Case Study
Multivesco
200 Rue Montcalm
Gatineau, Quebec, Canada
| FINANCIAL SAVING |
$7,011 (CAD) |
| CO2 SAVING |
110,400 kg |
A pilot of EndoTherm was run by Multivesco at 200 Rue Montcalm in Gatineau after recommendation from WSP’s team in Ottawa. This modern, glass fronted Class A office is heated and cooled by a two-pipe heat pump system. This means EndoTherm will provide improvements in heat transfer throughout the heating and cooling season. The product was installed into Tower 1 which takes up 60% of total electrical consumption of the site.
The site is not sub-metered and thus the total consumption includes other electrical loads such as lighting / computers. This baseload (none-HVAC consumption) will be identified as part of the analysis. 60L of EndoTherm was installed into the system in January 2019.
The measurement & verification is based on the ‘International Protocol for the Measurement & Verification of Performance (IPMVP).’ Historical data was supplied by WSP/Multivesco over the past 2 years. This did include some estimated data which was eliminated from consideration. The consumption data was normalized using Heating & Cooling Degree Data from the nearby weather station at Gatineau Airport at a baseload of 18.5°C.
The billing data for April/May and May/June was estimated data. Thus the meter reading taken on the 31st July 2019 suggests that this estimate was on the low end as the value for June – July was higher. If you average these three months there is a saving compared to similar months in previous years.
The final time monthly period runs from the 23rd June – 31st July runs for 38 days. This is seven days more than the rest of the monthly periods and thus the non-electrical baseload will be increased. To reflect this the baseload will be increased from 293,403kWh to 359,655kWh.
The predicted consumption is calculated by inputting the combined HDD+CDD into the line of best fit equation y= 317.7x + 293,403. This is compared with the predicted consumption to calculate the saving during the time period.
Results
| From | To | No. Days | HDD | CDD | HDD+CDD | Usage (kWh) |
Data Type | Predicted Usage (kWh) |
Usage Difference (kWh) |
|---|---|---|---|---|---|---|---|---|---|
| 2019-01-24 | 2019-02-23 | 30 | 901.1 | 0 | 901.1 | 545,400 | Actual | 579,682.47 | 34,282.47 |
| 2019-02-24 | 2019-03-25 | 29 | 745 | 0 | 745 | 525,600 | Actual | 530,089.5 | 4489.5 |
| 2019-03-26 | 2019-04-23 | 28 | 446.5 | 0 | 446.5 | 360,000 | Actual | 435,256.05 | 75,256.05 |
| 2019-04-24 | 2019-05-23 | 29 | 261.7 | 2 | 263.7 | 287,100 | Estim | 377,180.49 | 90,080.49 |
| 2019-05-24 | 2019-06-23 | 30 | 102.7 | 29.1 | 131.8 | 287,100 | Estim | 335,275.86 | 481,75.86 |
| 2019-06-23 | 2019-07-31 | 38 | 14.3 | 171.5 | 185.8 | 411,300 | Actual | 418,683.66 | 7,383.66 |
| TOTAL | 184 | 2471.3 | 202.6 | 2,673.9 | 2,416,500 | 2,676,168.03 | 259,668.03 |
Savings
| Compensated Saving: |
11.64% |
| Total Cash Saving: |
$7,011 (CAD) |
| Total CO2 Saving: |
110,400 kg |
Over the 6-month pilot period the actual consumption was 259,668kWh lower than the predicted consumption. This is a 9.7% reduction in consumption. It is worth noting that the baseload (293,403kWh) for each month is roughly 50% of the total consumption thus cooling accounts for only 50% of total consumption. This would make the HVAC saving 19.4%. As EndoTherm was only installed into Tower 1 (60%) the saving is therefore 11.64%
This is higher than the average saving achieved by EndoTherm over the past 5 years and can most likely be accounted for by variance in other electrical consumption on site. At 4.5c/kWh this is a saving of $7,011. This also confirms that the product investment has a typical ROI within 1 year.
Each kWh saving is also a reduction of CO2e. The total saving is equivalent to 110,400kg (110.4 metric tonnes) of CO2e.