Solar Basics: Why Panels Are Step Two, Not Step One

Published October 29, 2026 by EnergyIQ · Video notes from today's 15-second brief

The best solar system is the smallest one that covers your real needs. Most buyers start at the panel quote and work backward; the savings-literate start with the load and work forward. Shrinking consumption before sizing the array means fewer panels, a smaller inverter, and a payback period measured in years saved, not just panels bought.

Step One Is the Load, Not the Roof

Before any quote, pull twelve months of bills and find your annual kWh. Then attack the easy waste: thermostat schedules, phantom loads, a 120-degree water heater, cold-water laundry. The U.S. Department of Energy's guide for homeowners going solar starts with exactly this efficiency-first logic, because every kilowatt-hour you remove is one your future array never has to produce. Homes that do the boring work first routinely size their system a quarter smaller.

Size to the New Load, Then Compare Dollars per Watt

With the trimmed annual kWh in hand, sizing is arithmetic: a typical U.S. home lands near 8 to 12 kW for full offset, less after load work. Get three quotes and compare one number, installed cost per watt, which the DOE guide and market data put in a broad fair band around two and a half to three and a half dollars before incentives. The thirty percent federal Residential Clean Energy Credit applies to the whole installed cost, batteries included when paired.

Payback Is a Rate Question

Solar pays back fastest where retail electricity is expensive and net metering or buyback terms are decent, so your utility's rate structure is half the decision. If your plan has a steep evening peak, pairing a modest battery to dodge that window can beat a bigger array on pure dollars. Run the sequence in order: shrink the load, price the smaller array, then model the battery. EnergyIQ does that modeling against your real rate windows so the payback number is yours, not a brochure's.