battery storage to meet our customers' needs and maximize their return on investment.

💡To facilitate these calculations and discussions, remember this formula:

• (Total Annual Consumption / Days in a year) = Daily Consumption

• (Daily Consumption / 2) = Daily and Nightly Consumption

• (Nightly Consumption / The storage size of the battery) = Battery quantity needed

💡Example with a customer who uses 11,000 kWh/yr:

• 11,000/365 = 30.13kWh/day

• 30.13/2 = 15.07kWh (15 during the day/15 during the night)

• 15.07 night time usage/15kWh (or 1 Franklin) = 1 Franklin WH battery

*The graphic below is a great tool to use with customers.  It breaks it down and really describes for them how to understand what they are buying and why they need the amount you are proposing.  This isn't for all customers but for those who need it, it's a killer tool!  If you still can't get the customer to buy in, have them scan the QR code below in the right corner.  That takes them directly to the Enphase site, which is the source of this calculation.