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Board Of Aldermen - Agenda - 8/13/2019 - P145

By dnadmin on Sun, 11/06/2022 - 22:37
Document Date
Fri, 08/09/2019 - 15:02
Meeting Description
Board Of Aldermen
Document Type
Agenda
Meeting Date
Tue, 08/13/2019 - 00:00
Page Number
145
Image URL
https://nashuameetingsstorage.blob.core.windows.net/nm-docs-pages/boa_a__081320…

APPOINTMENTS BY THE MAYOR

AUGUST 13, 2019

Animal and Dog Park Advisory Committee

June Lemen (New Appointment)
18 Manchester Street
Nashua, NH 03064

Amber Logue (New Appointment)
20 Lock Street
Nashua, NH 03064

Business and Industrial Development Authority

Lydia J. Foley (Reappointment)
2 Bruce Street
Nashua, NH 03064

John E. Tulley (Reappointment)
PO Box 600
Nashua, NH 03061

Bradley Vear (Reappointment)
547 Amherst Street
Nashua, NH 03063

Jason B. Haviland (Reappointment)
29 Todd Road
Nashua, NH 03064

Deborah Novotny (Reappointment)
65 McKenna Drive
Nashua, NH 03062

Kim Reagan (Reappointment)
30 Temple Street, Suite 400
Nashua, NH 03060

David M. Denehy (Reappointment)
56 Sherri Ann Avenue
Nashua, NH 03064

H. John Stabile (Reappointment)
48 Lutheran Drive
Nashua, NH 03063

Carl Andrade (Reappointment)
12 Mountain Laurels Drive, #203
Nashua, NH 03062

Term to Expire:

Term to Expire:

Term to Expire:

Term to Expire:

Term to Expire:

Term to Expire:

Term to Expire:

Term to Expire:

Term to Expire:

Term to Expire:

Term to Expire:

September 10, 2022

September 10, 2022

September 13, 2020

September 13, 2020

September 13, 2020

September 30, 2021

September 30, 2021

May 1, 2022

September 1, 2022

September 13, 2022

September 13, 2022

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Board Of Aldermen - Agenda - 8/13/2019 - P145

Board Of Aldermen - Agenda - 8/13/2019 - P146

By dnadmin on Sun, 11/06/2022 - 22:37
Document Date
Fri, 08/09/2019 - 15:02
Meeting Description
Board Of Aldermen
Document Type
Agenda
Meeting Date
Tue, 08/13/2019 - 00:00
Page Number
146
Image URL
https://nashuameetingsstorage.blob.core.windows.net/nm-docs-pages/boa_a__081320…

City Clerk

Susan Lovering (New Appointment)
23 Bates Drive

Nashua, NH 03064

Conservation Commission

Gloria McCarthy, Alternate (New Appointment)
65 Musket Drive
Nashua, NH 03062

Historic District Commission

Ed Weber (Reappointment)
4 Cabernet Court
Nashua, NH 03062

Robert G. Sampson (Reappointment)
18 Sargent Avenue
Nashua, NH 03064

Mines Falls Park Advisory Committee

Jeff Hannigan (Reappointment)
32 Houde Street
Nashua, NH 03060

Paula G. Lochhead (Reappointment)
4 Westbrook Drive
Nashua, NH 03060

Douglas Gagne (New Appointment)
1 Dunbarton Drive
Nashua, NH 03063

Nashua Arts Commission

John Egan (Reappointment)
7 Beverlee Drive
Nashua, NH 03064

Indefinite Term at the Pleasure of the Mayor
(Term to begin September 17, 2019)

Term to Expire: December 31, 2021

Term to Expire: March 31, 2021

Term to Expire: September 30, 2022

Term to Expire: August 31, 2022

Term to Expire: August 31, 2022

Term to Expire: September 1, 2022

Term to Expire: September 1, 2022

| respectfully request that these appointments be confirmed.

