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A Textbook Example: Why American Schools Must Go Green

Schools across the country – including many in California and Colorado – are utilizing their rooftops and PPAs to go green in an affordable and socially responsible way.

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16 Reader Comments
Comment
1 of 16
September 8, 2010
Thank you for this article. The other technology that also needs to be mentioned here is solar air heating, as it addresses one of the largest usages of energy at schools in heating climates. School boards across the country have benefited by installing SolarWall® air heating systems, in terms of reduced heating load and automatic GHG displacement (as reducing heating is always a direct source reduction of CO2). The benefits for schools are three-fold, in that; (a) The reduction of their operating costs frees up money that can be used for purposes that actually benefit the students; (b) The solar systems act as a teaching tool for students who want to embrace the energy sources of the future; and (c) SolarWall systems improve indoor air quality, as they heat ventilation air (And ASHRAE states that each students requires a minimum of 15 cfm). SolarWall air heating can also be combined with PV to create a hybrid system generating both heat and electricity, and projects using this new technology are underway across the country.

Victoria Hollick
VP Operations, Conserval Engineering
Comment
2 of 16
September 8, 2010
I think this is a good article. My district has a school of about 550 students and its utility bill is about $8,000 per month for lights, air conditioning and computers. The school is located where there is sunshine almost all of the year. I think that it would benefit by PV modules because power is used most between 8am and 3pm.
Comment
3 of 16
September 9, 2010
Saving energy starts with the method of teaching. Why are we using 10,000 teachers to do the same basic job. The internet needs to be used to let the "cream of the crop" teachers teach each subject.
For example: Let the education system decide who the best 10 3rd grade teachers in the United States are. They can be broadcast over the internet classrooms. Why are we paying 5,000 teachers to basically do the same thing?
Corporations are discovering "net meetings" as a result of having to cut back on air travel expenditures. Schools should be doing the same.
Then cut into the utility bills.
Comment
4 of 16
September 10, 2010
Whilst solar power/heating and wind turbines are an excellent approach to the issue, they will provide only a partial solution.
I would suggest that, for similar sites, you consider an option which includes the installation of a biomass gasification CHP plant running internal combustion generator sets. If you also consider adding an AD plant to handle the school's (and community) food and other putrescible waste and generating biogas (for use in gensets, or as CNG for the school's transport....), you'd end up with an integrated RE "campus".
These would provide power, heat (and chilling, if appropriate)at much higher efficiencies than the solar/wind installations but, more importantly, continuous generation with the option to supply the surplus to the regional grid or, if one is available, the local distribition grid - usually at premium tariffs.
Given that schools and other public sector bodies tend to shy away from "commercial" undertakings, this may best be implemented via the creation of an ESCo with a private developer (a la PPP), in which the school/community has a carried equity position. Result - the school/community gets low-cost/free energy, and an income stream from the dividends arising from the ESCo profits. It also addresses Victoria's point re "teaching tool", as it covers both the environmental and business elements of renewable energy delivery.
This is something on which my company both advises and structures - happy to discuss further with anyone who may be interested.
Chris Moore
Chief Executive, W2 Green Energy Limited
chris.moore@w2greenenergy.com
Comment
5 of 16
September 10, 2010
Great Article;
As shown in the picture, a great many schools also have broad, flat rooftops these days, which leaves them with ideal Solar Exposure, unhampered by trees or neighboring buildings on at least some significant part of their roof. Not unlike Chris Moore's biomass and CHP suggestion, this rooftop represents a great quantity of wasted Solar energy, and for the Hotter Climates, putting the School's roof in shade could have beneficial effects on the A/C loads as well.

As far as internet teaching, I don't think that Electric 38 is remembering how much of a Teacher's work is individual contact and the group dynamic of the class as a whole. It's not things you can get from watching a TV, while there are some very useful ways to use Computers and Video to enhance education, and to cut energy costs.

Another financing tool to consider would be the CDBG, or Community Development Block Grant, and don't forget to consider another Solar Option might be to create a rooftop Vegetable Garden for teaching students about Food, Agriculture and Nutrition, and for providing healthy snacks to the school.

Bob Fiske
Comment
6 of 16
September 10, 2010
To electric38:
In answer to your question why we can't take the efforts of 10 people to instruct the nation over the Internet is impossible, simply because education is not a one-way street. Students have questions, which need to be answered specifically, accurately, and at the moment they are brought up, ie, in context with a lesson. It's ridiculous to believe that one or ten instructors can address 100's of thousands of students needs.

Education does not simply address any given lesson. Cognition takes processing, and that processing requires attention.

Let's put you in the classroom, or online. The class is 7th grade chemistry. Today's lesson is electron energy levels. You are told there are p-rings and s-rings. You don't understand it completely enough to be able to integrate it into what you already know. Tell me; how, as one in 10,000 attending online, are you going to have your question answered? Are you going to pause 10,000 students for a single question?
Comment
7 of 16
September 10, 2010
The San Diego County Office of Education has partnered with the California Center for Sustainable Energy to produce an Energy Planning Guide for Schools that is a resource for school districts to understand how they can approach reducing energy consumption through energy efficiency and renewable energy projects. It's online and free. Go to http://energycenter.org/index.php/energy-advisory-services/sdcoe-energy-planning-guide.
Comment
8 of 16
September 10, 2010
Curiously omitted was any mention of actual payback periods. Nor was the level of the taxpayer subsidy for such endeavors mentioned. Actual payback periods appear to be in the dozens of years, well beyond the norms of any rationale investment.

Clearly, just another attempt by developers to feed at the government pig trough.

A vastly better approach is to increase the efficiency of energy use at the schools.
Comment
9 of 16
September 10, 2010
@Keller

Energy efficiency will only take a school so far. While EE should always be considered ahead of Renewable Energy, RE can and IS a viable economic investment IF the site energy use is appropriate for the technology and utility billing structure.

