(ii) Submetering. Where the conversion is to submetering of electricity, with the tenant purchasing electricity from the owner or a contractor retained by the owner, who purchases electricity from a utility at the bulk rate, such schedule of rent reductions is based on the median monthly cost of electricity to tenants derived from data from the United States Census Bureau's 2002 New York City Housing and Vacancy Survey, as tabulated by the New York City Rent Guidelines Board, 51 Chambers Street, Suite 202, New York, NY, and available on its website at www.housingnyc.com, adjusted to reflect the bulk rate for electricity plus a reasonable service fee for the cost of meter reading and billing, based on the maximum estimated fee included in the Residential Electric Submetering Manual revised October 2001, published by the New York State Energy Research and Development Authority, 17 Columbia Circle, Albany, NY, and available on its website at www.nyserda.org, and reflected in Operational Bulletin 2003-1. The owner or contractor retained by the owner is not permitted to charge the tenant more than the bulk rate for electricity plus a reasonable service charge for the cost of meter reading and billing. The charge for electricity as well as any related service surcharge is not part of the legal regulated rent and is not subject to this Code. The resolution of any dispute arising from the billing or collection of such charge or surcharge is not within the jurisdiction of the DHCR. A conversion to submetering does not require rewiring the building provided the owner submits an affidavit sworn to by a licensed electrician that the existing wiring is safe and of sufficient capacity for the building.