Energy
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Model solar payback, energy savings and home upgrade economics with transparent, region-aware assumptions.
Energy guides
Energy
Solar Loan vs Lease vs Cash: The Real Return on Each
The financing decision affects your return more than the equipment decision. Two households can install identical systems on identical...
EnergyShould You Add a Battery to Your Solar System?
Battery storage is the most heavily promoted solar upgrade and, under the most common conditions, the one that most reduces your return....
EnergySolar Payback Period by State: What Actually Drives the Difference
The intuitive assumption is that solar pays back fastest where the sun is strongest. Arizona should beat Massachusetts comfortably. In...
EnergyHow to Read a Solar Quote: Seven Numbers That Decide Your Payback
Solar proposals are long, glossy and structured to make direct comparison difficult. Two quotes for the same roof will present entirely...