Solar Battery Round-Trip Economics Comparator — Compare Storage Efficiency
Compare two storage-efficiency scenarios to see how much energy is lost during charging and discharging and what that loss means financially.
Common throughput assumptions
Efficiency scenarios
How round-trip efficiency affects economics
Not all energy entering a battery is returned to the load. Round-trip losses represent the energy that disappears inside the storage pathway as the battery charges and discharges.
Energy loss = battery input − delivered energy
Why the cost of losses grows with throughput
A small efficiency difference can become important when the battery cycles many megawatt-hours each year. The economic impact therefore depends on how frequently storage is actually used.
What to compare beyond efficiency
A slightly less efficient battery can still be attractive if it has lower cost, better usable capacity, greater power capability or a longer expected operating life. Efficiency should therefore be treated as one decision variable rather than the whole decision.