While performing SRP energy audits, we are surprised how many homeowners don’t actually know what SRP rate plan they are. As energy auditors our job is not only to perform the cool test on homes like our thermal camera scan and depressurization test, but also to seek out areas of energy waste that can be changed by managing energy usage and are more lifestyle changes. We’ve seen homeowners reduce their energy bills by as much as 60% simply by managing their energy use on the right SRP rate plan. By simply managing your energy better, you can cut your energy bills without doing any other work. In this post we will go into the best SRP rate plans you should choose for your home and how best to manage your energy to get the most savings.
By far the biggest way to reduce your electric bills is with SRP’s E27p plan or SRP Time-of-Use plan. The E27p plan is a pilot plan that SRP uses for solar customers and is similar to APS demand based rate plans, however you don’t have to have solar on your home to sign up for this plan, anyone can do it. SRP’s E27p plan charges a low off-peak energy rate, a high on-peak energy plus a demand charge if your energy usage exceeds a certain amount during a 30 minute period. The important thing about the E27p and Time-of-Use plan is that the off-peak energy rate is very low, cheap energy. We suggest customers use this plan and take full advantage of the cheap off-peak energy. Typical SRP energy rates are $0.12 per kWh, the E27p plan is only $0.05 per kWh and $0.07 per kWh for Time-of-Use. Since the E27p energy is so cheap, we want you to turn your thermostat down to 72 degrees in the summer during off-peak hours. Yes, that’s right, you want to stay nice and coo during the summer months, even if you are gone to work.
This strategy is called super-cooling and pre-cools your home before SRP’s peak hours of 2-8 pm with E27p or 2-8 pm with Time-of-Use plan. Then at peak hour time, your thermostat will be programmed to turn up to 84 degrees (or higher) and if your home is well sealed and insulated, your AC system will ideally never turn on and you avoid SRP’s high on-peak rate charges. For SRP’s Time-of-Use, during peak hours their energy rate balloons to $0.24 but there is no demand charge with the high peak hour rate. Both the E27p and Time-of-Use plan are good options if you can take advantage of supercooling your home.
SRP Rate Comparison
*Demand charges are$9.43 for the first 3 kW, $17.51 for the next 7 kW, $33.59 each additional kW
Which Type Of Homes Would Benefit Most From Pre-Cooling Your Home?
Who Would Not Benefit From Changing Their SRP Rate Plans?
Depending on your lifestyle, pre-cooling your home with these rate plan changes may not be a good option. If you or someone in our home works nights or as an irregular schedule, it may be hard to keep the AC system off during peak hours if they want the temperature to be 76 degrees during the middle of the day. To take full advantage of demand control (penalty) rate plans, the pre-cooling strategy is essential. You need to be able to reliably, day after day, lower the thermostat during off-peak hours and then raise it during peak hours to take advantage of the utility company’s cheap off-peak energy rate. If you are like me and sometimes work from home or have someone home on an irregular schedule then following the pre-cooling plan will be difficult to do because, of course we need to be comfortable in our own homes!
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