Energy Conservation

As energy costs continue to rise, knowledge of energy efficient technologies and best practices are becoming more valuable. While these practices have slowly gained acceptance within the water and wastewater industries, increasingly strained budgets coupled with aging infrastructure make energy efficiency a feasible option to save money. Through desire and innovation, our staff has kept the Authority on the cutting edge of energy efficient technologies. As eluded to in the history page of this website the Authority, for the most part, pioneered microturbine technology utilizing anaerobic digester off-gases. In fact, its pilot program was the first of its kind to be successful in North America. That 30 KW digester gas-fired microturbine generator provided the Authority with yet another opportunity to apply current technology with exceptional pay back that proved to further reduce its increasing energy demands.

Upon completion of the Anaerobic Digestion Complex Refurbishment and Upgrade Project in the spring of 2007, the production of digester gases not only increased significantly, but their rate of generation was more stable and easier to predict. During 2008 it became apparent that the Authority should move from the microturbine Pilot Scale generation of electricity to Full Scale, as such a Co-Generation Project Technology Evaluation was undertaken.
Our evaluation focused on microturbine and internal combustion engine technologies. Equipment manufacturers of the above-referenced technologies were provided with current operating data which defined annual digester gas production and digester gas properties. They were requested to select the size and quantity of their equipment with the ultimate goal of providing the maximum annual electrical energy and heat production as a function of available digester gas. Other pertinent data required to be provided by the equipment manufacturers included expected emission rates, the capital cost of equipment including gas conditioning systems, noise, delivery time, and description of proposed factory protection plan and associated cost of the plan.

Once all information was received from the equipment manufacturers, staff and consultants proceeded to conduct life cycle analyses for each of the responses received in the effort to identify the most cost-effective technology for the Authority’s co-generation project. The life cycle analyses considered equipment capital cost, potential rebate amount, annual electrical and natural gas energy savings, and cost of the factory protection plan. The present value of all costs, rebate amount and energy savings was calculated over a nine 9 year timeframe (duration of a standard factory protection plan) at an interest rate of 3%. The technology has the highest net present value was deemed to be the most cost-effective technology. Non-cost factors were also considered in the overall technical evaluation which included the amount of excess gas required to be flared via the waste gas burners, emission rates, and noise. All pertinent data had been compiled and summarized in an “Evaluation Summary- Microturbines verses Internal Combustion Engines”.

As a result of that analysis, the internal combustion engines proposed by Senergie (2 units at 140 kW each) exhibited the highest present value and therefore were deemed to be the most cost-effective technology for the Authority’s co-generation project. In addition, the proposed combined heat and power co-generation system proposed by Senergie utilizes all available digester gas for the production of electrical and heat energy and therefore will not require flaring of excess digester gas, satisfies the allowable emission rates, and easily met established noise criteria of 70dB (A) at a distance of 1 meter (3.3 feet) from the equipment. In fact at the assumed property line of the Authority (a distance of 25 feet from the co-generation equipment), the noise level at this distance reduces to 52 dB(A) which is equivalent to the noise produced by a window air conditioner unit.

Based upon the recommendation of staff the Authority once again decided to move forward with a significant capital investment in an effort to reduce its dependency on third-party energy providers, reduce its carbon footprint, and moreover insulate its User-base form upward spiraling and out of Authority control increases in energy cost.
By the spring of 2010, the project had been designed, publically bid, constructed. The system underwent start-up operations during February and was officially placed into service on March 1, 2010. The table below clearly demonstrates the effectiveness of the project.

      POWER POWER    
    TOTAL PURCHASED GENERATED OFFSET OF MONTHLY
    KW-HRS FROM JCP&L BY SMRSA 3RD COST
    DEMAND KW-HRS KW-HRS DEPENDENCY SAVINGS
  2013          
  JAN 235,250 146,289   88,961 37.82%   9,786
  FEB 187,291 129,746   57,545 30.72%   6,330
  MAR 193,579 136,861   56.718 29.30%   6,239
  APRIL 194,282 113,464   80,818 41.60%   9,698
  MAY 215,240   99,169 116,071 53.93% 13,929
  JUNE   93,726   97,542   -3,816  -4.07%    -458
  JULY 235,566 126,304 109,262 46.38% 12,019
  AUG 208,885 103,586 105,299 50.41% 11,583
  SEPT 217,799 105,980 111,819 51.34% 11,182
  OCT 203,993   99,800 104,193 51.08% 12,503
  NOV 205,679 109,117   96,562 46.95% N/A
  DEC 218,573 132,311   86,262 39.47%   9,489
             
