Most recently some townhome owners in Denver needed to share a low voltage quartz halogen landscape lighting system to illuminate their front entrances. The as-built configuration of the townhomes dictated that only one of the townhomes would have the low voltage transformer installed – and subsequently would have to provide all of the power for the entire lighting system. The respective homeowners agreed to split the annual electricity bill/usage for the system and asked me to compute how much that would be.

For this system, there were a total of two uplights (well lights at 35W each) and four path lights for the walkways (at 20W each) – for a total energy usage of 150W. For safety and security, the homeowners wanted the lights to be on from dusk to dawn throughout the year.

By accessing the U.S. Naval Observatory website and doing some computations, I was able to determine that there are a total of 4,306.29 hours of darkness for the entire year in Denver, Colorado. By multiplying 150W times 4,306.29 hours you get 645,943.5 watt-hours or 645.9 kWH. The average cost per kilowatt-hour in Denver is projected to be 11.3 cents through the year. By multiplying $.113/kW-H times 645.9kWH, you end up with a total operating cost of $72.99 per year, or $6.08 per month or $.20 per night. Most police departments will tell you that this is a small price to pay to enhance your home’s safety and security every night of the year.

Ken-Caryl House Lighting

The house on the left (also using a low voltage quartz halogen lighting system) has a total of 8 uplights (35W each) and 3 path lights (20W) each – for a total of 340W. Dusk to dawn operation costs $165.44 per year or $13.78 per month or $.45 per night.

If this same low voltage quartz halogen system is replaced by a low voltage LED lighting system in the future, the total power requirement would only be 80.7W and would result in annual energy costs of $39.26 per year or $3.27 per month or $.11 per night - a 76-percent energy savings over the quartz halogen system.

So in other words LEDs are the future but even with a low voltage quartz halogen lighting system, you’re still saving money with operating your outdoor lighting in comparison to line voltage lighting.

OLP of Colorado will be showcasing the latest energy efficient lighting products for illuminating community entrances, parks, clubhouses and common areas. LED, ceramic metal halide, and quartz halogen fixtures will be on display, and multimedia photos will show what actual installations look like after dark.

The event provides an opportunity for hundreds of community/HOA managers, property managers, and contractors to interact and attend the trade show and educational sessions.

Between the hours of 4:00 pm and 6:00 pm, friends, family and business associates of OLP of Colorado are welcome to come visit us (Booth #74) and stroll throughout the air and space museum to view the historical aircraft and aerospace exhibits. As a former aerospace engineer, I know I can’t wait!

We look forward to seeing you there!

At Outdoor Lighting Perspectives (OLP) of Colorado, we certainly emphasize the use of energy efficient lighting products such as low voltage quartz halogen, low voltage LED, line voltage Ceramic Metal Halide, line voltage induction fluorescent, and Lighting Control Automation™ for our residential and/or commercial customers. For interior lighting, Compact Fluorescents (CFLs) and LEDs are helping to greatly reduce homeowners’ energy usage as well.

Sometimes, even the little things add up. In OLP’s business operations we recycle copper wiring and the copper cores of low voltage transformers, stainless steel transformers, office papercardboard, and aluminum cans. For service calls and installations, we route and schedule our crews/vans to minimize travel time and mileage.  To improve fuel economy, we off-load unnecessary inventory/tools and ladders on roof racks before heading off to that day’s job tickets.

To take part in Earth Day festivities being held this week in Colorado, please take a look and participate in the events shown below:

EARTH DAY 40TH ANNIVERSARY - NREL Visitors Center, Golden; April 19 – 23; free events during the week; www.nrel.gov

EARTH DAY ON EAST MOUNTAIN - 240 – 262 E. Mountain Avenue, Old Town Fort Collins; April 22. Block Party – celebrate Earth Day with live music/food, demos and presentations about growth and sustainability. www.facebook.com/home.php?#!/event.php?eid=105316966166440&ref=ts

