Solar for the home installation and maintenance-20161

E.N.G.I.N.E.E.R., Inc.
SOLAR for the
HOME – Part 2
Installation & Maintenance
Prepared/ Compiled by:
Engineer William Jacinto Juan, pee/ rmp/ mepf/ ma/ broadcaster
Dep. GenSec, E.N.G.I.N.E.E.R., Inc.
Co-Founder, MEPF Engineers Co.
Nat’l President, PIPES
Former Committee Chair, IIEE Balik Liwanag & Electrical Safety
Former NP, PSUMP/ NAMPAP Pro-Change/ Pugad Lawin Phils.
Proprietor, FEMP Safety Engineering Construction, 2013-present
CEO/Founder, Versatech Consultants & Mgmt.Corp., 1985-2015
June 2016

Short Resume of Resource Speaker/ Lecturer:
Engr. William Jacinto Juan, pee,rmp,mepf,ma
0943 0616 215 / 0915 292 8668 / 0929 555 2508 / pldt mobile 73 69 159
Admin/Founder – SOLARSAFE PHILIPPINES, a FB Group
Dep.Gen.Sec/Co-Founder – E.N.G.I.N.E.E.R., Inc.
Training Director/Co-Founder – MEPF Engineers Co.
Gen.Manager/Proprietor of FEMP Safety Engineering Construction, 2013-present
President/CEO/Founder of Versatech Consultants & Mngt.Corp., 1985-2015
President, Phil.Integrated Plumbing Engineers Society (PIPES), 2014-present
Founding President, Phil. Society of United Master Plumbers (PSUMP), 2013
National President, Pro-Change NAMPAP, 2012-2013
Former IIEE Nat’l Treasurer/ Nat’l Auditor/ Governor-at-Large
Former Chairman, IIEE Balik Liwanag Committee & Electrical Safety Committee
Was Electrical Consultant/ Designer for PICOP/ SMC/ Parsons Int’l/ AEP Int’l/
Caltex/ Petron/ Coca Cola/ Selecta/ Avida / DMCI-UPDI/ Motolite Projects
Former EE Professor @ National U, 1979-1991
PEE-Top 1 (Oct.1980)/ Asso.EE-Top 3 (Sept.1979) / Asst.EE-Top 8 (Aug.1976) /
RMP-Top 5 (Sept.1989) / Amateur Radio License DU1-ICH (94.5% rating)
BSEE 1976 – NU / BSME 1987 – NU
National President - Pugad Lawin Philippines, Inc., 2009,2010,2011
President – Rotary Club of Pasig North, RID3800, 2005-2006
Broadcaster/ Co-Anchor – Talakayang Pinoy, DWAD 1098Khz

* Introduction/ Background
* Why We Need to Adopt Rooftop Solar ASAP
* Latest Estimated Costs for Rooftop Solar/Payback
* Advantages/ Disadvantages of Solar System
* On Grid/ Off Grid Systems/ Hybrid Systems
* Schematic/ Connection Diagrams
* Power & Energy Calculations
* Installation
* Maintenance
Table of Contents

Philippines viz-a-viz the Sun Rays,
viz-a-viz the Equator..
Earth viz-a-viz
the Sun Rays
Philippines viz-a-
viz the World

Optimum
Orientation of PV
Panels
In the Philippines, the
optimum tilt of the panels
should be approximately equal
to the latitude x 0.87.
The Philippines is located
between the latitude 4deg.N
(Tawi-tawi) to 21deg.N
(Batanes) North of the
Equator.
The NCR is approximately at
14 deg.N, so for Metro Manila,
the optimum tilt of panels is 12
deg., facing South.

GENERAL ADVANTAGES OF SOLAR
POWER
1. It Saves Money Spent on Electricity
2. It can Earn Additional Revenue or Income..
3. It’s an Efficient System (from roof to inside house, no need for
the electricity produced to flow through the HV transmission lines)
4. It’s Non-Polluting (no exhaust smoke, zero carbon foot print)
5. It Can Power Remote Locations (like remote islands, far flung
barrios, mountain side cell sites or relay stations)
6. It’s Renewable or Limitless (the sun is believed to be the
infinite source of all energy in the universe)
7. It’s Noiseless (no combustion, no rotating parts, etc.)
8. There’s Almost No Maintenance Cost (no ball bearings or
bushings to wear or oil or filter to change)
9. It Reduces Dependence on Fossil Fuels

RA 9513 Offers Fiscal & Non-
Fiscal Incentives
(1) Income tax holiday;
(2) Duty-free importation of renewable machinery,
equipment, and materials;
(3) Special realty tax rates;
(4) Net operating loss carry-over;
(5) Corporate tax rate of 10%;
(6) Accelerated depreciation of plant, machinery, and
equipment;
(7) 0% value-added tax rate;
(8) Tax exemption on carbon credits; and
(9) Cash incentive for missionary electrification.

Solar Energy.. Free.. Limitless.. Efficient.. Clean..
APPARENT DISADVANTAGES OF
SOLAR ENERGY
1. High Initial Cost? – although the trend is the cost is
rapidly going down
2. Reduced Reliability? – it is useless during night time
and reduced output when cloudy
3. Large Area Needed? – Large area needed for big
energy users such as manufacturing plants

1. PRICE? BUT WHAT’S THE
PRICE TREND?
We bought a 75-watt solar panel made by BP or British Petroleum in 2009, a
surplus from previous cellsite installations by a contractor, the cost was
PhP19,000.00 per the 75-watt panel (PhP76,000 for a 300watts equivalent).
In 2015, we purchased a 300-watt panel made by SKF of Germany with a
cost of PhP11,000 (Feb 2015) to PhP10,500 (Nov 2015) per the 300-watt
panel.
Recently, this May 2016, we again purchased 300-watt panels made in
Germany with a price of PhP9,900 per the 300-watt panel.
The reduction in cost of PV panels within the 6-year period from 2009 to
2015 is over seven-fold!
Year 2009 2011 2013 2014 Feb 2015 Nov 2015 May 2016
Price P76,000/ - - P14,000/ P11,000/ P10,500/ P9,900/
The increasing demand for PV panels will bring down the cost lower and
lower until each home has its own.

2. REDUCED RELIABILITY? HERE
ARE SOME WAYS TO INCREASE IT
1. On-Grid Use – surplus energy from solar roof tops can
be used by others in the grid.
2. Use of Storage Batteries – adequate storage capacity
ensures 24/7 supply.
3. Combination Use w/ Other RE Sources, i.e. Wind
Mills in windy farms and in tall buildings.
4. Combination Use of Pump-Storage Hydro System,
i.e. Kalayaan Pump Storage Hydro Power Plant
5. Encourage SMEs Powered by Solar- some samples
home based enterprises that can be run from solar rooftops:
ice making, ice-cream making, meat food processing (w/
freezer), electric trike transport service, etc.

