GetSunScore Analysis: Grid Parity
Definition and Solar Context
Grid parity is the point at which the cost of generating electricity from solar energy equals the cost of purchasing equivalent electricity from the utility grid. When grid parity is achieved, solar generation becomes economically competitive on a cost-per-kilowatt-hour basis without reliance on subsidies.
This is an educational comparison concept. GetSunScore's current calculator does not calculate a grid-parity threshold for a household or utility territory.
What Does Grid Parity Mean?
Grid parity is often framed as the point where solar's levelized generation cost equals a relevant electricity price. For rooftop solar, that simplified comparison does not account for all bill charges or the different value of self-used and exported electricity.
Grid parity is not a fixed threshold. Costs, production, retail plans, and export terms change, and a favorable comparison does not guarantee a positive household return.
Why Grid Parity Matters in Modeling
Grid parity can frame a discussion of solar costs, but it is not an input or output of the current GetSunScore calculator. See the methodology for the actual model inputs and limits.
The calculator's long-term savings scenarios use explicit assumptions for production degradation, electricity-rate escalation, self-consumption, and export value. They should not be read as a grid-parity finding.
How Grid Parity Applies in Texas
Texas has varied solar resources, installation costs, and electricity plans. This page does not claim that most Texas markets have reached residential grid parity; that would require current market-specific cost and billing evidence.
In deregulated areas, a retail electric provider's plan can affect both grid-import costs and export credits. Compare current plan terms before drawing a household-level conclusion.
Frequently Asked Questions
Grid parity means the cost of producing electricity from solar equals the cost of buying it from the grid. When a market achieves grid parity, solar becomes economically competitive without subsidies on a per-kilowatt-hour basis.
GetSunScore does not calculate or label grid parity for individual territories. Its current calculator provides screening ranges for solar cost, production, savings, and simple payback.
There is no single statewide answer. Installation cost, production, retail plan, self-consumption, export compensation, and other charges vary. GetSunScore does not publish a verified grid-parity determination for Texas markets.
No. Grid parity is a modeled benchmark, not a savings guarantee. Individual outcomes depend on system size, household consumption, financing terms, local rates, and other variables.
Grid parity is commonly discussed by comparing solar's levelized cost with a relevant electricity price. For a household, that comparison alone does not establish savings because exported power may be credited differently from self-used power.
This is a definition, not a current assessment that a Texas market has reached grid parity. GetSunScore does not guarantee savings.