Jim Donchess
Mayor

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Board Of Aldermen - Agenda - 8/13/2019 - P146

Board Of Aldermen - Minutes - 8/6/2019 - P1

By dnadmin on Sun, 11/06/2022 - 22:37
Document Date
Tue, 08/06/2019 - 00:00
Meeting Description
Board Of Aldermen
Document Type
Minutes
Meeting Date
Tue, 08/06/2019 - 00:00
Page Number
1
Image URL
https://nashuameetingsstorage.blob.core.windows.net/nm-docs-pages/boa_m__080620…

A special meeting of the Board of Aldermen was held Tuesday, August 6, 2019, at 7:00 p.m. in the
Aldermanic Chamber.

President Lori Wilshire presided; City Clerk Patricia D. Piecuch recorded.

Prayer was offered by City Clerk Patricia D. Piecuch; Alderman-at-Large David C. Tencza led in the Pledge
to the Flag.

The roll call was taken with 11 members of the Board of Aldermen present; Alderwoman Melizzi-Golja,
Alderman Harriott-Gathright, Alderman Klee and Alderman Schmidt were recorded absent.

President Wilshire recognized those members of the Environment and Energy Committee in attendance
as well as Assistant Fire Chief Walker, Fire Commissioner Paul Garant and Charlie Hall, Conway Ice
Arena Board of Director.

His Honor, Mayor James W. Donchess was also in attendance.
President Wilshire

Thank you Alderman Klee is on vacation; Alderman Melizzi-Golja is on vacation and Alderman Schmidt is not
feeling well and won’t be joining us this evening. Also in attendance from the Environment & Energy Committee,
Doria Brown, Anita Arden Cala, Deb Chisolm, Kerrie Converse, Bob Hayden, Justin Kates, Carrie Lambert, Sarah
Marchant, James Pyle and Sylvie Stewart. Tonight we have a presentation and | will turn it over to the Mayor.

COMMUNICATIONS

From: Lori Wilshire, President, Board of Aldermen
Re: Special Board of Aldermen Meeting

There being no objection, President Wilshire accepted the communication and placed it on file.

PRESENTATION

Solar Energy Presentation

Mayor Donchess

Thank you Madam President. What | will do is give you an overview of how we have gotten to where we are
then Ms. Chisolm and/or Ms. Marchant will tell you a little bit about the procurement process, the RFP we put
out for the energy provider that was selected, that being Revision Energy. Then Revision will give you a
presentation regarding what we hope to do with solar on city buildings as well as the Conway Ice Arena. In
addition to some members of our Energy Committee, of course we have representatives of the Fire Department,
Assistant Chief Walker and Commissioner Grant and Charlie Hall, thank you Charlie for coming, is President of
the Board of the Conway Arena. So it is good that we have everyone here.

So some months ago we determined that we would like to undertake to solarize some of our City Buildings. We
put out an RFP asking for energy providers, solar providers to provide a structure as to how they would
undertake to provide solar for these buildings. We asked them to examine various buildings to determine which
are more amenable in the short term to make solar conversation, erect a solar array. And there is some time
pressure here because there is a tax credit associated with the construction of a solar array which declines or is
reduced at the end of 2019 that Revision will explain more about this. But the tax credit still exists in 2020 but it
is lower than it is if the construction is completed in 2019.

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Board Of Aldermen - Minutes - 8/6/2019 - P1

Board Of Aldermen - Minutes - 8/6/2019 - P2

By dnadmin on Sun, 11/06/2022 - 22:37
Document Date
Tue, 08/06/2019 - 00:00
Meeting Description
Board Of Aldermen
Document Type
Minutes
Meeting Date
Tue, 08/06/2019 - 00:00
Page Number
2
Image URL
https://nashuameetingsstorage.blob.core.windows.net/nm-docs-pages/boa_m__080620…

