Home / Solar Readiness & Load Calculations
Smyrna & Cobb County
The short answer
A whole-house load calculation is a code-based measurement of your home's total electrical demand against your panel's capacity. It's the step that tells you — before you sign anything — whether your Smyrna home can support solar, an EV charger, a heat pump, or all three.
Measure first
Solar panels, EV chargers, and heat pumps have one thing in common: they all connect to the electrical panel your home already has. And in Smyrna, that panel often predates all three technologies by several decades.
A load calculation works through everything drawing power in your home — HVAC, kitchen circuits, laundry, water heating, lighting — plus whatever you're planning to add, using the method the electrical code actually requires. The output is a number, not an opinion: how much capacity your service has, how much you're using, and how much is left.
For solar specifically, there's a second constraint most homeowners don't hear about until it's a change order: your panel's busbar rating limits how much solar can be interconnected. Older 100-amp panels frequently can't accept a meaningfully sized system without a panel upgrade first. Finding that out from us costs a service call; finding it out mid-solar-contract costs a lot more.
When you need one
Confirm your panel can accept the interconnection — and avoid the surprise panel-upgrade change order after you've committed.
A Level 2 circuit is a 40–60A draw by itself. Know whether your panel carries it, or whether load management is the smarter path.
Heat pumps, induction ranges, and electric water heaters shift real load onto the panel. Measure before the old unit fails, not after.