GOVERNMENT OF THE DISTRICT OF COLUMBIA DEPARTMENT OF GENERAL SERVICES

* * * * * * DGS 1111 Dl"""IMIHI Ur rilN••,u ..MVIO U

November 17, 2017

Michael Weil

Urban Planner

National Capital Planning Commission 401 9th Street NW Washington, DC 20004

Subject: Takoma Education Campus

7010 Piney Brand Road, NW

Washington, DC 20012

Dear Mr. Weil,

The District Department ofGeneral Services, Sustainability and Energy Management Division

is pleased to present this submission for installing a photovoltaic solar system at the Takoma

Education Campus located at 7010 Piney Brand Road NW, Washington, DC 20012 for review

by your commission.

If you have any question or require further information, please contact John Corliss of DC Solar at 781 238-8880 ext. 1107

Zach Dobelbower

Program Manager Sustainability and Energy Management Division

District of Columbia Department of General Services

2000 14th St. NW, 8th Floor Washington DC 20009 I Telephone (202) 727.2800 I Fax (202) 727-7283

SUBMITTED BY

DC Department of General Services (DGS)

APPLICANT’S REQUEST

Preliminary and final approval of site development plans

PROJECT

New Solar Photovoltaic (PV) Arrays

Takoma Education Campus

7010 Piney Brand Road, NW

Washington, DC 20012

PROPOSED ACTION

Approve as requested

PROJECT SUMMARY

DC DGS has created an exciting project for the city at a scale that implements onsite local solar power

generation within each Ward. The projects will be owned, operated and maintained under a 20 year

power purchase agreement.

The Department has awarded a local team comprised of DC-based and regional firms that have a track

record demonstrating the capacity, resources, equipment and local workforce to design, permit, finance

and build solar projects. DC Solar provides a CBE-led entity that has designed and installed more than a

total of 200 solar power systems with a capacity of more than 100 MW, and has financed, owns and

operates plants providing more than 1.5 MW of solar power.

The DC Department of General Services is requesting preliminary and final approval for the construction

of a solar photovoltaic panel array including the installation of ancillary transmission equipment

(equipment cabinets and transmission lines) on the Takoma Education Campus. The solar PV array will

be located on the existing rooftop. The rooftop solar array will generate approximately 102 megawatt

hours (MWh) of electricity for facility use annually, reducing annual grid consumption approximately

13% and off-setting 70 metric tons of carbon dioxide per year. This rooftop project site will not have line

of sight visibility to the public. The project will not require tree removal.

KEY BENEFITS

The project is consistent with the existing Takoma Education Campus Long-Range Plan, and does

not conflict with the master plan.

The project delivers clean onsite power generation, provides electricity directly to the police

station and has the ability to send unused power back to the grid.

The project promotes and achieves energy conservation, and contributes to the Mayor’s green

energy and education goals.

PROJECT DESCRIPTION

Site

The Takoma Education Campus is located in Washington, DC at 7010 Piney Brand Road, NW. The solar

array will be installed on the existing facility roof without physical alteration to the building structure as

shown in Figure 1.

Figure 1: Vicinity Map Showing the Takoma Education Campus and Location of Project Site

Jre 126: Takoma Education campus Usable Area

The Proposed Site Profile

The Takoma Education Campus site is one of six alternate DC DGS sites that has been awarded to DC

Solar (A Joint Venture formed to submit a proposal to the District of Columbia Department of General

Services for the On-Site Solar Power Purchasing Agreement at Various Municipal Facilities, DCAM-14-CS-

0123) utilizing a PPA contract to design, install, and maintain solar panel arrays. The visual impact of the

solar panels will be largely mitigated by their height above street level, low installation height, and 4 to 8

foot set back location on the rooftop. The solar array at the Takoma Education Campus will cover an

area of approximately 4,907 square feet. The DC Solar array represents about 11% of the existing roof

area. The installed panels will be approximately 10.4 inches above the roof surface at their highest edge.

Existing roof drains will be unobstructed. The array will include approximately 233 solar PV panels as

shown in Figures 2 through 7.

Figure 2: Takoma Education Campus Site Plan

Figure 3: Takoma Education Campus Current View

Figure 4: Takoma Education Campus Solar Array Plan

Figure 5: Takoma Education Campus PV System Ground View

Electrical Components

The key electrical components include the PV inverters and utility panels to house control and

monitoring equipment. The solar inverters and utility panel will be located on the roof. DC disconnects

located at the inverters.

Figure 6: Multiple Renderings of Solar Array Elevation & PanelClaw Ballasted Roof Mounts

Attachments

1a., 1b., 1c. PV Panel, PV Mount, and Inverter Cut Sheets

2. PV Accumulation Panel Cut Sheet (Typical View)

3. Site Drawing PV1 with Dimensioned Set Backs

.hhi-green.com/ solar/ en

I Hyundai Heavy Industries w as founded in 1972 and is a Fortune 500 company. The company employs more t han 48,000 people, and has a g lobal leading 7 bus iness divisions with sales of 40.9 Billion USD in 2015. As one of our core businesses of the company, Hyundai Heavy Indust ries is

committed t o develop and invest heavily in the fie ld of renewable energy. Hyundai Solar is t he largest and the longest standing PV cell and m odule manufacturer in South Korea. We have 800 MW of module production

capacity and provide high-quality so lar PV products to more than 3,000 customers worldw ide. We strive to achieve one of the most efficient PV

modules by establishing an R&D laboratory and investing mo re than 20 Million USO o n innovat ive techno logies.