Build More Pump-Storage Hydro
Power Plants
Excess solar energy in the grid during daytime from rooftops can be
used to pump water to the upper basin; Reverse process is done at
night time to supply energy to the grid. This facility can double up as
a flood control infrastructure and supports irrigation systems.

Top 16 Philippine Rivers Where to Build
Pump-Storage Hydro P/Ps...
1. Cagayan River, 505km, 2. Rio Grande River (Cotabato), 373km,
3. Agusan River, 350km, 4. Pulangi River (Bukidnon), 320km,
5. Pampanga River, 260km, 6. Agno River (Pangasinan), 206km,
7. Laoag River, 188km 8. Abra River, 178km
9. Abulog River(Kalinga),175km 10. Chico River(Kalinga),174km
11. Davao River, 160km 12. Magat River(Isabela),149km
13. Jalaur River (Panay), 122km 14. Matalag River (CAR), 114km
15. Tagoloan (Mis.Or.),105km 16. Bicol River (Camsur), 93km

Encourage Small/Medium Enterprises
(SMEs) Powered by Solar Energy
SOME SAMPLES HOME BASED OR
BACKYARD ENTERPRISES THAT CAN BE
RUN FROM SOLAR ROOFTOPS:
1) ICE MAKING
2) ICE-CREAM MAKING
3) MEAT FOOD PROCESSING (W/ FREEZER)
4) LAUNDRY SERVICES
5) DC WELDING SHOP
6) ELECTRIC TRIKE TRANSPORT SERVICE
7) OTHERS

3. ON THE LARGE AREA REQUIRED
Every home roof is a large potential collective area to install
solar panels. If the 100 million population have 21 million
homes in year 2015 (Source: National Statistics Office) and say
10 million homes have at least 1KW solar capacity, this would
be equivalent to 10,000MW capacity. Or if each roof has 2KW
solar capacity, this would be 20,000MW capacity, if each roof
has 3KW, this would be 30,000MW capacity, and so on, at least
during day time.
Also, every warehouse roof, every public market roof,
every parking area roof, every school roof, every church
roof, every covered sports or public assembly building is a
large potential area to expand this system.

EVENTUAL EFFECT OF HOME ROOF
SOLAR ENERGY TO THE ECONOMY
1. FREE SUN ENERGYTO
EVERY HOME/ROOF.
2. ANY EXCESS
ENERGY FROM SOLAR
EXPORTED TO THE
GRID.
4. DISTRIBUTION
UTILITIES/ TOLLWAYS
TO LOWER THEIR
CHARGES, TOO.
5. THE COST PER KWHR
OF ELECTRICITY WILL
GO DOWN GRADUALLY.
3. DUE TO THE FREE
ENERGY TO THE GRID,
POWER PLANTS (IPPs)
WILL BE FORCED TO
LOWER THEIR PRICES.
6. MORE INVESTORS
WILL COME TO PUT
UP FACTORIES IN
OUR COUNTRY!

ESTIMATED COSTS OF HOME
ROOFTOP SOLAR (Off Grid)
SOLAR POWER GENERATOR PRICE MATRIX - Jan 2016
Mo.Billing Min.Kw Qtty of Panel Total PV Cost of PV Inv. Cost of Inv No.of Cost of Batt No.of Cost of Direct Cost Install'n Total
Ave,PhP Capacity Panels KW Watts Panels KW Cost of Inv SCC SCCs AH Batt Batt Eqpt Cost Cost
1 1,000.00 0.331 2 250 500 18,000.00 1 3,000.00 2 2,400.00 200 1 8,000.00 31,400.00 10,990.00 42,390.00
2 1,500.00 0.496 2 250 500 18,000.00 1 3,000.00 2 2,400.00 200 1 8,000.00 31,400.00 10,990.00 42,390.00
3 2,000.00 0.661 3 250 750 27,000.00 1 3,000.00 3 3,600.00 200 1 8,000.00 41,600.00 14,560.00 56,160.00
4 2,500.00 0.827 4 250 1000 36,000.00 1 3,000.00 4 4,800.00 200 1 8,000.00 51,800.00 15,540.00 67,340.00
5 3,000.00 0.992 4 250 1000 36,000.00 1 3,000.00 4 4,800.00 200 1 8,000.00 51,800.00 15,540.00 67,340.00
6 3,500.00 1.157 5 250 1250 45,000.00 1.5 3,800.00 5 6,000.00 200 1 8,000.00 62,800.00 18,840.00 81,640.00
7 4,000.00 1.323 6 250 1500 54,000.00 1.5 3,800.00 6 7,200.00 200 1 8,000.00 73,000.00 21,900.00 94,900.00
8 4,500.00 1.488 6 250 1500 54,000.00 1.5 3,800.00 6 7,200.00 200 1 8,000.00 73,000.00 21,900.00 94,900.00
9 5,000.00 1.653 7 250 1750 63,000.00 2 4,500.00 7 8,400.00 400 2 16,000.00 91,900.00 27,570.00 119,470.00
10 5,500.00 1.819 8 250 2000 72,000.00 2 4,500.00 8 9,600.00 400 2 16,000.00 102,100.00 30,630.00 132,730.00
11 6,000.00 1.984 8 250 2000 72,000.00 2 4,500.00 8 9,600.00 400 2 16,000.00 102,100.00 30,630.00 132,730.00
12 6,500.00 2.149 9 250 2250 81,000.00 3 7,000.00 9 10,800.00 600 3 24,000.00 122,800.00 36,840.00 159,640.00
13 7,000.00 2.315 10 250 2500 90,000.00 3 7,000.00 10 12,000.00 600 3 24,000.00 133,000.00 39,900.00 172,900.00
14 7,500.00 2.480 10 250 2500 90,000.00 3 7,000.00 10 12,000.00 600 3 24,000.00 133,000.00 39,900.00 172,900.00
15 8,000.00 2.646 11 250 2750 99,000.00 3 7,000.00 11 13,200.00 600 3 24,000.00 143,200.00 42,960.00 186,160.00
16 8,500.00 2.811 12 250 3000 108,000.00 3 7,000.00 12 14,400.00 600 3 24,000.00 153,400.00 46,020.00 199,420.00
17 9,000.00 2.976 12 250 3000 108,000.00 3 7,000.00 12 14,400.00 600 3 24,000.00 153,400.00 46,020.00 199,420.00
18 9,500.00 3.142 13 250 3250 117,000.00 4 9,000.00 13 15,600.00 800 4 32,000.00 173,600.00 52,080.00 225,680.00
19 10,000.00 3.307 14 250 3500 126,000.00 4 9,000.00 14 16,800.00 800 4 32,000.00 183,800.00 55,140.00 238,940.00
20 11,000.00 3.638 15 250 3750 135,000.00 4 9,000.00 15 18,000.00 800 4 32,000.00 194,000.00 58,200.00 252,200.00
21 12,000.00 3.968 16 250 4000 144,000.00 4 9,000.00 16 19,200.00 800 4 32,000.00 204,200.00 61,260.00 265,460.00
22 13,000.00 4.299 17 250 4250 153,000.00 5 15,500.00 17 20,400.00 ### 5 40,000.00 228,900.00 68,670.00 297,570.00
23 14,000.00 4.630 19 250 4750 171,000.00 5 15,500.00 19 22,800.00 ### 5 40,000.00 249,300.00 74,790.00 324,090.00
24 15,000.00 4.960 20 250 5000 180,000.00 5 15,500.00 20 24,000.00 ### 5 40,000.00 259,500.00 77,850.00 337,350.00
25 16,000.00 5.291 21 250 5250 189,000.00 6 21,500.00 21 25,200.00 ### 6 48,000.00 283,700.00 85,110.00 368,810.00
26 18,000.00 5.952 24 250 6000 216,000.00 6 21,500.00 24 28,800.00 ### 6 48,000.00 314,300.00 94,290.00 408,590.00
27 19,000.00 6.283 25 250 6250 225,000.00 7.5 28,000.00 25 30,000.00 ### 7 56,000.00 339,000.00 101,700.00 440,700.00
28 20,000.00 6.614 27 250 6750 243,000.00 7.5 28,000.00 27 32,400.00 ### 7 56,000.00 359,400.00 107,820.00 467,220.00
29 21,000.00 6.944 28 250 7000 252,000.00 7.5 28,000.00 28 33,600.00 ### 7 56,000.00 369,600.00 110,880.00 480,480.00
30 22,000.00 7.275 29 250 7250 261,000.00 7.5 28,000.00 29 34,800.00 ### 7 56,000.00 379,800.00 113,940.00 493,740.00