DENVER BOTANIC GARDENS - 1007 York St., Denver; April 22; FREE DAY for Colorado residents; www.botanicgardens.org

EARTH DAY AT RED ROCKS - Saturday, April 24; Red Rocks Amphitheater; Morrison. Eco-friendly events – musical performance by Aspen Meadow, wolves from W.O.L.F. Sanctuary, clean up event at the park and environmental displays. www.windstarcoloradoconnection.org

PIKES PEAK EARTH DAY - Saturday April 24; Cornerstone Arts Center – Colorado College, Colorado Springs. Theme – 40 Years of Earth Day – ReVision, RePurpose, ReNew. www.Pikespeakearthday.org

EARTH FEST 2010 - Sunday, April 25; downtown Boulder – Central Park, Bandshell and Farmers Market. Eco activities/events – renewable energy demos, 5th Annual Dirt Day Advanced Challenge/EXPO, live music and organice food. www.earthfestboulder.net

So whether you celebrate at one of these events or by doing something for Mother Earth at home, have a good time and remember that Earth Day should be every day of the year!

Started in Australia in 2007, EARTH HOUR’S support has grown worldwide and some of the most famous buildings will go dark for one hour during their local 8:30 to 9:30 pm time period including Toronto’s CN Tower, San Francisco’s Golden Gate Bridge, Rome’s Colisseum, and Paris’ Eiffel Tower.

In Colorado, both the Governor’s Mansion and the State Capitol building will go dark for one hour. Governor Bill Ritter said that Colorado has become a great example of how a state can implement aggressive energy reduction goals while growing a New Energy Economy. I am proud that Colorado can be a part of this worldwide effort to bring attention to the dire consequences of global climate change.

Please join Outdoor Lighting Perspectives of Colorado in supporting this worldwide effort. We of course are trying to do our part by reducing the energy/carbon footprints of both our residential and commercial lighting installations. By introducing and installing energy efficient LED lighting systems for residential applications as well as Lighting Control Automation™ - we are greatly reducing our customer’s usage of electricity. On the commercial side, we are installing energy efficient Ceramic Metal Halide fixtures.

Close Up of LED Fixture at Diamond Ridge Installation

About a month ago there was a story reported around the country that many northern cities had been experiencing problems with their new LED traffic lights. Apparently in some of these cities, the LED traffic lights would not generate enough heat in order to melt the accumulating build up of snow and ice during the winter months. It was also reported in the local news that fortunately this has not been a problem in the Denver metro area with all of the hours of sunshine we typically receive.

Before we actually began using LED fixtures for architectural and landscape lighting, we also wondered how well our new and innovative fixtures would melt the snow. As you can see in the above photo, they do quite well – thank you.

The actual reason that these fixtures melt the snow is inherent in their initial design as well as manufacturing. The main factor that limits the life of the LEDs/electronics is the heat build up inside the fixture. Our manufacturer has placed the LED driver in the mounting stake for the fixture – not inside the fixture itself as have most manufacturers.

In addition, any remaining heat generated by the LED bulb itself is dissipated by means of cooling fins as shown in the Computer-Aided Engineering (CAE) thermal model below that was used to design a deck light. As a forner aerospace engineer, my expertise had been in thermal and fluid flow modeling for jet engines, rockets, spacecraft, and solar energy projects – so I tip my hat to the innovative engineers at our manufacturing company!

CAE Thermal Design Model for LED Deck Light

The fixtures are machined out of solid brass (aluminum is also an option) to provide the thermal heat exchange capabilities. Not only are the fins an engineering design feature, they add to the aesthetic appearance of the fixtures as well. By pulling the heat away from the LED bulb itself, the fins and fixture reach an outside surface temperature of 96-degrees F – enough to melt snow.

The design and testing of these fixtures have been on-going during the last seven years. Brass fixtures have a lifetime warranty, and the LEDs and electronics have had a five year warranty. However, we have heard that this warranty may be getting a lot better in the near future – so stay tuned!