  2014          
  JAN 217,992 123,642   94,350 43.28% 10,379
  FEB 204,030 134,525   69,505 34.07%   7,646
  MAR 166,126   88,532   77,594 46.71%   4,656
  APRIL 190,896 124,294   66,602 34.89%   7,326
  MAY 203,729   81,441 122,288 60.02% 14,675
  JUNE 200,369   68,427 131,942 65.85% 15,833
  JULY 212,253   66,629 145,624 68.61% 17,475
  AUG 213,883   78,758 135,125 63.18% 16,215
  SEPT 191,964   79,542 112,422 58.56% 14,615
  OCT 190,183   84,847 105,336 55.39% 12,640
  NOV 199,351   96,559 102,792 51.56% 12,335
  DEC 220,213 132,704   87,509 39.74%   9,626
             
  2015          
  JAN 224,126 135,481   88,645 39.55%   9,751
  FEB 202,760 132,655   70,105 34.58%   7,712
  MAR 214,362 134,142   80,220 37.42%   8,824
  APRIL 189,225   79,958 109,267 57.74% 13,112
  MAY 200,945   69,516 131,429 65.41% 15,771
  JUNE 206,492   73,171 133,321 64.56% 15,999
  JULY 218,512   75,547 142,965 65.43% 17,156
  AUG 217,258   80,308 136,950 63.04% 16,434
  SEPT 205,616 109,789   95,827 46.60% 11,499
  OCT 198,509   96,675 101,834 51.30% 12,220
  NOV 192,966   94,638   98,328 50.96% 12,783
  DEC 194,008   74,725 119,283 61.48% 14,314
             
  2016          
  JAN 196,423   93,342 103,081 52.48% 12,370
  FEB 210,741 120,461   90,280 42.84% 10,834
  MAR 181,639   82,774   98,865 54.43% 11,864
  APRIL 184,985   77,111 107,874 58.31% 12,945
  MAY 187,080   68,942 118,138 63.15% 15,358
  JUNE 202,083   68,171 133,912 66.27% 17,409
  JULY 217,754   82,865 134,889 61.95% 17,226
  AUG 227,011 110,027 116,984 51.53% 14,269
  SEPT 216,854   93,808 123,046 56.74% 15,148
  OCT 203,846   84,281 119,565 58.65% 14,846
  NOV 190,853   88,147 102,706 53.81% 12,854
  DEC 217,743 102,156 115,587 53.08% 14,127
             
  2017          
  JAN 209,843   98,658 111,185 52.98% 14,127
  FEB 201,118 112,474   88,644 44.08% 11,285
  MAR 181,290   78,167 103,123 56.88% 14,324
  APRIL 147,702   41,424 106,278 71.95% 16,292
  MAY 208,347   92,231 116,116 55.73% 15,219
  JUNE 223,457 135,217   88,240 39.49% 10,693
  JULY 211,425 120,885   90,540 42.82% 11,086
  AUG 227,441 106,517 120,924 53.17% 14,832
  SEPT 209,855 100,941 108,914 51.90% 11,296
  OCT 219,710 110,521 100,189 47.55% 10,235
  NOV 224,896 131,106   93,790 41.70%   9,540
  DEC 232,274 131,463 100.811 43.40% 10,324
             
  2018          
  JAN 234,788 135,215   99.573 42.41% 10,013
  FEB 186,526   88,697   97,829 52.45% 10,199
  MAR 182,375   85,445   96,930 53.15%   9,507
  APRIL 190,739 102,911   87,828 46.05%   9,124
  MAY 207,368 116,029   91,339 44.05%   9,415
  JUNE 212,506   94,980 117,526 55.30% 13,180
  JULY 216,201   89,088 127,113 58.79% 14,401
  AUG 232,650 112,412 120,238 51.68% 15,204
  SEPT 208,222 113,496   94,726 45.49% 10,081
  OCT 187,431 118,337   69,094 36.86%   7,262
  NOV 217,652 172,669   44,983 20.67%   4,489
  DEC 208,532 208,532 0 0.00% 0
             