ESTIMATED PAYBACK OF
ROOFTOP SOLAR
Example: 6 x 250wp, 1.5kw Inverter,
SCCs, 200AH battery (Item 8)
Estimated Total Cost: PhP 94,900.00
Ave.Monthly Billing = PhP 4,500.00
Payback Period = _PhP 94,900.00___________
PhP4,500.00 per month x 60%
= 35 months, or
= 2 years & 11 months

ON GRID
& OFF GRID
SOLAR SYSTEMS

Paralleling of Power Systems
The requirements of paralleling or synchronizing power supply sources are:
1. The incoming line must have SIMILAR VOLTAGE, i.e. 220 volts, as the
normal power supply.
2. The incoming line must have SIMILAR FREQUENCY, i.e. 60 Hertz, as the
3. The incoming line must have the SIMILAR PHASE SEQUENCE (or rotation)
i.e, (Phase A-B-C or C-B-A), as the normal power supply.
4. The incoming line must have SIMILAR PHASE ANGLE, i.e. zero phase, as the
Note that requirement No.3 is only required for 3 phase power systems and not
applicable to single phase systems. For single phase Grid-Tie inverters, they have a
built in intelligence to parallel itself to the grid. Off Grid inverters have no
capability of automatic paralleling.
When 2 sources are in parallel, the source that has a slightly higher frequency
setting will deliver its power to the grid. Therefore, Grid Tie inverters are designed
as priority power sources. They have slightly higher frequency settings, i.e. 60.05 to
60.1Hertz or slightly higher.

Paralleling of Off Grid Solar
Inverters -2
This sketch shows
a full line diagram
of a possible way
to parallel two
single phase pure
sine wave off-grid
micro inverters of
the same ratings:
same voltage,
same frequency,
same KW, same
brand or make.

On Grid or
Grid Tied
Solar System
Any extra energy
produced by this
solar system may
be exported to the
grid or to the
distribution
utility (DU).
www.cabrelli-electrical.co.uk

Grid Tied Solar System
w/ Back-up.
The system has 2 inverters,
one is Grid Inverter (2) which
can export to the grid. The 2nd
Inverter (6) regularly supplies
the Secured or Essential
Loads (4) from the Batteries
(5). The Transfer Switch (3)
automatically feeds the
Essential Loads to
complement the power from
the battery in case of a
brown-out during sunny days.
www.mysolarshop.co.uk

OFF GRID SOLAR SYSTEMS

From www.alibaba.com

HYBRID SYSTEM W/ GENERATOR SET
From www.peakprosperity.com
UTILITY

COMPONENTS OF THE SOLAR
SYSTEM:
1. SOLAR PV PANELS
2. SOLAR CHARGE CONTROLLER (90VR)
3. INVERTER
4. BATTERIES
5. BATTERY CHARGER
6. GENERATOR SET (OPTIONAL)
7. WIRINGS & CIRCUIT PROTECTIONS
8. TRANSFER SWITCH FOR OFF GRID TYPE/
9. TIE-IN BREAKER FOR ON GRID TYPE

SOLAR POWER
MEASUREMENTS

SOLAR POWER MEASUREMENTS
Ampere is a measure of current flow
Volt is a measure of the potential difference between 2 lines or
points
Watt (W) is a measure of Power
– Unit rate of electrical energy
Ampere x Volt = Watt
1 Kilowatt (kW) = 1000 watts
Watt-hour (Wh) is a measure of electric energy or consumption
and production
– Watts x hours = Watt-hours
1 Kilowatt-hour (kWh) = 1000 Wh

DC = Direct Current
PV panels produce
DC voltage,
Batteries store DC
power
AC = Alternating
Current
Utility power,
Most consumer
appliances use AC

MEASURING INSTRUMENTS..
Clamp-on meter Digital multi-meter
 Never test battery current using a multi-meter!

SOLAR ENERGY
CALCULATIONS
& DESIGN

BASIC FORMULAS/ DESIGN GUIDE
I = V / R or Amperes = Volts / Ohms
I = P / V or Amperes = Watts / Volts
I = KVA * 1000 / V
I = KW * 1000 / V / PF
I = HP * 746 / V / PF / Eff’y
Where:
PF, power factor = 0.80 for motors;
= 1.0 for heater and resistive loads
Eff’y, efficiency of motors = 0.90
Max.Loading per Circuit Wire: 80% of Ampacity

PEC-1
ALLOWABLE
AMPACITIES
OF 600 VOLTS
INSULATED
WIRES,
60º C TO 90ºC,
NOT MORE
THAN 3
WIRES IN
CONDUIT,
AMBIENT
TEMP. OF 30ºC

VOLTAGE DROP CALCS
SHORT CUT FORMULA:
VD = 2 * K * L * I / Sq.Circular Mils
Note: This is only for a 2 wire circuit.
K = a constant, 12 for copper, 18 for Aluminum
L = Length of circuit in feet
I = Load in amperes
Cir.Mils = square of the dia. of wire in mils (1000mils
per inch or 40mils per mm.)

