When it comes to pinpointing specific months rather than seasons, every part of the country has its own highest- and lowest-demand months. For example, hotter states, such as Texas, have their lowest demand anytime between December and March.[2] When it comes to your own location, you can determine typical demand trends by taking a look at your area’s weather patterns or your billing records that showcase your personal monthly demand levels.
Utilities, or energy companies, in Maryland offer customers information to know how much they are spending on electric supply each month. Baltimore Gas & Electric Co., for example, provides a tool known as the Standard Offer Service, which shows customers how much they can expect to pay for energy supply each month. Current supply rates show that BGE customers will pay 8.225 cents per kilowatt hour (kWh). ChooseEnergy.com, as of mid-May, offers a 36-month plan that could save 13 percent on that rate now.
The simplest model for day ahead forecasting is to ask each generation source to bid on blocks of generation and choose the cheapest bids. If not enough bids are submitted, the price is increased. If too many bids are submitted the price can reach zero or become negative. The offer price includes the generation cost as well as the transmission cost, along with any profit. Power can be sold or purchased from adjoining power pools.[112][113][114]

Fixed-rate, long-term (contract) plans provide stability in electricity rates. If market energy costs suddenly trend upward where you live, you can rest assured that you won’t have to pay more out of pocket. However, if you want to switch to a different, lower-cost plan before the end of the contract term, you’ll likely have to pay a cancellation or early termination fee.