Need Help with Arizona SRP Time of Use

Energy
1

So I have tried to wrap my head around the methods that can be used to manage my Hoem Energy consumption but I am at a standstill. My electric provider is SRP in Arizona and I am on the Time of Use plan. The Peak and Of Peak times and rates change based on both the Month and the hour. In months May to October Peak is 2pm-8pm during weekdays and the rest is off peak. During months November to April the rates change, the Peak is 5:00 am to 9:00 am and again 5:00pm to 9:00 pm weekdays and the rest is off peak. In months July and August the peak is 2:00pm until 8:00Pm and again the rates are higher for peak and off peak. I have tried using the Utility Meter integration which creates a select and the Utility meter helpers and I have also tried creating this using he configuration.yaml. I know I need to create automations that switch out the peak and off peak but I am not sure do I need 6 utility meter sensors based on the 6 different rates and then 6 automations to switch them in and out based on time and month and then I need to bring in all 6 sensors to the Energy dashboard as consumption sources? Then I would need to somehow set the rates correctly for each in the dashboard? It just seems a bit of a mess and so I am holding up. For now all I have is my Emporia Vue 2 Day Sensor for total use going into the dashboard and I am fine tuning the multiplier to get the usage to match what is showing in the SRP website. Any help is appreciated.

2

I solved my time of use problem with SRP Time of Use programs in this post - Energy Sensor Price - to handle changing energy tariff rates - #15 by Trebacz I use an Emporia VUE and the sensors I created. It gives me real time cost during the day - and the energy dashboard looks awesome. Hope it helps.

1 Like
3

Hello,

Iā€™m on an SRP solar plan (E-27), which is similar to TOU (with lower energy pricing) but which adds a demand charge set by the maximum power demand (kW) during any 30-min peak-rate period for the billing month. There is an alternative plan which uses average peak-period demand, but those rates are generally higher.

The strategy for controlling costs are similar to standard TOU, but application is more ā€œsevere.ā€

I have thought about how to construct a cost-sensor for demand. Since the power demand is averaged during each 30-min window, the demand is functionally equivalent to Energy/time = Energy (kWh)/0.5h = 4*Energy (kW) (Energy measured each 30-min window). But in HA I do not know how to integrate over an arbitrary time window (the default for Riemann seems to be 1 hour).

If somehow I managed to create such a sensor Iā€™d need to look at the largest value for the billing month (using a look-up table for price).

So Iā€™m checking on the my SRP dashboard online frequently to make sure I keep my power demand low. If anyone here has a better idea Iā€™d be eager to know! :grinning:

4

That is more ā€œsevereā€ā€¦ Not sure I can help, but itā€™s certainly possibleā€¦

5

I know this is an old thread but I wanted to inquire with you all if you have had any issues with the Emporia Vue operating through the hot summers? Iā€™m concerned Iā€™d buy and install it only for it to fry itself.

2 Likes
6

Hi Matthew,

I use a Sense monitor, which is in my breaker panel enclosure on a west-facing wall in Phoenix. No issues with heat.

Maybe you could reach out to Emporia for operating ambient specs.

Good luck!

7

No issues here. Main Panel is on the West side of the house and gets direct Az. sunlight. Emporia Vue 2 is inside.

1 Like
8

No issues here. Also in Arizona. My electrical panel is south facing and in direct sunlight. It has been rock solid for 2 years.

1 Like
9

@azsoccerpop
I know this is an older thread, but for the TOU (e26?) plan, here is my template sensor:

  - sensor:
    - name: Current Energy Rate
      unit_of_measurement: 'USD/kWh'
      icon: mdi:currency-usd
      state: >-
        {% set now = now() %}
        {% set month = now.month %}
        {% set hour = now.hour %}
        {% set day = now.weekday() %}
        {% if day in [5, 6] %}
          0.0885
        {% elif month in [5, 6, 9, 10] %}
          {% if 14 <= hour < 20 %}
            0.227
          {% else %}
            0.0903
          {% endif %}
        {% elif month in [7, 8] %}
          {% if 14 <= hour < 20 %}
            0.2585
          {% else %}
            0.0906
          {% endif %}
        {% elif month in [11, 12, 1, 2, 3, 4] %}
          {% if 5 <= hour < 9 or 17 <= hour < 21 %}
            0.1145
          {% else %}
            0.0885
          {% endif %}
        {% else %}
          0.0885
        {% endif %}
1 Like