Sample Voltage Drop Calcs..
Example: The distance of a 300 watts 24 volts PV panel to the
SCC/ Battery/ Inverter is 8 meters. Using 5.5mm2 wires
(Ampacity = 40 amperes), what is the voltage drop?
I = 300 watts/ 24 volts = 12.5 amps
Cross-sectional area of wire: 3.5sq.mm
D * D = 5.5 * 4 / 3.1416 = 7.0mm
D = 2.6mm = 2.6 * 40mils / mm = 104mils
CM = 104 * 104 = 10,854 circular mils
VD = 2K*L*I / CM
VD = 2 * 12 * 8 * 3.28 * 12.5 / 10,854 = 0.725 volts
% VD = 1.81 * 100 / 24 = 3.02
It barely exceeds the allowable which is 3 percent!

SOLAR PANEL SPECIFICATIONS
Module Type: BP 275 UL GY 250 M-60 300-180-M
Made: BP SOLAR JIANGYIN GUANGYE SKP GERMANY
Made: PV-Tech Co.,Ltd.
Specifications: Rating: Rating: Rating:
Maximum Power: 75W 250W 300W
Tolerance: 17.0V ± 3%
Open Circuit Voltage: 21.4V 37.4V 21.8V
Short Circuit Current: 4.75A 8.76A 18.33A
Maximum Power Voltage: 30.7V 18.0V
Maximum Power Current: 8.15A 16.6A
Maximum System Voltage: 600V 1,000VDC 1,000V
Nominal Operating Cell Temperature: -47 ± 2˚C 45 ± 3˚C
Temperature Cycling Range: -40˚C to 85˚C
Dimensions: 1,950 X 990 X 45mm
Application Class: CLASS A CLASS A - MONO- SI
Fire Rating: CLASS C CLASS C
Total Dimensions:
a.Lenght: 1,190mm 1,640mm 1,960mm
b.Width: 530mm 1,000mm 1,000mm
c.Thick: 43mm 35mm 45mm

Calculating the Max.Capacity That
Can Be Installed in a Given Roof…
… using 250watts PV panels & providing for enough space for
maintenance access (Size: 1640mm long x 1000mm wide):
Given: 8 meters wide x 15 meters long roofing
2 slopes, ridge along length
Maximum solar capacity:
Width: 8 – (2 x .9) / 1M = 6.2, say 6 panels
Length: 15 - (2 x .9) – (5 x .6) / 1.640 = 6.2, say 6 panels
Total no. of panels = 6 x 6 = 36
Capacity : 36 x 250w = 9,000watts or 9KW

Layout
of a 36-
250
Watts
Panel
9KW
Solar
Rooftop

Layout Plan of a 99 - 250 Watts
Panel 24.75KW Solar Rooftop
NORTH

Elevation Plan of a 99 - 250 Watts
Panel 24.75KW Solar Rooftop
NORTH

SOLAR PV PANEL
CONNECTIONS
–
DIRECT CURRENT SIDE
The PEC Allows Up to 50 Volts
Only on Roof Tops!

PV Panel Series Connections
 PV panel sources wired in
series
– VOLTAGES ARE ADDITIVE
– CURRENT IS EQUAL
– One interconnection wire is used
between two components
(negative connects with positive)
– Combined modules make series
string
– Leave the series string from a
terminal not used in the series
connection

Three – 200Watt 12-Volts Panels
in Series…

Another Three – 200Watt but 32-
Volt Panels in Series…

Three Panels in Series, Different
Voltage Ratings…

PV Panel Parallel Connection
 PV panel sources wired in parallel:
– VOLTAGE REMAINS CONSTANT
– CURRENTS ARE ADDITIVE
– Two interconnection wires are used between two
components (positive to positive and negative to negative)
– Leave off of either terminal
– Modules exiting to next
component can happen
at any parallel terminal

Two Panels in Parallel…actual
connection

Four Panels, Series-Parallel
Connection…

Six Panels, Series-Parallel
Connection…

12Volts DC Panel Connection –
Supply 220V AC Lighting, etc.

12Volts DC Panel Connection –
Supply 220V AC Computer

SOLAR CHARGE
CONTROLLERS…
12/24 VOLTS DC
CONTROLLER
48 VOLTS DC
CONTROLLER

INVERTERS &
CONNECTIONS
–
ALTERNATING CURRENT
SIDE

On-Grid or Grid Tie Inverters
A 500-Watt 220V 60Hz
Grid Tie Inverter

Connecting an On-Grid or
Grid Tie Inverter…
TIE IN POINT
Grid Tie Inverters
Automatically Synchronize
Itself to the Utility Power

A 4KW 12VDC - 220V 1-Phase 60Hz
Pure Sine Wave Off-Grid Inverter

A 4KW 24VDC - 220V 1-Phase 60Hz
Pure Sine Wave Off-Grid Inverter

Two x 4KW 24VDC - 220V 1-Ph 60Hz
Pure Sine Wave Off-Grid Inverters

A 3KW 220V 1-Ph 60Hz Pure Sine Wave
Transformer Type Off-Grid Inverter

Connecting an Off-Grid
Inverter with a Relay Switch…

Connecting an AC Battery
Charger to an Off-Grid System
Small DC
Loads
Off Grid
Inverter
220V
AC
60Hz
220V
AC
Loads
Power From Utility

POWER & ENERGY CALCULATIONS-1
Ex.1. Provide small solar capacity for a home with the following loads:
One (1) Small Ref, 226 watts; One (1) Elec. Fan, 50watts; One (1) LED TV,
36watts; One (1) celfone charging outlet, 2 x 10 watts, Six (6) LED lamps,
5watts each. What min.size of ON GRID solar system in watts is needed?
Design the wiring system.
1.1 Pref = 226/ 0.80pf = 282.5 watts
1.2 Pfan = 50 / 0.80pf = 62.5 watts
1.3 PTV = 36 watts
1.4 Pcc = 2 x 10 = 20 watts
1.5 PLED = 6 x 5 = 30 watts
1.6 Ptotal=282.5(1.25)+62.5+36+20+30= 501.625watts
1.7 Pdemand = 501.625 x 80% = 401.3 watts
1.8 Use: 2 x 250watts panels, or a total of 500 watts
1.9 Use: 1000watts inverter with 220volts, 1-ph, 60 Hz
output, 12vDC input

Ex.1. A home has the following loads:
One (1) Ref, 1/2HP; Two (2) Elec. Fan, 50watts each; One (1) TV, 80watts;
Ten (10) LED lamps, 5watts each
What min.size of ON GRID solar system in watts is needed? Design the
wiring system.
POWER & ENERGY CALCULATIONS-
2
1.1 Pref = 746 (0.5) / 0.80pf / 0.9 eff’y = 518 watts
1.2 Pfan = 2 x 50 / 0.80pf = 125 watts
1.3 PTV = 80 watts
1.4 PLED = 10 x 5 = 50 watts
1.5 Ptotal = 518(1.25) +125 + 80 + 50 = 902.5 watts
1.6 Pdemand = 902.5 x 80% = 722 watts
1.7 Use: 3 x 250watts panels, or a total of 750 watts
1.8 Use: 1000watts inverter with 220volts, 1-ph, 60
Hz output, 12vDC input