Special Bd. of Aldermen — 08/06/2019 Page 2

So we put out the RFP, we had four or five responses and as | said, either | think Ms. Chisolm and maybe Ms.
Marchant will fill you in on some of those details but we had a Committee to review the responses and the best
deal for the City was provided by Revision Energy. They were selected, there were a number of people on the
Committee and then they and the City moved forward to examine the buildings where solar might work. It came
down to 3 or 4 possibilities where this would work well right away. One was the garage, the bus garage the
transportation garage out on Riverside Drive. You need both a roof that is amenable to this and also a structure
that can support the weight of the solar array. In addition, the Lake Street Fire Station was one of the other
buildings that was identified as a good candidate for solar. There was some work done on the transportation
office building where Public Works is as well. That was questionable from a structural point of view. Also the
Public Works Building was examined, the Public Works Garage, that could work for solar but we really need at
least 10 and maybe 20 years of life to make the solar investment worthwhile. Since the future of the Public
Works Garage is in doubt, we could be replacing it or expanding it or something else; that was thought to be not
a good fit for a long term project such as this.

Also, because the financial benefits to be gained by any participant in the solar project grow to the extend there
is a larger scale, it seemed like it made sense to talk with the Conway Arena about including us together in
basically the same project under the same terms. Of course their finances would be separate from ours but we
would both gain the benefit as a result of a larger scale project. So we talked with the Board of Directors of
Conway and they were very receptive to the idea because they do use a lot of electricity. Now they have one
concern and | think we can take care of that and that is that the City’s lease with Conway is running out in not
too long, Charlie can give us the exact number of years. They would like to extend the lease under the current
terms for another 20 years. That would be a separate proposal coming to the Board of Aldermen so that they
can participate in this project and make solar work for them over a longer term period.

It seemed to me, of course the Board of Aldermen would need to approve the extension of the lease, but it
seems to me that they have done an extremely good job for the community offering low cost ice to our high
schools teams as well as providing ice for all of our recreational hockey and many other, adults free-skating.
They have done an extremely good job of managing this situation and they have in addition generated profit in
the neighborhood of $650,000.00 which Alderwoman Caron can tell you they have contributed as a member of
the commission, that they have contributed to the non-profits in the area. This year there were about
$50,000.00 or $55,000.00 worth of awards. So the relationship, public/private partnership with Conway has
been, | would say high successful and therefore to me the extension of the lease is something we would do
anyway and if it helps them help us with the solar project that seems like something that we should in my mind
undertake and certainly seriously consider.

In any event, that gives you an overview of the situation | think. Now| would ask either Deb or Sarah or both to
come up and kind of brief us on the procurement, what was done to select, vet and select the various energy
companies which led to the selection of Revision Energy.

Deb Chisolm, Community Development

Hi, Good Evening, | am Deb Chisolm | work in Community Development with Director Marchant. The Mayor did
an excellent job of pretty much covering everything. We did go through a procurement process, of course we
followed all the rules and regulations of the Purchasing Department downstairs. But we were lucky to get
proposals from 4 different solar companies. It gave us a lot of options and a lot of a learning curve for myself, |
am typically, my hat is usually Waterways Manager but for tonight | am Solar Person. Sarah and myself and
Bob Hayden from Standard Power were the review committee. So we reviewed all of the proposals that came
in. We got 4 proposals in; we took 2 and moved them further, asked specific questions about specific properties
and specific pricing. Thankfully, again Bob Hayden was on our review committee because Bob is standard

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Board Of Aldermen - Minutes - 8/6/2019 - P2

Board Of Aldermen - Minutes - 8/6/2019 - P3

By dnadmin on Sun, 11/06/2022 - 22:37
Document Date
Tue, 08/06/2019 - 00:00
Meeting Description
Board Of Aldermen
Document Type
Minutes
Meeting Date
Tue, 08/06/2019 - 00:00
Page Number
3
Image URL
https://nashuameetingsstorage.blob.core.windows.net/nm-docs-pages/boa_m__080620…

Special Bd. of Aldermen — 08/06/2019 Page 3

power. He has got an excellent background in solar and renewable energy so he was really able to dive into the
pricing that was being offered by all the competitors. As is turned out Revision Energy was for us the preferred
vendor. So far, | mean the selection was made several weeks ago, a couple of months ago and | know
Revision is really chomping at the bit to get started on this. We have been working very closely with them. It
has been a bit of a challenge to find the right properties.

