The latest generation of LED (light emitting diode) exterior lighting is significantly more energy efficient than even high pressure sodium fixtures (the orange-tinted street lights that are commonly used). And what’s made the recent use of LED lights take off is the dramatic decline in prices for all types of LED fixtures. However, especially when considering exterior lighting like parking lot or roadway lights, careful consideration of the color hue of that lighting is important. The following is excerpted from the site of the non-profit International Dark-Sky Association (IDA), the recognized authority on light pollution.
…The price of commercial LED lighting products continues to drop, and capital cost recovery times for new LED street light installations, once 10 years or more, are now typically less than five years and continue to decline. As barriers to implementation fall, LEDs are gaining momentum as a lighting technology of choice in new outdoor installations.
Blue Light Is Bad
New technical capabilities often come with unanticipated challenges. White LED lighting often has significant levels of potentially hazardous blue light. IDA published a report in 2010 detailing the hazards of blue-rich white light sources. In the years since, scientific evidence has solidified around its conclusions.
Outdoor lighting with high blue light content is more likely to contribute to light pollution because it has a significantly larger geographic reach than lighting with less blue light. Blue-rich white light sources are also known to increase glare and compromise human vision, especially in the aging eye. These lights create potential road safety problems for motorists and pedestrians alike. In natural settings, blue light at night has been shown to adversely affect wildlife behavior and reproduction. This is true even in cities, which are often stopover points for migratory species.
The promise of cheaper outdoor lighting based on electricity and maintenance savings from LED conversion should be weighed against other factors, such as the blue light content of white LEDs. Blue-rich sources are the most efficient LEDs in terms of the conversion of electricity to light, and therefore have the lowest electricity cost to produce a given amount of light compared to “warmer,” less efficient white LED lamps. Every effort should be made to diminish or eliminate blue light exposure after dark.
There are already many white LED options now available on the outdoor lighting market and that number will only rise in the future. IDA has developed a set of recommendations for those choosing lighting systems. These suggestions will aid in selecting lighting that is energy and cost efficient, yet ensures safety and security, protects wildlife and promotes the goal of dark night skies. These include
- Always choose fully shielded fixtures that emit no light upward
- Use “warm-white” or filtered LEDs (CCT < 3,000 K; S/P ratio < 1.2) to minimize blue emission
- Look for products with adaptive controls like dimmers, timers, and motion sensors
- Consider dimming or turning off the lights during overnight hours
- Avoid the temptation to overlight because of the increased luminous efficiency of LEDs
- Only light the exact space and in the amount required for particular tasks
Approved by the Board of Selectmen 5-0, Article 7, a ban on single-use plastic carryout bags, will be on the ballot November 3. Voting is at York High School between 8 AM and 8 PM.
Ways You Can Help Pass the
York Bag Ordinance
Canvass for Support. You can help by volunteering to canvass likely voters or drive a canvasser as they knock on doors. We will orient you and send you off with literature, addresses and a map. If you are a supporter of the ordinance and like to talk with people, we will be canvassing every Saturday and Sunday this month from 10 am – 5 pm (except, Saturday, Oct. 17) . You don’t have to be a York voter to canvass. If you can give us even a few hours, please do so. The outcome could come down to a small number of votes either way so voter outreach is critical. Email Victoria Simon email@example.com or call 363-6140 for more information and to sign up.
Letter Writing. Help convince York voters to support the ordinance by writing a letter to the editor. Check our website for ideas and to read the full text of the ordinance. You can email firstname.lastname@example.org for assistance in writing your letter. Also, if you aren’t sure how to submit your letter, send it to Judith McAllister (email@example.com) who will submit your letter to the paper for you.
Add Your Name to a List of Supporters of the Ordinance. We would like to put a list of York residents who support the ordinance on our website to encourage others to support the ballot article. If you are willing to do that, please fill in the simple supporter form. Thanking you in advance.
Donate. For any donation of $5 or more, you can receive one of BYOB York’s reusable bags. They are compact, lightweight, and perfect for running into a store for a couple of things. You can also buy raffle tickets at our booth at Marketfest, Oct. 16-17 to win one of two prizes. Your donations support our ongoing educational effort on plastic bags and the campaign to pass the York ordinance.
Vote and Encourage Others to Vote. Absentee ballots will be available October 3. If you know you will be unable to go to the polls on Nov. 3, be sure to vote absentee. Every vote is important.
Tell your friends, family, colleagues and neighbors to vote YES on Article 7. Thank You for Your Support.
Final Showing before Vote
Tuesday, Oct. 6 @ 7pm
York Public Library
15 Long Sands Rd
Runtime 65 min
If you would like to arrange a private group showing, we would be happy to see if we can work out something with you. This would make a good classroom event or meeting topic for your group or organization. We have the 65 minute version suitable for Adults and Youth and a 45 minute version for younger children. Please call or email Chris Hartwell at 207-363-8588 or firstname.lastname@example.org, if you are interested.
Copyright © 2015 BYOB York, All rights reserved.
From the 9/30/15 York Weekly story written by Deborah McDermott:
YORK – There was, literally, energy to spare at the York Beach fire station Saturday afternoon, as a crowd of more than 50 residents and well-wishers from throughout the region came there to learn about how the department reduced its energy bill from $325 to less than $1.52 in a year.
The York Beach Fire Department dedicated a 28-kilowatt solar power system installed on the roof of the station Saturday.
And in the process, they learned that the building has become a model of efficiency and a harbinger for future town building projects.
The station built in 1917 now has a 28,000-kilowatt solar panel array on its roof, new insulation in the walls and roof, all new light-emitting diode, or LED, lights throughout the building, and a heat pump that is providing cooling and heat to the second floor.