Cont’n..
1.7 For the Solar Controller:
I = 250watts /12voltsDC = 20.83 amps
Use: One 60Amps Controller for the 2 panels & One 40Amps Controller
for the 3rd
panel
1.8 Wiring Connections:
From PV panels to Solar Controllers, I = 20.83Amps
Use: Two – 3.5sq.mm THWN (30A) Red-Black, each PV panel
From Solar Controllers to Inverter, Use: 3 sets of 2-3.5sq.mm THWN (90A)
From Inverter to Tie-breaker: I = 1000watts / 220 volts = 4.54 amps
Use: 2-2.0sq.mm THWN + 2.0 Ground Wire; Ckt. Prot’n: 15AT/2P CB
POWER & ENERGY CALCULATIONS-2a

Ex.2. A PV array is composed of
eight 250-watt 31.6VDC solar
modules with a 3KW inverter with
220volts, 1-phase, 60Hz output and
48VDC input.
What size is the solar system in
watts? Capacity in Amps? Design
the wiring system.
2.1 P = 8 x 250 = 2000watts
2.2 I = 2000watts /220volts =
= 9.09 amps capacity
POWER & ENERGY CALCULATIONS-
3

2.3 Size of wires from the PV panels to the Solar Controllers:
Since the input voltage of the inverter is 48VDC, then the number of
panels in group is: 2 x 31.6V per panel = 63.2VDC
Ic = 2 x 250W / 48V = 10.41amps
Use: Two – 3.5sq.mm THWN (30A) Red-Black, for every 2 PV
panels
2.4 Size of wires from the Solar Controllers to Inverter:
The total charging current is = 4 x 10.41 = 41.67amps
Ic = 41.67 x 125% = 52.08 amps; Use: 60amps Solar Controller
Use: Two sets of 2 – 3.5sq.mm THWN (2 x 30A = 60A)
2.5 Size of wires from Inverter to Tie-breaker; Ic = 9.09 amps;
Use: 2 – 2.0sq.mm THWN + 2.0 Ground Wire
Ckt. Prot’n: 15AT/ 2P CB

Ex.3. Install a PV array for a 4000-watt inverter with 220-volt 1-ph
60Hz output. Input rating is 48 volts DC.
3.1 Calculate the number of panels, say assuming 300w SKF panels w/
20.8VDC voltage rating,
# of panels = 4000w / 300w per panel = 13.33
say use 15panels (divisible by 3s)
3.2 Since the rating of the inverter is 48VDC, we need at least 3 panels
in series to produce over 48VDC.
Max.voltage of 3 panels in series is = 2 x 20.8 = 62.4VDC
Charge controller: to be set at 55.2VDC floating
POWER & ENERGY CALCULATIONS-4

3.3 For the size of wires from 3 panels in series to charge controller =
= 3 x 300W /48VDC = 18.75amps
Iw = 18.75 x 1.25 = 23.43amps
Use : 2 – 3.5 sq.mm THHN (Red – Black); Circuit Protection:
30AT/2P CB
3.4 Number and Capacity of Charge Controller: 3 x 18.75amps =
56.25amps
Icc = 56.25 x 1.25 = 70.31amps
Use: 2 each 40amps controllers each for 3panels, for a total of 10
40amps controllers

3.5 For the size of wires from controllers to batteries, and from
batteries to inverter:
Use: 5 sets 2 – 3.5 sq.mm THHN; Over-all protection: 100AT/2P CB
3.6 For the size of wires to tie inverter to house main panel:
Iinv = 4000w / 220v = 18.18amps;
Iw = 18.18 x 1.25 = 22.72amps
Use: 2 – 3.5sq.mm THHN
Protection: 30AT/2P CB
POWER & ENERGY CALCULATIONS-4b

TYP.RISER DIAGRAM-OFF GRID

STORAGE BATTERIES
STORAGE BATTERY CAPACITY
Ampere-hour (Ah) – the stored energy capacity of a battery
indicated by the amount of combined load in amperes and
the length of time until it is fully discharged.
Quantity of electron flow
Used for battery sizing
Amps x hours = Amp-hours (Ah)
Amp-hours x Volts = Watt-hours (Wh)
A 200 Ah Battery delivering 1A will last 200 hours
200 Ah Battery delivering 10A will last 20 hours
200 Ah Battery delivering 100A will last 2 hours
100 Ah Battery x 12 V = 1200 Wh

USE OF BATTERIES
Storage for the
night
Storage during
cloudy weather
Portable power
supply
Surge Power for
starting motors
BATTERY BASICS
State of Charge (SOC)
Available battery
capacity
Depth of Discharge
(DOD)
Energy taken out of
the battery
Efficiency
Energy out/ Energy in
(typically 80-85%)

Calculating the Required Battery AH..
1. Solar operation: 8AM to 5PM – for 9 hours
2. Battery operation: 5PM to 8AM – for 15 hours
3. For a 900 watts load, the load in amperes is
I = 900watts/ 12volts = 75amps
4. AH = 75amps x 15hours = 1125AH
5. No. of 200AH batteries = 1125AH / 200AH = 5.625
Provide allowance for cloudy periods, add 30% capacity
= 5.625 x 130% = 7.31 units
Use: Eight (8) units of 200AH batteries

Calculating the Required No. of Panels..
1. Charging amps = 1125AH/ 9hours charging = 125amps
2. Total watts, 9-hour charging = 125amps x 12volts
= 1500watts
3. No. of 250watts solar panels for day charging =
1500 / 250watts = 6 panels required for charging
4. No. of 250watts panel for 9-hour day operation =
900watts / 250watts = 3.6, say 4 panels
5. Overall total number of 250watts panels required =
6 + 4 = 10 panels minimum

WHAT TYPE OF BATTERIES IS THE
BEST?
At present, the deep-cycle type, lead-acid batteries are the
most widely used as storage in solar or renewable energy
systems. They are ideally suited for the applications due to
their long, reliable life and low cost. There are many
suppliers/ manufacturers of deep-cycle lead-acid batteries,
it is therefore important to know the technologies, the
performance factors that affect its operation and the life of
the battery.

Types of Deep-Cycle Batteries:
Deep-Cycle Valve-Regulated Lead Acid (VRLA) Batteries
(Maintenance-Free)
Deep-cycle VRLA batteries, which include AGM and gel
technologies, are designed to eliminate the need for water
addition and can be used and installed in any position.
They are engineered so that oxygen created by the positive
plates during charging can migrate to the negatives plate
where it is reduced to water, significantly reducing water
loss.