As the Mayor indicated there are many different criteria that will Keep properties in the portfolio or kick them out
and one of the things is the status of the roof. Not every building that the municipality owns has a new roof so
that has been a very huge challenge to figure that out. Thankfully we were able to have Conway come to the
rescue. They have an expansive roof that is in really great shape. So again Dan an James will give you way
more of the details on how this is going to play out with the power purchase agreement that we need to get into
with Revision Energy similar to what Conway Arena will be also signing up for as well. So if anyone has any
questions specifically for me, the details are going to come from Revision Energy and their presentation. But
from a purchasing standpoint, if anyone has any questions | am happy to answer.

Mayor Donchess

Thank you, now | would just add before we bring up Revision that of course we have a couple of major goals
here that have been articulated by the Board of Aldermen, by the Energy Committee and by the City. First, we
are trying to reduce our carbon footprint and we have established some goals with respect to that. This will help
us work towards that goal. Revision will tell you if we sign this and we can get this done by the end of the year
we may be able to add a couple of add-on buildings that are not good enough to be standalone but could
possibly be added to the project. City Hall being one of them and possibly one or two others.

And of course the other goal is to save the City money which we can do and you will see the details of the
financials when they present the details regarding the cash flow and the rest of it. So thank you to Deb and
everybody who worked so hard on coming up with this. One more thing, we really need to give Conway a clear
sense that this lease extension would be acceptable so that they can undertake this with confidence and | think
we need to take some steps we hope by the end of the month, end of August. But we can talk more about the
timing and the details later on.

President Wilshire

| think that Alderman Laws had some questions for Deb before we call Revision.

Alderman Laws

No | can wait until the end.

Mayor Donchess

No go ahead, | mean why not?

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Board Of Aldermen - Minutes - 8/6/2019 - P3

Board Of Aldermen - Minutes - 8/6/2019 - P4

By dnadmin on Sun, 11/06/2022 - 22:37
Document Date
Tue, 08/06/2019 - 00:00
Meeting Description
Board Of Aldermen
Document Type
Minutes
Meeting Date
Tue, 08/06/2019 - 00:00
Page Number
4
Image URL
https://nashuameetingsstorage.blob.core.windows.net/nm-docs-pages/boa_m__080620…

Special Bd. of Aldermen — 08/06/2019 Page 4

Alderman Laws

| remember vaguely someone once said there is 1 million square feet of roofage in our public school system and
| am just wondering why that hasn’t been a consideration. | feel like those are, some of them are relatively
recent structures that could support it.

President Wilshire
Alderman Dowd did you want to take a shot at that?
Alderman Dowd

Yeah I'll take a good shot at that. Most of the schools, even though they have flat roofs, do not have the
structure to hold the weight of solar panels. We are looking, we will have if we build a new school down in the
south part of Nashua we will have solar panels on the roof. But as far as the other schools, they weren’t built to
hold that additional weight. So the only other building that comes to mind that could support the weight is the
Police Department. That building was built so that they could one or two additional floors, so | would have to
presume that it is strong enough to hold solar panels assuming we are not going to add a couple of floors to that
building. But no we’ve looked into the other schools, if there is a roof that will support it, we will look into it. But
most of them won't.

Alderman Laws

Thank you.

Mayor Donchess

Now | would add to that that when we hire the new energy manager which you have authorized, there are
school projects that certainly can be undertaken. For example the one that we have talked about with the
School Department and which could yield, there would be some costs associated with it but which would yield
significant benefits is the conversion of each of the high schools to LED. Now we have seen some rough
estimates that might involve and an investment of $1 million dollar plus per school but could save $125,000.00
plus per year after that investment is made.