  2019          
  JAN 206,762 184,355   22,407 10.84%   2,216
  FEB 160,450   80,192   80,258 50.02%   8,457
  MAR 158,483   54,452 104,031 65.64% 11,774
  APRIL 159,753   43,073 116,680 73.04% 14,084
  MAY 210,616   82,144 128,472 61.00% 14,668
  JUNE 204,078 136,431   67,647 33.15%   7,168
  JULY 215,465   84,257 131,208 60.90% 15,413
  AUG 232,003 103,332 128,671 55.46% 14,519
  SEPT 224,122   82,597 141,525 63.15% 15,988
  OCT 271,361 114,566 156,795 57.78% 16,559
  NOV 186,299 123,133 63,096 33.88% 6,678
  DEC 206,958 96,515 110,443 53.36% 11,832
             
  2020          
  JAN 207,372 109,960 97,412 46.97% 10,178
  FEB 172,558 131,877 40,681 23.58% 4,145
  MAR 165,919 72,394 93,525 56.37% 10,305
  APRIL 201,701 131,012 70,689 35.05% 7,265
  MAY 167,480 136,046 31,434 18.77% 3,243
  JUNE 177,340 50,649 126,691 71.44% 15,176
  JULY 190,496 58,181 132,315 69.46% 16,089
  AUG 177,417 72,683 104,734 59.03% 12,016
  SEPT 150,568 46,306 104,262 69.25% 13,054
  OCT 173,789 67,962 105,827 60.89% 7,947
  NOV 159,032 64,895 94,137 59.19% 7,069
  DEC 190,852 92,145 98,707 51.72% 7,412
             
  2021          
  JAN 188,991 11,618 88,373 46.76% 9,877
  FEB 169,719 139,124 30,595 18.03% 3,215
  MAR 181,512 78,030 103,482 57.01% 11,905
  APRIL 165,183 73,408 91,775 55.56% 10,531
  MAY 193,890 110,628 83,262 42.94% 9,132
  JUNE 176,569 162,333 14,236 8.06% 1,069
  JULY 189,700 96,266 93,434 49.25% 10,610
  AUG 215,955 80,875 135,080 62.55% 16,000
  SEPT 208,894 97,352 111,542 53.40% 12,425
  OCT 192,439 86,884 105,555 54.85% 12,910
  NOV 193,393 94,897 98,496 50.93% 11,401
  DEC 222,494 113,249 109,245 49.10% 12,479
             
  2022          
  JAN 226,547 123,132 103,415 45.65% 11,864
  FEB 207,399 116,580 90,819 43.79% 10,583
  MAR 217,960 107,423 110,537 50.71% 13,035
  APRIL 191,218 81,642 109,576 57.30% 12,918
  MAY 186,216 62,236 123,980 66.58% 15,717
  JUNE 221,654 88,973 132,681 59.86% 16,085
  JULY 213,143 80,601 132,542 62.18% 16,379
  AUG 217,744 87,046 130,698 60.02% 15,715
  SEPT 192,825 79,417 113,408 58.81% 15,102
  OCT 175,515 77,457 98,058 55.87% 13,143
  NOV 182,392 81,098 101,294 55.54% 13,614
  DEC 196,130 64,160 131,970 67.29% 18,431
             
  2023          
  JAN 158,217 19,935 138,282 87.40% 26,746
  FEB 157,051 15,729 141,322 89.98% 32,706
  MAR 178,846 -33,020 211,866 118.46% -11,009
  APR 184,160 0 184,160 100.00% 0
  MAY 216,757 29,746 187,011 86.28% 40,432
  JUNE 207,819 123,589 84,230 40.53% 9,160
  JULY 188,140 75,131 113,009 60.07% 15,013
  AUG 204,235 60,852 143,383 70.20% 20,001
  SEPT 197,285 42,078 155,207 78.67% 24,742
  OCT 202,476 40,046 162,430 80.22% 22,694
  NOV 229,594 36,412 193,182 84.14% 33,650
  DEC 240,094 50,800 189,294 78.84% 26,875
             
  2024          
  JAN 209,182 59,580 149,602 71.52% 20,514
  FEB 224,273 33,376 190,897 85.12% 31,291

 

The Authority remains firmly committed to its energy conservation program, and has put in place the following Best Management Practices to ensure its continued efforts into the future:

* Benchmark its energy consumption to that of other similar facilities.

*Performed continued assessments to identify best practices to save energy.

* Established a capital improvement program to generate funds to implement energy-efficiency projects.

* Appointed an energy advocate among facility staff to champion energy-efficiency projects.

* Instituted a program to continuously monitor, review, and assess energy consumption on a monthly and yearly basis.

* Developed and maintained communications with management to increase awareness of the value of energy management.