Factors Affecting Cost of Batteries:
• Price: A cheap battery is always attractive, but if this is
obtained at the expense of quality and battery life, the cost
over time will be high
• Capacity: This is important since its AH is the amount of
energy that can be stored.
• Voltage: The voltage rating should match the input rating
of the inverter to be used in an AC system or the voltage of
the loads in a DC system.
• Brand: Choosing a company that focuses on deep-cycle
technology with a proven track record of manufacturing
deep-cycle batteries is always a good option.

Cycle Life - The Most Important
Consideration
The earlier factors are important but the most important
consideration is the cycle life of the battery. It is the
number of times of discharge/charge cycles the battery can
provide before its capacity drops to a specified percentage
of its rated capacity. Various makers may make batteries
with the same capacity, energy content and maybe similar
in weight, but the design, the materials, the process, and
quality influence how long the battery will cycle.

Battery Ratings – Longer Warm Ups
The battery nameplate rating in AMPERE-HOURS is the
fully developed battery capacity. It may take up to 100+
cycles of charging-supplying-charging for a battery to
reach its full capacity. Measuring or testing the battery
capacity at the start after purchase could be misleading. A
battery that is touted to have full capacity at the time of
purchase or one that has reached full capacity after only a
few cycles should not be believed. Batteries with a 100+
cycle or longer warm-up would last longer.

Expected Life of Solar Batteries…
• Starting: 3-12 months
• Marine: 1-6 years
• Golf cart: 2-7 years
• AGM (absorbent glass mat) deep cycle: 4-8 years
• Gelled deep cycle: 2-5 years
• Deep cycle (L-16 type): 4-8 years
• Rolls-Surrette premium deep cycle: 7-15 years
• Industrial deep cycle (Crown & Rolls 4KS): 10-20+ years
• Telephone (float): 2-20 years
• NiFe (alkaline): 5-35 years
• NiCad: 1-20 years
• http://www.solar-electric.com/deep-cycle-battery-faq.html

SOLAR BATTERY BANKS

SOLAR
INSTALLATIONS

INSTALLING THE SOLAR POWER SYSTEM
It's best to have a solar contractor which employs a licensed electrical
engineer or a licensed master electrician to install the solar system. When
choosing a contractor, ask yourself the following questions:
•Has the company installed grid-connected PV systems? If not, has it installed
off-grid (or stand-alone) PV systems?
• Experience in installing grid-connected systems is valuable because some
elements of the installation -- particularly interconnection with the local utility—
are unique to these systems. However, a competent company with off-grid PV
experience should not be eliminated just because it has not yet installed grid-
connected PV systems. Experience with off-grid systems is valuable too, because
grid-independent systems are more technically complex than grid-tied systems.
(http://energy.gov/energysaver/articles/)

• INSTALLING THE SOLAR…
• How many years of experience does the company have
installing PV systems?
• A contractor who has been in business a long time probably
understands how to work with customers and to compete effectively
with other firms. Additionally, this contractor/ installer will probably
be aware of the latest provision of the Philippine Electrical Code
(PEC) and the permitting requirements of the National Building Code
(NBC) regarding the installation of electrical systems including that
for a solar or other renewable energy supply system. All electrical
works including electrical additions, modifications or renovations
require the filing of Electrical Permit with the Office of the Building
Official.
• (http://energy.gov/energysaver/articles/)

• Is the company properly licensed or certified?
• PV systems should be installed by an appropriately licensed
contractor. This usually means that either the installer or a
subcontractor has a PRC electrical professional license or a PCAB
license. You can check with the website of the PRC if whether a
person has a valid electrical engineer’s or master electrician's
license, or check with PCAB if a contractor is licensed or not.
In addition to being properly licensed, installers must
demonstrate that they have special knowledge about installing PV
systems. (http://energy.gov/energysaver/articles/)
• Special knowledge can be demonstrated through certification by the
solar industry and/or trade associations, eg. SOLARSAFE
PHILIPPINES, MEPF ENGINEERS, etc.

It is always a good idea to get more than one bid for the
installation of your PV system. Make sure that all bids are made on the
same basis. For example, a bid for a system mounted on the ground is
usually very different from another bid for a rooftop system.
Similarly, some PV modules generate more electricity per square
meter than others. Bids should clearly state the maximum generating
capacity of the system -- measured in Watts (W) or kilowatts (kW). If
possible, have the bids specify the system capacity in "AC Watts"
(alternating current) under a standard set of test conditions, or specify
the output of the system at the inverter. Also request an estimate of the
amount of energy that the system will produce on an annual basis
(measured in kilowatt-hours).

Because the amount of energy depends on the amount
of sunlight -- which varies by location, season, and year to
year – it is unlikely that the contractor will quote a specific
figure, but a range of within plus or minus 20% is realistic.
Bids also should include the total cost of getting the PV
system up and running, including hardware, installation,
connection to the grid, permitting, taxes, and warranty.
(http://energy.gov/energysaver/articles/)

The warranty is also a very important factor for
evaluating bids. You may require that system be covered
by a one-year or two-year or three-year parts-and-labor
written installation warranty, for example, in addition to
any manufacturers' warranties on specific components
(including inverter and module warranties). The installer
may offer longer warranties. Also ask yourself, "Will this
company stand behind the full-system warranty for the
next two or three years?"

TYPICAL MOUNTING …

ADEQUATELY SECURE MOUNTING …
It should be emphasized here that when solar systems are to be
installed in areas where the typhoon is usually within the initial path of
super typhoons, eg. along the eastern seaboard of the country, including
the provinces of Samar, Leyte, Biliran, Batanes, Cagayan, Isabela,
Quirino, Aurora, Quezon, Catanduanes, Camarines Norte, Camarines Sur,
Albay, Sorsogon, Surigao Del Sur, Surigao Del Norte, Davao Oriental,
among others, structural support and mountings must be certified to be
adequate for 350 KPH winds (as in Super Typhoon Yolanda in November
2013).
Wind load calculations must be made to determine the size of
concrete foundations for PV arrays, as well as the minimum size of
mounting bolts/nuts. A certification of civil/structural engineer maybe
required here.

TYPICAL
MOUNTING
HARDWARES

TYPICAL
MOUNTING
HARDWARES
- Using EMT Pipes

WIRINGS FROM PV PANELS TO CHARGE
CONTROLLER TO BATTERIES/ INVERTER…
CIRCUIT
BREAKERS
MUST
BE
PROVIDED
IN BETWEEN
DEVICES!