But as we sort of began to talk about that project or that idea the energy manager would be able to work in detail
to design the project that would work for the school, that would maximize the energy savings while at the same
time accommodating the needs of each group at the schools. Enough light for the teachers, the students and it
needs to be a very detailed examination of each building to determine exactly which lights should be converted
and what is the best project and to define the project and then put it out to bid or work with a private provider to
undertake a project which we define. So | think that’s when we get the energy manager on board what we will
try to work on with the School Department.

Alderman O’Brien

Thank you Madam Chair, President. | would like to ask Ms. Chisolm a question, perfect for you because you
are in charge of the dam project and everything. How does this effect the State as far as the net metering, kind

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Board Of Aldermen - Minutes - 8/6/2019 - P4

Board Of Aldermen - Minutes - 8/6/2019 - P5

By dnadmin on Sun, 11/06/2022 - 22:37
Document Date
Tue, 08/06/2019 - 00:00
Meeting Description
Board Of Aldermen
Document Type
Minutes
Meeting Date
Tue, 08/06/2019 - 00:00
Page Number
5
Image URL
https://nashuameetingsstorage.blob.core.windows.net/nm-docs-pages/boa_m__080620…

Special Bd. of Aldermen — 08/06/2019 Page 5

of concerned before we go down this road, which is | think is definitely worthwhile. But | Know there’s in total, we
have the dams that are generating and we are getting some net metering with that. And put these other projects
and pile that on, is there any jeopardy or anything are we going to top off that we are generating too much?

Ms. Chisolm

No that won’t be the case. | would put a pitch in for people supporting the over-ride of the veto of HB 365 which
would expand net metering to 5 megawatts for those who might be listening, State Reps.

Alderman O’Brien

| think you are preaching to the choir here.

Ms. Chisolm

| will say that is something that has been supported by all of the State Reps in Nashua, it is preaching to the
choir but it is choir then preaching to their friends who might not have an understanding of what net metering
really entails. But no, adding the solar project on is not going to put us in peril of topping off and like | said, Dan
and James have the details on exactly how much power will be generated and how that net metering will
actually work for the solar projects themselves.

Alderman O’Brien

Thank you.

President Wilshire

Ok anyone else? Ok.

Dan Weeks, ReVision Director of Market Development Good evening and thank you very much for the
opportunity to present the solar proposal for the City of Nashua. My name is Dan Weeks, a resident of Nashua
joined by James Hasselbeck, Director of Operations for Revision Energy. | serve as Director of Market
Development. We clearly appreciate the due diligence that Deb and Sarah, Bob and others on behalf of the
City have invested over a few months now. It has been a joy to work with them and we are excited to be here
today to present what we think is a very beneficial and positive initial phase of solar projects for the City with
plenty of potential in the future should the City decide.

| wanted to start with a quick introduction of Revision Energy. We are, James and | represent 260 co-owners of
the company. We are a 100% employee owned company. | have been installing solar in Northern New England
since 2003 with our co-founder Bill Behrens beginning actually in the 1980’s. There has been obviously a lot of
development in that time. We take a lot of pride in being an employee owned company; meaning the guys up
on the roof and gals who also install with us, do have an equal stake in the company and are deeply invested in
doing it right. We are also a Certified B Corporation, a benefit corporation, which is a legal commitment we
make as acompany to operating in a Triple Bottom Line manner. That is profits are part of what we do as a
private business, but people and planet come first.

