The Board of Directors of the Netherlands Competition Authority (hereinafter 'the Board') aims to inform the market of and consult the market about possible changes to the general framework of market regulation. The purpose of this document is to inform the market of and consult the market about the Board's views on the level of the regulatory cost of capital of network managers. This cost of capital enables efficient companies to recover the necessary investments in the network. The cost of capital plays a role in determining the method used in setting the x-factor and may have consequences for the level of the x-factor.