Before revision:  The policy of subsidy is thus the primary factor driving lower market values, and this decline happens even for dispatchable low-emission technologies; the variability of wind and solar is only a secondary factor that accelerates the decline if they are subsidised. The strong dependence of market value on the policy regime means that market value needs to be used with caution as a measure of market integration  .
After revision:  The strong dependence of market value on the policy regime means that market value needs to be used with caution as a measure of market integration .