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Board Of Aldermen - Minutes - 8/6/2019 - P5

Board Of Aldermen - Minutes - 8/6/2019 - P6

By dnadmin on Sun, 11/06/2022 - 22:37
Document Date
Tue, 08/06/2019 - 00:00
Meeting Description
Board Of Aldermen
Document Type
Minutes
Meeting Date
Tue, 08/06/2019 - 00:00
Page Number
6
Image URL
https://nashuameetingsstorage.blob.core.windows.net/nm-docs-pages/boa_m__080620…

Special Bd. of Aldermen — 08/06/2019 Page 6

We have so far constructed over 8,000 solar energy systems and complimentary technologies as well to enable
buildings, municipalities, private homes to be non-reliant on fossil fuels and energy, self-sufficient instead. Our
Mission is to help this region, New Hampshire is where we do about half of our business. We began up in
Maine, we do also work in Massachusetts as of the last 2 years. Our Mission is to help our communities make
the transition to self-reliance, to clean renewable energy and to protect the things we value; clean air, clean
water, clean land in the process. We will focus naturally on solar at this point but any chance we get to educate
folks around the stead of complementary technologies that do in fact make it possible for individuals but also
communities to lessen their reliance on imported energy through some of these complimentary technologies.

A couple of the non-profits and municipalities we have been honored to work with and with and | would point out
just across town from here, the Nashua Soup Kitchen and Shelter was one of our first local projects two years
ago. | am very proud to be helping them save money through this purchase agreement which | will describe in a
little more detail ina moment. On the commercial side we also work with a number of good businesses in New
Hampshire and in the region. We can go into detail if you’d like on other municipal projects that we’ve done but
just a couple of examples here in New Hampshire which are similar in scale or type of technology to what we
are proposing for Nashua. Again we are happy to provide details and references if you'd like.

Finally we were proud two weeks ago to be named again for the third consecutive year the Number One Solar
Installer in New England and we have received some other honors. We are part of a growing community with
close to 1,000 solar jobs in the State. Many good contractors that we consider partners and we do expect in the
coming years to see many more added as well.

| am going to give a quick overview of how we settled on the two recommended sites for 2019. Ask James who
runs our construction end of the business, actually building the systems to provide a little bit more detail and
answer technical questions you may have about the types of installations and then I'll return to the all-important
financials for this proposal.

As you heard from the Mayor and from Deb there are a lot of City rooftops that are potential candidates for solar
down the road. | am not zooming in all of them here by any means but three main areas that we focused on
with a starting list at the outset of the PPA several months ago of 24 city properties clustered in downtown
Nashua, out at the Waste Water Treatment Plan and at the DPW and Transit Garages. We did do careful
assessments of 10 of the initial 24 after doing some initial assessments of all 24. The two highlighted are the
ones that we are recommending at this point. But just for your interest to give a sense, at the top the first five
are what we defined as the maximum value opportunities.

These are projects with fairly substantial scale, economy of scale as the Mayor mentioned do certainly matter in
terms of the economics of these projects. But through an extensive vetting process over several months, we did
narrow down to these two projects which again is not to say that we wouldn’t love to see Nashua with us or
other solar companies install on many other roofs. But in many cases roof age was a concern as much as we
can put panels on a 15 and 20 year old roof and sometimes if the owner is preparing through some resealing of
seams that does make sense, but generally we don’t recommend it on roofs of that age. We would rather wait
until they are replaced, so that was the primary reason why these projects, the ones not highlighted were
excluded from the portfolio, but we can provide more detail if you wish on others.

Needless to say there is a lot of opportunity and should the City determine after a first wave that it makes sense
to add, we certainly would love to see the City do so with us or with other contractors. Let me turn over to
James to provide a little more detail on the two highlighted projects. We can also speak to Conway if you wish
although we felt it appropriate to focus on the two city-owned buildings for tonight.