BATTERIES, INVERTER &
CHARGER…

MANUAL TRANSFER SWITCHES,
FOR THE OFF GRID, TO SELECT CONNECTION
FROM SOLAR OR FROM UTILITY SUPPLY…

Automatic Transfer Switches (ATS)
SOCOMEC

ADD’L SAFETY REMINDERS ON
ROOFTOP SOLAR ENERGY SYSTEM
3. A SIMILAR PLAQUE OR
DIRECTORY BELOW MUST
BE PROVIDED!
1. MAX. DC VOLTAGE
FOR DWELLINGS
SHOULD NOT
EXCEED 50 VOLTS!
2. ALL DC WIRINGS
BETWEEN SOLAR
PANELS AND
CHARGE
CONTROLLERS OR
BATTERIES OR
INVERTERS SHOULD
BE PROVIDED WITH
CIRCUIT BREAKERS
OR FUSES.
“THIS HOUSE IS
ALTERNATIVELY
SUPPLIEDWITH
RENEWABLE/SOLAR
POWER. THE MAIN
DISCONNECT IS
LOCATED ATTHE
ROOFDECK.”

MAINTENANCE

MAINTAINING THE SOLAR SYSTEM
As with any mechanical or electrical appliance, PV systems require
routine, periodic maintenance. System components may also need
repair or replacement from time to time.
An efficient and long-lasting system will depend on a periodic
check of system components and completion of any preventive
maintenance as necessary. Talk with your system installer about
routine and periodic maintenance. In the event of a system
malfunction, effective troubleshooting and repair is necessary.

Maintenance of Solar Panels
1.Thoroughly clean the top surfaces of solar PV panels of
dust and/or dirt accumulations. This should be done weekly
in a dusty environment especially during the summer
months, and maybe done monthly or as necessary during
the rainy season. A soft cotton cloth should be used to do
this.
2.Regularly check/ monitor the output voltage of the solar
panels.
3.Check all DC wirings from the panels to the solar
controllers and the respective circuit breakers.

Maintenance of Solar Controllers/Chargers
1.Clean all dust and/or dirt accumulations from controller.
2.Clean all vent openings and ensure that they are free from
obstructions.
3. Check terminals and connections for tightness. Check all
relays, lights, and other indicating devices for proper
operation.
4. If all battery cells consistently read low, check
controller/charger for proper operation. If electrolyte levels
are low, check charger rate settings against the
manufacturer’s specifications. Consistently low levels may
indicate the charge rate is too fast.

Maintenance of Batteries
1. Thoroughly clean all battery surfaces of dust and/or dirt
accumulations.
2. Clean and tighten all terminal connections. Remove any
corrosion on battery terminals with bicarbonate of soda.
3. Clean battery studs and cable ends.
4. On stranded cable, if ends are corroded, cut off ends or
separate strands and clean internally.
5. Check electrolyte levels and specific gravity. Variations
of more than fifty (50) points between cells may indicate a
bad cell.

Maintenance of Inverters
1.Thoroughly clean the top and side surfaces of solar
controllers and inverters of dust and/or dirt accumulations,
using vacuum cleaners.
2.Regularly check/monitor the DC input voltage reading and
the AC voltage output of the inverters.
3.Regularly check/ monitor the temperature of the inverters
by touching their heat sink and/or enclosure.
4.Check all DC and AC wirings and all circuit breaker
protections.

Outsource Maintenance Service
You may be able to carry out many routine inspections
and maintenance tasks yourself. If, however, you are not
the do-it-yourself type, or if there is a major problem
with your system, you will need to locate a professional
to do the work.
The following pages is a partial list of SOLARSAFE
group installers/ maintainers of home solar systems. You
may contact the one near your locality.

PARTIAL LIST OF SOLARSAFE
INSTALLERS/ MAINTAINERS-1
SOLARSAFE DIRECTORY, as of January 2016
NCR & Rizal
Asuncion, Victor, 09175003576, Antipolo, hunterasuncion@gmail.com
Banayad, Chito chilab2005@yahoo.com
Barrameda, Joel RME/REE; jbbarrameda@yahoo.com, Land Bank of the Phils.
Cabreza, Lito tolitscc@yahoo.com
Calpotura, Karlo REE 0023452/ RME 0019171, karlocalpotura@yahoo.com
Carias, Leo S., 09178691126, Anonas St., Sta. Mesa, Manila, leoscarias@gmail.com
Cericos, Reydemto P RPCericos Inc., REE 12893, 09989988195, rpce_electrik@yahoo.com, GVR
Imelda ave cor Vista Verde Cainta Rizal
Chua, Gerry Solar Pinoy, Boni Serrano Ave, Crame, QC, 09228943779
Cruz, Ricardo REE; 09284355594; ricardocruz2006@yahoo.com

SOLARSAFE DIRECTORY, as of January 2016, continuation..
NCR & Rizal
Cruz,Timothy Joseph C. REE 49450, Sangandaan,Caloocan, 09214738428, imothyjoseph.cruz@yahoo.com.ph
Cuasay, Elmer C. RME 12320, elmerccuasay2gmail.com. +16919205459
De Guzman, Mike Solaric Phils, 09178613173
De Manuel, Leoncio,Jr; REE-43285, 2198 Fidel Reyes St, Malate,Manila,09232850290/jr_hlander@yahoo.com
Elecol Engineering Marikina City, 09175803348; 09255111144; 09088200582
Estardo, Leonel Calinawan Antipolo city, 09055962592, estardo_leonel11@yahoo.com
Evangelista, Jun M ame_architects27@yahoo.com
Fajardo, Leo REE, Elecol Engineering, Marikina City, 09175803348; 09255111144; 09088200582
Factor, Roselyn S. 46703 unit 5c lot 6 Teodora Cmpd Bambang Pasig 09182028827 rfactor@rocketmail.com
Feliciano, Mick, kuyogbubuyog@ymail.com solar enthusiast
Ferrer, Jun REE, dzune_1129@yahoo.com

NCR & Rizal
FEMP Safety Engineering 0943 0616 215/ 0929 555 2508, Tel (02) 646 95 16, pldt mobile (02) 73 69 159
Guevarra, Elmer ECE 019003, 470 Talipapa St. Caybiga Cal, 09499368567; (02) 7347345, guevarra.electronics@gmail.com
Ilustre, Wilchor, RME, Novaliches QC / whil_006@ymail.com
Javier, Rollie RME, 09257111691; j.rollie@yahoo.com
Lopez, Rick Jorge rjorgelopez43295@gmail.com
Malpaya, Junji, Quezon City, 09174493175, jiemalpaya@gmail.com
Mirando, Efren, caser, 09179783455, efrenmcaser@yahoo.com
Moctar, Cosarie M. REE49060/ RME39369, Pasig City, cosariem@yahoo.com, 09265644479
Nimis, Nestor, nestor@presguam.com
Ole, Frederick REE; 09213701962; frederick_ole@yahoo.com
Pangilinan, Jerry 09177975357, jrpangilinan@globe.com.ph
Rosal, Pepito Jr. REE, pepitorosaljr@gmail.com, Caloocan City

