Our Promise

The Energy Efficiency Promise

Your builder and Efficiency Promise will deliver actual and promised energy efficiency for your new home.

prom•ise - noun: A promise or assurance, especially one in writing, that something is of specified quality and / or that it will perform satisfactorily for a given length of time: a money-back guarantee.

guar•an•tee - noun: to engage to protect or indemnify: to guarantee a person against loss, something that assures a particular outcome or condition

ef•fi•cien•cy pro•mise: program - a limited guarantee that the energy you use to heat and cool your new home (the "Heating/Cooling Energy", as defined and calculated in the account analysis*) will not exceed the Guaranteed Usage listed on the "Energy Efficiency Promise Certificate", or we will pay you the difference for the first two years of owning your home.

For simplicity purposes, the guarantee is represented in both dollars and in energy units. But, the guarantee is of the energy usage (in 'Kwh' of electricity or 'mcf' of gas) that is above your base load (base load is the energy used in the home for all elements other than cooling or heating the home.)

With the Efficiency Promise process, your builder has invested in a substantial effort to design, build, inspect and test a home for delivered energy efficiency. Based on the confirmed results from your homes actual construction process, Efficiency Promise works with your builder and issues an Efficiency Promise limited guarantee certificate that states how the home will perform for heating and cooling. Efficiency Promise will be responsible for paying 100% of the difference if the guarantee amount is exceeded in either of the two first years of occupancy.

Estimated Energy Use (without occupants):
It is easy to estimate the total energy usage (and the total utility bill) for a home that has no occupants. The performance of the total home - taken as a system - has variables (weather) that can be simulated, variables (home and duct tightness) that can be tested and static measures (window and insulation levels) that can be inspected and do not change. Therefore, a total estimate for energy usage can be determined and multiplied against the electricity or natural gas rate to calculate an estimated utility bill total amount.

However, it is impossible to estimate total actual energy usage - except in the theoretical world. This is because actual energy usage will always vary.Some of the larger uncontrollable and unpredictable variables for actual energy usage and energy expense are:
  • Thermostat Setting - In hot seasons, the cost to cool a home in Texas varies approximately 10% for every degree. A home with the thermostat set to 68 degrees will nearly double the summer electricity bill compared to the exact home with the thermostat set to 78 degrees.
  • Number of Occupants - The number of occupants and their chosen lifestyle can have a radical difference on energy usage. Lights vary. Entrance and exits from the home vary. Amount of hot water and energy to heat that water varies.
  • Plug load - There is no way to tell (nor guarantee) how many appliances, computers, big screen televisions will be plugged in and how often or how much energy they will use.
  • Homes have many other large and unpredictable variables for energy usage. Some of these may be the Home Office, or a Pools/Hot Tubs. Electric Cars that plug in and recharge every night could have a very significant impact on the total electricity used.
  • Retail Electric Provider - There are many providers of electricity, varying rate plans, different choices on green power or discounts for demand response. All electric bills contain various charges for delivery of power (TDSP charges), various fees and other taxes. These costs, fees and taxes vary by utility company, city and geography and must also be excluded from a calculation of utility bill cost guarantees.
Annual Account Analysis to determine the Efficiency Promise for your Home:
Your utility bills include all the energy you use for your home, including activities other than heating and cooling (such as lighting, appliances, plug load, pools and spas). Upon your submission of a claim for a "period", TexEnergy will calculate whether you are entitled to receive a reimbursement amount under this Limited Guarantee by estimating the part of your total energy use that applies to heating and cooling your home, called the Heating/Cooling Energy, and then comparing this energy use to the Guaranteed Usage (on the front of the Energy Efficiency Promise Limited certificate). The following is a description of the method TexEnergy uses to calculate your Heating/Cooling Energy use:

First, for the claimed "period", Efficiency Promise calculates the average of your four lowest months of energy use when your home is occupied. Efficiency Promise assumes that this average estimates the energy your family used for activities other than heating and cooling your home. That average is then multiplied by 12 and subtracted from your total energy use during the claimed "period". The remaining amount estimates the Heating/Cooling Energy, which is the energy used to heat and cool your Home during the claimed "period". If a payment of your claim is determined, the amount is calculated by averaging the "per unit" cost (of mcf and/or Kwh) that you paid over the course of the 12 month period that was submitted for your claim and multiplying it by the usage difference.

We will manually re-input the data to confirm your usage. The guarantee is combined for the net of both the heating and the cooling guarantee. We will calculate against both the "mcf" - natural gas and "Kwh" - electricity usage. If the net number of the two exceeds the energy usage on your "Efficiency Promise Guarantee", we will send you a check for 100% for the amount exceeded - using the amounts of usage exceeded multiplied by the rate you paid for electricity or gas.

* Account analysis, definitions, usage and periods are subject to the terms and conditions set forth in this program. They are listed on this web site, are repeated during registration of your home in the program after closing. The terms and conditions are also listed on the back of your Efficiency Promise Certificate.