Hi PAYS® Pals, here's your weekly newsletter!
REMINDER: Register for the CoBank Webinar: Financing the Future Utility Services Model: Tariffed On-Bill Cost Recovery for Grid Edge Investments
Mark Cayce, Curtis Wynn, Holmes Hummel, and Wesley Holmes - a PAYS Pals Dream Team - will be speaking on a panel together on September 9, 2020 at 1 PM ET in a webinar hosted by CoBank!
Curtis will be sharing the results of LibertyHomes’s recent report! See below for more details!
Highlights from LibertyHomes’s Report Utility Value of a Pay As You Save® Energy Efficiency Program to be Published in the 2020 ACEEE Summer Study on Buildings Proceedings
Highlights from LibertyHomes’s Report Utility Value of a Pay As You Save® Energy Efficiency Program to be Published in the 2020 ACEEE Summer Study on Buildings Proceedings
This study analyzed weather normalized hourly meter data from Roanoke Electric Cooperative's (REC) Upgrade to $ave energy efficiency upgrade program based on the PAYS® system.
Results show that homes upgraded over a 21 month period have generated an average annualized reduction in electricity consumption of 4,228 kWh and 1.3 kW of peak demand reduction in winter and 1.2 kW in summer. The resulting net present value to the utility is $3,047 per home over the lifetime of the upgrades, and the total net present value of investments made during the period of this study is $1 million. Thus, even after taking into account the cost of capital, program operation costs, and foregone revenue from foregone wasted energy, REC’s PAYS investment portfolio is generating economic benefits for the utility.
Upgrade to $ave Produced Substantial Electricity Reduction: The sample of 147 U2$ Program participant homes had a calculated mean annualized reduction in electricity consumption of 4,228 kWh (18%) and a median of 4,603 kW (21%). A visualization of a sample home pre- and post-upgrade can be seen in Figure 2. The average project cost of the 147 home sample was $7,344, the average for the 274 home source dataset was $6,977.
The Type of Upgrade Strongly Influences Impact on Electricity Consumption and Load: Subdividing the sample based on type or combination of upgrades provides additional insight, although the sample sizes in some cases are too small to draw firm conclusions (Table 4). Overall, homes electrically heated prior to the upgraded, a combination of HVAC and home envelope improvement (weatherization), and homes that received HVAC only (because the building envelope performance did not require an upgrade) had the highest peak demand reduction >2 kW (24.F) for both, and 1.26kW and 1.86kW (91.F), respectively, and mean reduction in electricity use 6,443kWh (27%) and 7,147 kWh (35%), respectively (Table 4). Preupgrade electrically heated homes receiving only weatherization saw reductions 70-75% lower than those with HVAC. BE homes always received a new HVAC and performed better on average when this was accompanied by weatherization.
U2$ Delivered Substantial Peak Demand Reduction at All Monthly System Peaks: For Roanoke Electric there is not one measure of peak demand reduction but 12 because its wholesale demand charge is based on Roanoke’s load during the hour with the highest system load during each month.