NCR & Rizal
Pangilinan, Phil REE, 09327188778
Peralta, Cornelio peralta_cornelio@yahoo.com
Peralta, ruel, Calbayog st. Mandaluyong city, 09223925775, ruelperalta_80@yahoo.com
Prilles, Nelson nbprilles@yahoo.com
Roldan, Neil supplier of deep-cycle batteries, 09174475988
Romano, MelvinREE, 09157938239, Marikina City – “SOLARSHARING”
Salacup, Julius REE 47599, julius_salacup@yahoo.com, Talon 3, Las Pinas City, 09271508577

NCR & Rizal
Sanchez, Claro PEE003325, claroboys@gmail.com 626-A Sancho Panza St. Sampaloc Manila
San Jose, Jerry, Solar Risk Management & Insurance, gerry_sanjose2000@yahoo.com
Santiago, Laila 09473141403, Eastwood Greenview, Montalban,,gilbertlailasantiago.commercial@gmail.com
Sayson, Elmer Architect 23504, sayson.architects@gmail.com
Sorita, Manuel Jr. Sta Barbara Villas1 Silangan San Mateo Riz 09223400679/09206787869, mdsoritajr2000@yahoo.com
Sumayang, Joel M joelsumayang@yahoo.com.ph QC
Vargas, Ariel M arielmvargas@gmail.com
Villacorta, Benjie N REE 794/ benjienv@yahoo.com, Malabon City

Northern Luzon
Abad, Jaime R REE; 09062512573, Baguio City, j_r_abad@yahoo.com
Binay-an, Julius REE/RME, 36738 / 30935; Loakan, Baguio City; 09485377879; jholz1248@outlook.com
Manipon, Melanie, Santa Fe, Nueva Vizcaya; REE-42610, mhelmanipon@yahoo.com
Palmares, Jose, Jr, 09177338282, 25 pine st. Rosales Pang., Josepalmaresjr@yahoo.com
Central Luzon
De Leon, Crisanto DA, 187 Brgy Dampol, Plaridel, Bulacan, 3004, email add: chris_ngcindustrial@yahoo.com
Laquindanum, Arnel P PEE/ RMP, 09329850810 / arnhelle@yahoo.com.ph, Malolos, Bulacan
Remegio, Joel E RME, jremegio@yahoo.com Meycauayan, Bulacan; 0939 606 4467
Salamanca, Chrysler A, REE 0028520/ RME 0023955, Poblacion Sur, Mayantoc, Tarlac, +63 919 570 7425

Southern Luzon
Agellon, Irome Harize O. RME, iromeharize@gmail.com, 09464019548, Mabitac, Laguna
Ansay, Jaime U, B2 L12 ceris 3, canlubang, calamba, laguna, 09294344468, jaimeansay @ yahoo.com
Balatucan, Abner B. Jr. RME 0025898.Blk.26 lot 24 Amaia Scapes Laguna, Barandal Calamba, balatucanjr.abner@yahooo.com, 09296012402
Bandao, Mohamadzali G REE 0031558, Sta. Cruz, Laguna, 09062735256, janmczeal@yahoo.com.ph
Barlaan, Romeo D 110 dao st. 4c San Jose Village Binan, Laguna, romy_barlaan@yahoo.com, 09212412398
Corpuz, Arnel REE / RMP; 09175284635; Pacita Biñan, Laguna; arnelcorpuz@gmail.com
Daraug, Jeffrey, Dasmarinas, Cavite, 09097010222, jpdsolarhertz@gmail.com
Daraug, Romulo M Sunnycrest Vill.Salitran-2 Dasmarinas,Cavite, RME 009256, daraugrmsolarhertz@gmail.com, LL : 046 4819 033
De Leon, Irwin Ponce, 470 rizal ave..puerto princesa city, Irwinponcedeleon@yahoo.com
Ducay, Mhon T RME/RGE, filomenoducay@gmail.com, +639753304504, Cavite
Opilla, Ernesto T REE 21616, CEL #09169757699, Cavite
Pulanco,Ramil Nicodemus RME 39243, rialmp2000@gmail.com, blk 61 lot 34 Palao Canlubang 4028 Calamba city, 09053384822
Recto, Precious RCE, pjbrecto@gmail.com, Lucban, Quezon
Safred, Donato, RME #018852/ RMP, Tayabas, Quezon

Bicol Region
Barrameda, Joel RME/REE, jbbarrameda@yahoo.com, Bacacay, Albay
Bugtong, Jigger F REE, Naga City, 09175802138/ 09228602716
Elecol Engineering Naga City, 09175803348; 09255111144; 09088200582
Fajardo, Leo REE, Naga City, 09175803348; ; 09255111144; 09088200582
Flores, Casimiro, Jr., RME; clfjr2005@yahoo.com, OSH Safety Practitioner/ Safety Officer/ Naga City
Lorenzana,Mary Marlyn B. CE/ Daet, Camarines Norte ; mmm_ebl@yahoo.com.ph
Pahugot, Clifford RME 0037348, Aroroy, Masbate, fordcliff4d@yahoo.com 09272340845
Romano, MelvinREE, 09157938239, Albay – “SOLARSHARING”
San Andres, Balbino, Jr., Naga City, Camarines Sur, balbinoree@yahoo.com

Western Visayas/ Central Visayas/ Eastern Visayas
Canu-og, Niel B REE 13808, nielcanuog@yahoo.com; 0922-8475185; Cebu, City
Caragos, Melmar RME, MDC Electrical Supplies & Services, Roxas City, Capiz...mdc_1023@yahoo.com
Gambuta, Martin C RME-37865, CPG East Ave. Tagbilaran City, arch.martin_gambuta@yahoo.com, 09468753551
Osano, Chris 12 V. Aldecoa Road, Dumaguete City, 09287589020, osano_888@yahoo.com
Olavario, Blandino, Jr, 09061679107, Calbyog City, Samar
Viñ as, Darwin CE/RMP; Oslob, Cebu; darwinvinas@ymail.com; 09436441617
Western/ Northern/ Southern Mindanao
Asa, Abdulnor A. REE/ RME; NPC Jolo DPP Jolo Sulu...aaa_nur_asa@yahoo.com
Bagamano, Ramil PEE, Bukidnon/ Davao; 0922 8700 698
Dalena, Neil S. Farmers Drive, Gov Ramos Ave. Brgy. Sta Maria, Zamboanga City +63 917 555 8984
Madahan, Bienvenido C Compostela Valley, Davao, 09489317399
Recto, Precious RCE, pjbrecto@gmail.com, Bukidnon
Saavedra, Bobby Zamboanga City, 0917 559 1796; 0918 921 6578

Thank you & Good luck!
If you need further help, my contact numbers are:
0943 0616 215 / 0915 292 8668 / 0929 555 2508 /
pldt mobile 73 69 159

Solar for the home installation and maintenance-20161

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