I personally have consulted on projects with avoided cost opportunities above $0.35/kWh. Solar projects can work without the incentives, however, the industry isn't quite savvy enough to hone in on those projects and frequently the folks deciding on the project aren't knowledgeable enough to recognize a bad deal when it's sold to them by developers driven by project size.

Renewable energy projects boil down to two variables:
1. Levelized cost of energy for the technology ($/kWh over the useful life of the product)
2. Annual value of the avoided utility costs ($/kWh adjusted for utility rate escalation)

The report I put together for the San Diego County Office of Education with colleagues and co-workers here in San Diego describes these variables in more detail, directly pertaining to schools:

www.energycenter.org/sdcoe
Comment
10 of 16
September 10, 2010
For larger scale projects like schools and other institutions, the more efficient solar venues may need to be considered first. The technology for solar water heating in vastly more efficient that most forms of electric production. Using CVT collectors, the watts produced is three to four times more efficient than PV, even or especially, in cold weather. If the schools intend to function more then five to ten years into the future, and not even considering fuel price increases, the water heating from current sunshine can save the typical school 80 to 90% in water heating costs, no mater what that hot water is used for, and there are many uses. The education, real application and time, is certainly among them.
Comment
11 of 16
September 12, 2010
@keller It is an investment. And the best one for the next 5 years. Try getting a 10% return on your money from a bank. How you ask? Check out my figures under "Cost of the PV System": http://www.mpsaz.org/rmhs/staff/hljohnson/solar_information/
Here is the investment that a school system in AZ made:
http://www.azcentral.com/community/mesa/articles/2010/06/10/20100610mesa-schools-solar-layoffs.html#comments
Comment
12 of 16
September 12, 2010
Good article. I prefer policies and programs which underwrite large installations at federal, state, and municipal sites (e.g., public schools and buildings, hospitals, etc.), as opposed to subsidizing PV for individual homeowners and big-box retailers. Subsidies for homeowners benefit a privileged few; subsidies for a few large corporations benefit entities which can be gone with shifting economic tides. I doubt still more subsidies to underwrite the further "malling" of America constitutes judicious use of scarce taxpayer/ratepayer monies. Municipalities on the other hand represent ALL the voters, and, in a manner of speaking, aren't going anywhere. Their fixed locations exactly correspond to the long payback/payoff times which are the hallmark of both PV and geothermal.

Geothermal heat pumps seem partiularly attractive for public schools, as these buildings are typically surrounded by acres of open space(including ball fields) which can easily be developed (then restored) to provide substantial heating and cooling. Hundredes of US schools have already gone this route. Good handout available at NREL.
Comment
13 of 16
September 13, 2010
We applaud the efforts of Clinton Montgomery and the Northwest Regional School District #7 in Winsted, CT.

Michael Laine's article hits on a key fundamental in the context of changing our energy model that is not sustainable strategically or economically. Let's educate the 20% of our population that will educate the other 80% on the value and benefits of clean, renewable energy generation.

Especially for our educational system that is getting close to a financial breaking point. Clean energy jobs today and tomorrow (that can't be exported)as a result of schools getting control of their energy costs is a win - win - win.

Let's deploy our resources (financial incentives)in an effective an efficient manner to create the next generations' energy and environmental stewards while establishing our country as a worldwide leader in the renewable energy field before we won't be able to catch up!
Comment
14 of 16
September 14, 2010
I must echo Keller's comment about efficiency (and conservation) being the better approach. jfortune's subsequent comment, "Energy efficiency will only take a school so far" is certainly true--- as far as they could wish to go. If they really want to save energy, they should get consultants in to evaluate the building's efficiency. Most older schools are energy waste nightmares.

Given that the cheapest energy (subsidies aside) is the negawatt, it's sad how much of our energy work comes down to following this or that current subsidy or incentive to support the favored-technology-du-jour. Granted, schools that take advantage of (here) today's (gone tomorrow) PV subsidies and PPA arrangements can continue to increase their efficiency and thereby effectively increase the proportion of their electricity needs the systems cover, but once the system is installed, how many have an incentive to do that? Same for homeowners: "I've got my PV system, therefore I'm 'green.'" Far from it.

Efficiency and conservation first. Earn the PV. If schools insist on getting into RE, solar heating is the more efficient choice (thanks phil-manke-79191 and Victoria at Conserval). Help the industry create subsidies for heating. We'll get to PV, but let's be logical about the pathway we choose to get there.
Comment
15 of 16
September 17, 2010
@electric38

there is at least one fatal flaw in your argument which happens all too often. Just because 2+2=4, does not mean the world is flat.

Confused?
I don't know what school district you are in, but I am not aware of any 3rd grade teacher that steps on a plane every morning. In the same token, do you have any idea how much it costs taxpayers to fund NASA to launch 1 rocket, why not make reference to that cost? We have sent teachers into space, but not to teach 3rd grade.

I am tired of paying taxes for your kids to get the benefits and still have the U.S. ranked less than 10th worldwide. At least invest in the school, we keep investing more in the kids and all they know how to do is download i-phone apps and youtube videos.
Comment
16 of 16
September 17, 2010
While I agree with some previous posters that efficiency and conservation must always be considered and implemented ahead of renewable energy investments, there is one aspect of schools that lends itself to renewables. Namely, that many schools are unoccupied (or sparsely occupied) for several months of the year. These summer months will generate a return to a solar power investment but relatively little to an efficiency investment.
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Michael Laine

View Michael Laine's Profile
About: Before joining MP2 Capital as a Principal, Michael worked in the derivatives documentation department at Barclays Global Investors, and served as the senior new... more »

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