LED Lighting at Diamond Ridge Estates

Our largest LED lighting project to date was completed about a month and a half ago for the Diamond Ridge Estates HOA. The entrance is located east of Castle Rock along North Crowfoot Valley Road. A total of 39 8.7W  low voltage LED fixtures were installed to illuminate the entrance monument as well as trees along Diamond Ridge Parkway on both sides of the street and island. In addition, a 3.7W LED underwater fixture was also installed to illuminate the water feature located at the end of the entrance island.

The HOA made the decision to be GREEN and select the LED lighting option – not only for reduced energy costs but longer bulb life as well. By installing low voltage LED fixtures instead of low voltage quartz halogen fixtures, the HOA will reduce their energy usage for lighting this entrance by roughly 75 to 80 percent.

So the next time you’re driving along North Crowfoot Valley Road after dark, be sure to watch for the beautiful and energy-efficient lighting at Diamond Ridge Estates.

OLP Exhibit at HBA Home & Garden Show

We just finished a three-day HBA Home and Garden Show in Colorado Springs last weekend. The low voltage LED landscape lighting fixtures were a big hit at the show. Many visitors to our exhibit commented that the fixtures were beautifully crafted and were so bright and white that they could not possibly be LEDs!

There seemed to be a lot more interest at this year’s show due to the financial difficulties being experienced by the city of Colorado Springs, not unlike many state and municipal governments nationwide. You might wonder what budgetary cutbacks have to do with landscape and architectural lighting, but the fact of the matter is that the city has literally turned off one-third to one-half of the streetlights throughout the area.

That has effectively created vast expanses of “dark and scary” areas throughout the metro area. Some of our existing customers have lighting to deter vandalism and others have lighting so that they can see the neighborhood bear or mountain lion before letting their dog out after dark.

The good news is that our energy efficient lighting systems can provide lighting for safety and security to those homeowners who no longer have the use of their neighborhood streetlight.

The show hours on Friday are from 1 p.m. to 8 p.m., on Saturday from 10 a.m. to 8 p.m., and on Sunday from 11 a.m. to 4 p.m.

We’ll have residential and commercial fixtures on display, as well as our new and innovative low voltage LED landscaping lights that won a Hot Products award from 9News at the Colorado Garden and Home Show.

We look forward to seeing you at the show!

Woolly Mammoth in Entrance Garden

There are only FOUR days remaining in the beautiful Colorado Garden and Home Show. You can begin your day at the show in the entrance garden where ice age creatures such as the woolly mammoth and ancient tigers come to life. Stroll the magnificent gardens and see the sights and aromas of spring as you take in the 400,000 square feet of exhibit space in the Colorado Convention Center.

Please be sure to save some time to visit the 9News Hot Products Zone which is located at the top of the escalators near the show entrance. There you will see the nine latest and greatest gardening and home improvement products – including the LED landscape lighting line by Outdoor Lighting Perspectives of Colorado.

Our exhibit is located in booth #1442 - and there you can see the LED lighting fixtures up close as well as the latest in low voltage quartz halogen fixtures, line voltage Ceramic Metal Halide fixtures, and Lighting Control Automation™.

Outdoor Lighting Perspectives of Colorado Exhibit - Booth #1442

We certainly look forward to seeing you at the show!

Outdoor Lighting Perspectives of Colorado will be exhibiting at the upcoming ProGreen Expo to be held at the Colorado Convention Center in Denver – on Wednesday, February 10th (9 a.m. – 4:30 p.m.), February 11th (9 a.m. – 4:30 p.m.) and Friday (9 a.m. – 1 p.m.) in Booth #2227.

The ProGreen Expo is one of the largest product/trade shows in the country for the GREEN and landscaping markets with over 600 exhibitors. OLP of Colorado will be launching its new Product Sales Division that will be able to distribute our high quality products/services directly to landscaping contractors. OLP of Colorado will be showcasing its low voltage quartz halogen and LED lighting fixtures/transformers, as well as its line voltage commercial grade Ceramic Metal Halide fixtures.