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Board Of Aldermen - Minutes - 8/6/2019 - P6

Board Of Aldermen - Minutes - 8/6/2019 - P7

By dnadmin on Sun, 11/06/2022 - 22:37
Document Date
Tue, 08/06/2019 - 00:00
Meeting Description
Board Of Aldermen
Document Type
Minutes
Meeting Date
Tue, 08/06/2019 - 00:00
Page Number
7
Image URL
https://nashuameetingsstorage.blob.core.windows.net/nm-docs-pages/boa_m__080620…

Special Bd. of Aldermen — 08/06/2019 Page 7

James Hasselbeck Thanks for that overview Dan and thank you everybody for the time this evening. So as Dan
mentioned, my role is to oversee our design, estimating, construction and operations and maintenance arms of
the company. | am a construction guy so | am happy to get into the weeds particularly of any concerns the
Aldermen may have on any of these projects and hopefully address them. So the first building we wanted to
focus on is a really great opportunity here at the Transit Garage. So what we see here is obviously an
overhead image, each of those little blue rectangles represents one individual solar panel. Each solar panel is
roughly 3 % feet wide by about 5 % feet tall. So we are right around 19 % square feet. On this type of roof, a
flat, EPDM or rubber sealed roof, we do not penetrate that roof surface and that is really important. My team is
a bunch of engineers, plumbers and electricians. We are very, very interested in building solar energy systems
and not at all interested in owning roofing warranties.

So we work, but obviously as you can imagine a key part of our business, so we work extremely closely with all
the major roofing manufacturers prior to our installation. If you in the procurement or construction world, you
may be familiar with something called a submittal process. So we do something fairly similar; so prior to any
installations we get ahold of the existing warranty holder on the roof, whether it is the roofing manufacture or the
roofing contractor. We basically submit to them the details of the racking manufacturer that we are going to use.
All of the big roofing manufacturers have a very specific process in place where they basically review and then
confirm that the products that we are using will not void the warranty. That is a crucial piece of us; sometimes
there are inspections involved and there are certainly a lot of back and forth that we undertake. But the key
takeaway for this group | think is that the work we are doing here will not be putting holes in these roofs and we
will not be impacting any existing roofing warranties. There is a documentation stack about this thick that we
provide at the end of the project.

So how this works, we are not putting holes in the roof, so what we are doing is we are doing a lot of smart
engineering and we use what is called a ballasting system. So basically, we are using, wait | don’t know what
photos you have there, yeah so you can see in some other similar projects we have Contemporary Automotive
over in Milford, Tupelo Music Hall, and the Wirebelt just up in Londonderry. But basically we have determined
that by strategically placing a very specific quantity of concrete ballast blocks in a very specific weight structure
that that provides enough downward pressure to hold the solar panels secure. It adds anywhere between 4 to 7
pounds per square foot of dead load to that building; the differences is based on the wind load and the building
factors. Part of our due diligence as Dan alluded to, we also do a structural engineering review of each building.
So we go in with our professional engineer, take a look at the building structure and confirm with 100% certainty
that everything that we are doing is structurally sound. | guess that’s kind of it.

Mr. Weeks And | would just point out that the production data you see the array, the capacity, that’s the DC
Direct Current Capacity of 103.9 kilowatts, 297 panels and then really the important number there is the power
output 106,500 kilowatt hours per year. A quick word on how we come up with those projections?

Mr. Hasselbeck Sure so you can see the graph in the top right corner and it is difficult to see the things on the
bottom but on the left hand access, vertical access, that’s the production quality on a monthly basis and our east
to west access is months starting in January and ending in December. So as you can see, we see very low
production in December, January and February because we are basically assuming that those arrays are going
to be covered in snow and it not worthwhile for anybody to get out there and shovel these rooftops. So basically
we just model out that production and how we get to that modelling is using some industry standards software;
it’s not our own guessing. It’s a program called Helioscope which is vetted by both the National Renewable
Energy Laboratory and a lot of financial institutions that invest in these projects. We are able to provide really
accurate production data by utilizing existing weather data from this area. | think our ticket is in the Nashua
Airport for this specific site; so very detailed, historical weather data over 30 years in town. Then we look ok
here’s our system, here’s the pitch of the panels, the orientation of the building to provide a really accurate idea
of what we can expect for power generation.