Poly-crystalline Type

RI-Series H iS- M31 ORI I H iS-M 31 SRI I HiS-M320RI I HiS-M32SRI

Mono-crystalline Type HiS-S33SRI I Hi S-S340RI I HiS-S34SRI I Hi S-S3SORI I Hi S-S3SSRI I HiS-S360RI

Mechanical Ch~rac erlsti

High uc,llty

998 mm (39.29")(W) x 1,960 mm (77. l ?")(L) x 40 mm (1.S?'?(H)

Approx. 22.9 kg (50.5 lbs)

72 cells in series (6 x 12 matrix) (Hyundai cell, M ade in Korea)

4 mm' (12AWG) cab les with polarized weatherproof connectors, IEC certified (UL listed and UL 4703 certified), Length 1.2 m (47.2")

IP67, weatherproof, IEC certified (UL listed)

3 bypass diodes to prevent power d ecrease by partial shade

Front: Anti-reflection coated g lass (Anti reflection coated), 3.2 mm (0.126'? Encapsulant : EVA Back Sheet: Weatherproof film

Clear anodized aluminum alloy type 60 63

• IEC 6 1215 (Ed.2) and IEC 6 1730 byVDE , UL listed (UL 1703), Type 1 for Class A Fire Rating • Output power tolerance +3/-0 o/o , ISO 900 1:2000 and ISO 1400 1:2004 Certified • OHSAS 18001:2007 Certified • Advanced Mechanical Test (5,400 Pa) Passed (IEC)

/ Mechanica l Load Test (40 lb s/ft' ) Passed (UL) , IEC 62716 (Ammonia Corrosion Resistance Test) Passed

• IEC 6 1701 (Sa lt Mist Corrosion Test) Passed • Potential-Induced Degradation (PIO) Test Passed

(85"C / 85 o/o / 600 hr-PVEL)

A ·credl PJT tl b • VOE (Test Data Acceptance Program) • UL (Witness Test Data Program)

L mited W ·r n y • 10 years for product d efect • 10 years fo r 90 % of warranted min. power • 25 years for 80 %of warranted min. power

* Important Notice on Warranty

The warranties apply only to t he PV modules with Hyundai Heavy Industries Co., Ltd.'s

logo(s hown below) and product ser1a l number on It.

* Several models are under certlflcatlon process.

..&. HYUNDAI HEAVY INDUSTRIES

Attachments 1a, 1b, 1c - PV Panel, Rooftop Mount, Inverter Cut Sheets

, I ,-

I Poly-crystalline Type I

Nominal output (Pmpp)

Voltage at Pmax (Vm pp)

Current at Pmax (lmpp)

Open circuit voltage (Voe)

Short circuit current (lsc)

Output tolerance

No. of cell s & connections

Cell type

Module efficiency

rlstlcs

Ternperan..ire coefficient of Pmpp

Tern perature coefficient of Voe

Temperature coefficient o f lsc

w V

A

V

A

%

pcs

%

%/K

%/K

%/K

310

36.0

8.6

45.3

8.9

15.8

*All data at STC (Standard Test Conditioos), Above data may be changed without pricr notice.

I Mono-crystalline Type I

Nominal output (Pmpp) w 335

Voltage at Pmax (Vm pp) V 38.2

Current at Pmax (lmpp) A 8.8

Open circuit voltage (Voe) V 46.5

Short circuit current (lsc) A 9.4

Output tolerance %

No. of cell s & connections pcs

Cell type

Module efficiency % 17.1

Temperarure coefficient of Pmpp %/K

Temperatt.Jre coefficient ofVoc %/K

Temperarure coefficient of lsc %/K

*All data at STC (Standard Test Conditioos), Above data may be changed without pricr notice.

I Module Diagram I

I Installation Safety Guide I

GROUNDIM.RK

4X04.2 GRO~DHCU

948(37.121

4X07-l11 HOLES

• Only qualified personnel should install or perform maintenance.

• Be aware of dangerous high DC voltage.

• Do not damage or scratch the rear surface of the module.

• Do not handle or install modules when they are wet.

