Determine when solar LCOE reaches grid parity with utility electricity rates based on cost trends.
Input Parameters
Results
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Grid Parity Year
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Rate at Parity
$/kWh
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Current Gap
$/kWh
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10-Year Gap
$/kWh
Note: Solar has already achieved grid parity in most US states. The crossover point depends on local utility rates and available solar resource. Higher utility rates accelerate parity.
Reference
Solar LCOE(t) = Current LCOE x (1 - decline)^t
Utility Rate(t) = Current Rate x (1 + increase)^t
Grid Parity at year t where Solar(t) <= Utility(t)
Gap = Utility Rate - Solar LCOE