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Board Of Aldermen - Minutes - 8/6/2019 - P7

Board Of Aldermen - Minutes - 8/6/2019 - P8

By dnadmin on Sun, 11/06/2022 - 22:37
Document Date
Tue, 08/06/2019 - 00:00
Meeting Description
Board Of Aldermen
Document Type
Minutes
Meeting Date
Tue, 08/06/2019 - 00:00
Page Number
8
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Special Bd. of Aldermen — 08/06/2019 Page 8

The other thing that we consider as far as our design goes is long term longevity and usability of that building so
you will see on the Transit Garage, it is kind of a funny shaped array. Well we want to make sure that this
system is going to be operational for 30 plus years. In that time frame all of those little boxes there, those are
HVAC units, air conditioners, compressors, they are going to need to be replaced, they are going to need to be
maintained, they are going to need to be accessed. So we want to make sure in our designs to account for that
so future City maintenance, totally outside of the project, outside of the solar project is not negatively impacted.
So that is the reasoning for the kind of broken up array there.

Mr. Weeks And just for your interest before moving to the next building, we do have on this overview slide the
percent offset of these facilities, you see load offset the right most column and for that Public Works Garage that
projected output, power output amounts to about 70% of the power consumption. | can speak in more detail to
Alderman O’Brien’s question about net metering. But in brief, that is a fairly ideal arrangement where all of the
power will be used behind the meter sort to speak on an annual basis, with a little bit of surplus power generated
during the peak summer months, less than what is consumed obviously during the lowest production winter
months. But you will be getting the equivalent of full value for nearly 100% of the power because as a “small
customer generator’ a system below 100 kilowatts AC, that’s the AC inverter rating, | can differentiate a little
more detail if you’d like. But as a defined small customer generator, the net metering statute provides for the
ability to use that power anytime within a monthly billing cycle; meaning a peak summer day like today where
you overproduce, will provide power that you use next week when it is raining within the same billing cycle or at
night when the HVAC and the lights may be on. So we can elaborate in more detail if you would like but being
at close to but below 100% is really an ideal place to be in terms of the value of solar electricity and both of
these facilities are 70 and 81% a nice place to be. James, the Fire Station?

Mr. Hasselbeck Sure so this was the second project that we identified that would provide the greatest economic
and environmental value to the City on the Lake Street Fire Station. So it is a beautiful building and here we are
looking at a more conventional pitched roof. So here again it is a metal standing seam roof, so if you are
familiar they are metal plates with these kinds of little seams that are visible. Those are our favorite kind of roofs
to work on in New Hampshire for two reasons. One, they last forever so there’s no issues about roof longevity
and two, we are also not penetrating these metal roofs. We work with a couple different manufacturers who
design and supply these types of clamps and they clamp directly onto the seams themselves. So instead of
penetrating through the roof membrane and into the structural surface of the building, we are clamping on to
those seams to give us the structural integrity we need to support the solar array.

Here, because we are not relying on concrete blocks, the dead load is significantly less. So these systems we
are only adding anywhere between 2 to 3 pounds per square foot. Even so, we still run through the same type
of professional engineering analysis to confirm the structural suitability of the building. So this is a very straight
forward install again, the big concerns that we always get is “what is going on with my roof warranty”. We are
going to be able to maintain that, we are going to be able to utilize a variety of different roof surfaces; you see
we are not putting solar panels on the northern side of things focusing on the most productive sections of the
roof and it is fairly straight forward from our perspective, these are very simple installations.

Mr. Weeks And | would note again that 126.8 KW that is the DC the panel rating. That is each of the 409
panels times their wattage of 310 watts. That is again, the DC rating, the AC rating, we have capped
strategically at 100 kilowatts to retain that small customer generator classification which increases the value of
every kilowatt hour that we export.

Mr. Hasselbeck | think that that’s a really excellent point. Solar frankly is quite complicated. We are trying to
balance economics, we are trying to balance environmental goals and we are trying to balance often rapidly
changing State and Federal Policy.

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