York Beach Fire Chief Dave Bridges explains the electrical equipment, background, for the fire station’s 28-kilowatt solar power system to Bonnie Pothier, left, a representative of Senator Angus King’s office and Rozanna Patane, of the York Energy Steering Committee. The fire department dedicated the system Saturday. Photo by Ralph Morang/RalphMorang.com
“They say timing is everything. Well, the timing was perfect,” Fire Chief Dave Bridges said, because the energy committee approached the chief just as the department was getting ready to renovate the second floor room used as a bingo parlor. “It just all came together. Would I have done it on my own? No. But I commend the committee for approaching us. The summer people commented tremendously on the solar panels.”
York Energy Steering Committee chair Rozanna Patane said the beauty of the collaboration is that “now we can say we can retain the historic function of a 100 year old building while at the same time turning it into a high-performing energy system.”
The savings from the solar array has been “very good, but more importantly we have reduced the amount of carbon dioxide in the atmosphere. The energy saved here is equivalent to taking 50 cars off the road or planting 200 acres of forest,” she said to much applause.
Selectman Torbert Macdonald called himself an “old solar warrior” who was a state planner in Augusta when Jimmy Carter was president and introduced energy efficiency measures. “He was a much maligned enemy of big oil. For 35 years we’ve been listening to the lies of big oil saying what we really care about is cheap energy.” The fire station project should remind everyone that there are those “who care about the planet,” he said
Bridges said the project was such a success, “hopefully this is just the beginning and there will be other departments that will take on the challenge.”
Read the rest of the article at http://www.seacoastonline.com/article/20150929/NEWS/150929038/101123/NEWS
An expert from the Rocky Mountain Institute argues that solar energy may be more glamorous, but efficiency, the old workhorse of green buildings, remains a winner, just not in all cases.
“Efficiency first” is the mantra in green and net-zero buildings; you always do energy efficiency first and then cover the remaining balance of energy needs with renewables such as rooftop solar. This is almost a moral code for green buildings. But in today’s world of rapidly falling costs for renewables, the tipping point between cost-effective efficiency and solar is shifting.
The cost of saving energy through efficiency measures has typically been three to five times lower than any of the renewable sources of energy. Efficiency, as a bundle on a project, typically costs $0.00–0.02 per kWh. Solar-generated electricity has come from $0.20 or more per kWh down to $0.07–0.15 per kWh. And costs are expected to drop a further 25 to 50 percent in the coming few years. We have found that the most-expensive efficiency options—adding another pane of glazing to the windows in a mild climate, daylighting basement spaces, using complicated and sometimes unreliable control systems to harvest the last bit of energy—can’t compete with the new lower cost of solar. Inching incrementally toward deeper efficiency gets more expensive per kWh of energy saved. But is piling on more solar always the best solution?
Read the rest of the article at http://blog.rmi.org/blog_2015_09_01_in_age_of_cheap_solar_does_efficiency_still_matter
Save the Date: September 26th @ 3:00 pm
Please join York’s Energy Steering Committee, York Beach Fire Department, public officials and York residents for a reception and dedication to celebrate the new solar panels at the York Beach Fire Station.
At 18 Railroad Ave., York Beach, Maine.
Just how dumb do they think we are?
Who would believe that destroying the ecosystems on which all life depends, while dis-employing more and more people, is somehow good for the economy? Whose economy?
But that’s exactly the fiction that has been successfully marketed to us: jobs versus the environment.
The next economy that’s now emerging is a restoration economy. It’s founded in restoring the ecosystems whose life-support services nature provides for free, like clean air and water, pollination and healthy soil. It’s also founded in job-creation – putting people to work on the mammoth endeavor of restoring the health of both lands and communities.
It’s simple, really: Taking care of nature means taking care of people – and taking care of people means taking care of nature.
From the series, Bioneers, Revolution from the Heart of Nature, an episode titled The Green-Collar Economy: Jobs, Justice and Prosperity with Van Jones and Majora Carter.
We have tens of thousands of abandoned homes without people and tens of thousands of abandoned people without homes. We have failed bankers advising failed regulators on how to save failed assets. Think about this: we are the only species on this planet without full employment. Brilliant. We have an economy that tells us that . . . → Read More: Getting rich vs. being rich
Last year was the hottest in earth’s recorded history, scientists reported on Friday, underscoring scientific warnings about the risks of runaway emissions and undermining claims by climate-change contrarians that global warming had somehow stopped.
And the trend continues:
In the annals of climatology, 2014 now surpasses 2010 as the warmest year in a . . . → Read More: 2014 Was Hottest Year on Record
The following article from the theforecaster.net recounts the latest work done by Eric Hopkins and others to develop an emergency solar power pilot project.
A group of people including teachers and engineers met at the school library recently to start discussing the possibility of making the school the island’s designated Red Cross emergency shelter, and . . . → Read More: Peaks Island school eyed for emergency solar power array
As a global and long-term problem, climate change presents a huge ethical challenge. Climate change is the consequence of a huge number of small acts, which individually are not intended to cause harm. Moreover, the main victims of climate change – future generations and people in vulnerable countries – are distant in time and space . . . → Read More: The ethics of climate change
Anybody interested in solving, rather than profiting from, the problems of food production and distribution will see that in the long run the safest food supply is a local food supply, not a supply that is dependent on a global economy. Nations and regions within nations must be left free — and should be encouraged . . . → Read More: Real food security
On November 4, York voters will have the opportunity to enact a new ordinance that will require homeowners or buyers to have a septic system inspection done at the time of property sale or transfer. Some real estate brokers have objected to the ordinance, claiming that most buyers already get the septic inspected prior to . . . → Read More: Article 3 to address potentially failing septic systems in York