Successful 2020 bond issue

Published: 8/4/2020  3:16 PM
Recently, we successfully issued new money and refunding bonds, selling $251.7 million in Refunding (2020 A/2020B) bonds and $85.4 million in New Money Utilities Systems Improvement Revenue (2020C) bonds. “We are extremely pleased with the pricing ...

​Blue-green Algae found at Pikeview Reservoir

Published: 8/1/2020  11:07 AM
Pikeview Reservoir, a popular fishing lake in central Colorado Springs and part of our water system, recently tested positive for blue-green algae.  While the reservoir is still safe for fishing, humans and pets are prohibited from entering the wate ...

The best native plants for your landscape

Published: 7/30/2020  1:11 PM
If you’re looking for flowers and shrubs that can tolerate hot, dry conditions with grace, take a look at our foothills landscape in the Water-wise Neighborhood of our Demonstration Garden. This garden showcases native plants that thrive when temper ...

Colorado Springs now powered by wind

Published: 7/22/2020  9:39 AM
Only days after we announced our plan to reduce carbon emissions by 80% and close our coal power plants by 2030, we added wind power to our portfolio. For the next five years, Colorado Springs will receive 60 megawatts of renewable energy from two ...

Six steps for a green summer lawn

Published: 7/9/2020  2:33 PM
​It can be a challenge to keep your lawn green and healthy during the hottest months of the year. Here are six ways to reduce brown spots while watering within the new water-wise rules. 1. Make sprinkler repairs. New brown spots are often caused by ...

Our panels. Your power.

Published: 7/6/2020  2:37 PM
​L3Harris Technologies, a global aerospace and defense innovator with offices in Colorado Springs, is among a growing number of companies seeking to make their operations even greener. Pepe Alicea, senior facilities manager, was exploring solar ener ...

Thank you: Your input helped shape our energy future

Published: 6/30/2020  4:08 PM
We're committed to a new energy future that is cost-effective, resilient and environmentally sustainable. Through our sustainable energy plan, we will: Commit to our community with industry-leading reliability and resiliency and support the econom ...

Six energy-saving summer tips

Published: 6/17/2020  10:52 AM
​It’s starting to heat up, and your energy bills might rise as you crank up the air conditioner. We’ve got six tips to help you stay cool while saving energy this summer. 1. Make sure your ceiling fans are rotating in the proper direction.When po ...

Protecting our infrastructure and our customers

Published: 6/12/2020  9:54 AM
Sometimes projects fall into our laps when we are least expecting them. That’s what happened to Jed Chambers, Kyle Hinton and Jason Messamer from the Systems Planning and Projects (SPP) division recently when they went out to look at Monument Creek ...

Six steps for your healthiest lawn

Published: 6/3/2020  8:45 AM
Enjoying a healthy, green lawn is a hallmark of Colorado summers. If you’re planning to install a new lawn this summer, here are six steps to help your project succeed. 1. Prepare the soil. Smart soil preparation is one of the best things you can d ...

 Next >>

Demand Control Strategies During Load Step Changes   

by  Steve D.  on  4/30/2020

Empty OFfice CubiclesEnergy management isn’t always about energy, but it is always about dollars.

For some business customers, demand charges dominate the bill, especially when large demands occur for short periods of time. When short-term demands are increasing demand charges, this is a prompt for demand control. Methods vary but the point is to lower short-term demands – usually by ‘spreading out’ the energy use over time, smoothing out the usage pattern.

One form of self-help for demand cost control is treating short-term large demands that stem from the ‘catch up’ responses - called step changes - such as:

  • Coming out of unoccupied mode.
  • Going from idle to event mode.
  • Coming out of hibernation mode.

The general solution is a combination of load limiting large loads, or an array of small loads, with early start. Interval data is an excellent tool for spotting errant demand patterns and focusing efforts, and can be found on the utility customer portal at no charge.

  • For heating and cooling equipment, extra time is needed but the energy use is the same.
  • For customers that already have a robust automatic control system, adding some demand control logic can produce savings with no capital outlay other than time.
  • Manual solutions are possible, but automation is usually more successful because the utility demand savings require the benefit to be persistent. 

Equipment with built-in ‘load limiting’ features are an enabler for demand limit control. A useful business strategy when selecting or replacing equipment is to consider demand limiting capabilities for chillers, heaters, fans and lights so they make it easy to implement demand limiting control.

We just published a new efficiency article: Demand Control Strategies During Load Step Changes that provides more details and some specific examples, including different ways demand charges can impact your bill.

While the article provides a good start, each facility and process is unique, and the operator’s expertise can find other ways to reduce demand charges and reduce utility expense in general. Sometimes a habit change is all it takes.


Add a comment