This rate option is designed for greenhouse operators who use all or part of the electricity supplied by Hydro‑Québec for photosynthetic lighting. More specifically, it targets customers who are able to adjust their production and to manage their electricity consumption in such a way as to reap the benefits of the Additional Electricity Option while working with the associated constraints.

This option applies to a Rate DP, M or G‑9 contract where some or all of the electricity is used, in whole or in part, for photosynthetic lighting and the maximum power demand has been at least 300 kilowatts (kW) during a consumption period included in the 12 consecutive monthly periods preceding the date of the sign-up request.