Sales & Marketing

315 320 325

36.2 36.4 36.6

8.7 8.8 8.8

45.5 45.7 45.9

9.0 9.0 9.1

+3/-0

72 in series

6" Poly- cryst alline sili co n (l-lyundai cell, M ad e in Korea)

I 16.1 I 16.4 /

-0.4 1

16.6

-0 .32

0.039

I r "'l 345 350 355 360

38.4 38.6 38 7 38.9 39.1

8.9 9.0 90 9.1 9 .2

46.7 46.9 47 1 47.3 47.4

9.5 9.6 96 9.7 9 .8

+3/ -0

72 in series

6" Mono-crystalline silicon (Hyundai cell, Made in Korea)

17.1 I

DITAILA

-

DITAILB

DITAILC

17.6 I -0.42

-0.30

0.047

(unit: mm, inch)

8 07 SLOTT><OJ l

17.9 I 18.1 18.1

I 1-V Curves I

4 ln<Jd.~rad=l,OOOVI/~ 4x'ratilgCalTemp =5'C

2 - c,:,eratilgCalTemp=25( - ~trigCelTemp=45C

1 - c:,:,eratilgCalkrnp=65(

Curl'eflt [AI

' lnod.l"rad = l,00:•W/~

ln<Jd,lmld=BOOW/mi

- lncid. had = 600W/ml

- ln<Jd,rnld =400W/ml

lncid.U'id = 200W/mi

"' . Voltage {\/)

0o 5 10 15 ll 25 'JO 15 4(1 45 il

Vollag<-[V]

46'C± 2

-40 - 85·c

DC l ,OOO V(IEC) DC 1,000 V(UL)

15A

( :Yirited Da te .December 2016 ]

Hyundai Bldg., 75, Yulgok-ro, Jongno-gu, Seoul 03058, Korea • HYUNDAI HEAVY INDUSTRIES Tel : +82-2-746-7563, 7635, 8406 Fax : +82-2-746-7675

Panel''' caw®

Racking Dimensions for Point Loads (Typica l) :

Inter-Module Support

Spacing=

Inter-Colum n Support

Spacing=

56.22 in.

22.26 in.

Racking Dimensions for Point Loads (Typ.):

,\

t

South ---->~ 10.4"

Partner Name: SolarPark USA Racking System: Polar Bear Ill HD

.. ~ F '

~ ~ F ' - ~

" F •

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" F '

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~

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Typica l Array Plan View

(Section A-A on Next Page)

A

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Three Phase Inverters for the 277/480V Grid for North America

SElOKUS / SE20KUS / SE33.3KUS

•

•

• The best choice for SolarEdge enabled systems - Specifically designed to work with power optimizers

- Integrated arc fault protection for NEC 2011690.1

- Rapid shutdown for NEC 2014 690.12

- Superior efficiency (98.5%)

- Outdoor and indoor installation

- Built- in module-level monitoring

- Internet connection through Ethernet or Wireless

- Small, lightweight and easy to install on provided bracket

- Fixed voltage inverter, DC/AC conversion only

- Integrated Safety Switch and DC fuses (plus & minus)

USA · CANADA · GERMANY · ITALY . FRANCE · JAPAN . CHINA· AUSTRALIA· THE NETHERLANDS· UK· ISRAEL . TURKEY · SOUTH AFRICA . BULGARIA www.solaredge.us

Phase Inverters for the 277/480V Grid for North America

SE10KUS / SE20KUS / SE33.3Kus111

OUTPUT

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SEl0KUS SE20KUS SE33.3KUS

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Yes

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Night-time Power Consumption ADDITIONAL FEATURES

Rapid Shutdown - NEC 2014 690.12

STANDARD COMPLIANCE

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INSTALLATION SPECIFICATIONS

.. ":.C::.9.~!~.~!.~?.~~-~!! .s_i_z_~/.(l:~G.;?.ry~-~.......................... 3/4" minimum/ 12-6 AWG

. .'?.~. i.~P.~1. ~~.ry~~!! .~i.~~/.":~~ !.~~!l.~ ......................................................... '3/,/·. ;,;i~·i;.;;~;.;; j'i'i:ii i:..ii,jG ....................................... ..

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Attachment 2: Typical Accumulation Panel, AC and DC Disconnects for PV Solar

Page intentionally left blank

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I ELECTRICAL ROOM I (GROUND LEVEL) /

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LEGEND

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SYSTEM NOTES

SYSTEM SIZE (DC): kW

SYSTEM SIZE (AC)· kW

ANNUAL OUTPUr. M1MI

PV r,.t:)DlJLES: HYUNDAI HIS.S350RI

PVMOOUI F SI7F· n 17x39?9x 157 IN

NO. OF PV MOO. 233

INvtK I tl<S: (2) wt.AK toot 33.JKUS (1) SOLAR EDGE 10KUS

lil---------------------------...------,---------...----------,-----------,-----4 i l"'.,ti~ -

AP.' 1Sl()tg

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O<MJ'!IPl':ON ~ M" -i i u,.__,__,_ __________ _,_ ........ __,,_

e_x,,A B C

~ DC SOLAR 409 12th Street SW Suite 603

DC Solar Washington, DC 20024 (202) 478-2060

AJOINl VENiURt--

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Takoma Education Campus PV Sola1 OeYcloprnenl

K

7010 Pir.cy Brandi Rd NW Wastwlgton, DC 20012

L M

OAAWI\IG W.44: OIIAY<ING_NW!l9'1

Roof Plan E3 Solar Panel Layout

'""' s 0, u N 0 p

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9

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