Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| 20 years | 2400 kWh/kW p y | 2200 kWh/kW p y | 2000 kWh/kW p y | 1800 kWh/kW p y | 1600 kWh/kW p y | 1400 kWh/kW p y | 1200 kWh/kW p y | 1000 kWh/kW p y | 800 kWh/kW p y |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| $200 /kW p | 0.8 | 0.9 | 1.0 | 1.1 | 1.3 | 1.4 | 1.7 | 2.0 | 2.5 |
| $600 /kW p | 2.5 | 2.7 | 3.0 | 3.3 | 3.8 | 4.3 | 5.0 | 6.0 | 7.5 |
| $1000 /kW p | 4.2 | 4.5 | 5.0 | 5.6 | 6.3 | 7.1 | 8.3 | 10.0 | 12.5 |
| $1400 /kW p | 5.8 | 6.4 | 7.0 | 7.8 | 8.8 | 10.0 | 11.7 | 14.0 | 17.5 |
| $1800 /kW p | 7.5 | 8.2 | 9.0 | 10.0 | 11.3 | 12.9 | 15.0 | 18.0 | 22.5 |
| $2200 /kW p | 9.2 | 10.0 | 11.0 | 12.2 | 13.8 | 15.7 | 18.3 | 22.0 | 27.5 |
| $2600 /kW p | 10.8 | 11.8 | 13.0 | 14.4 | 16.3 | 18.6 | 21.7 | 26.0 | 32.5 |
Question:
Name the 1800 kwh/kw p y when 2400 kwh/kw p y is 5.8
Answer:
7.8