Distributed Solar Power System

Profile

Sunlight Eco-tech Limited is a company that provides

customers with energy conversion systems and solutions to

improve energy efficiency. We offer clean energy such as

solar power generation, energy-saving products making use

of molecular coating technology, smart grids and green

efficient transportation.

Our goal is to make the most using the least:

To increase energy efficiency without increasing cost.

Making use of less resources and cause the least damage in

exchange for more energy supply and efficiency.

What is distributed solar power generation?

The distributed photovoltaic generation grid-connected system

refers to the use of photovoltaic modules to convert solar energy directly

into electricity and transmission to grid. It is a way of comprehensive

utilization of power generation and energy with broad development

prospects.

With many years experience in product design major, our

photovoltaic system has the following advantage:

• We use the self-cleaning nano photocatalyst technology into solar

panel. This method will reduce cleaning costs and increase the

power generation efficiency.

• Pv module conversion rate approached 23.5%, which took the

leading position in this field.

• The unique design ensured the PV module could maintain high

power generation efficiency when the illumination is uneven.

Composition of a distributed solar power system

Independent Photovoltaic System Structure

Controller

Solar Cell Array

Battery Pack

Inverter

DC Load

AC load

Independent photovoltaic system diagram

Grid-connected Photovoltaic System Structure

Solar Cell Array

Connector Open network inverter

Household load

GridBuy electricity meters

Sell electricity meters

Photovoltaic power generation system diagram

CityNational

finance

Provincial

subsidies

Municipal

subsidiesTotal Note

Beijing 0.42 / 0.3 0.72

Shijiazhuang,

Hebei0.42 0.2 / 0.62

Changsha,

Hunan0.42 0.2（10 years） 0.1（5 years） 0.72

Yichang,

Hubei0.42 0.25（5 years）

0.25（10

years）0.92

Guangzhou 0.42 / 0.2（10 years） 0.62

Hangzhou 0.42 0.1 0.1(5 years) 0.62

Wenzhou 0.42 0.1 0.3（5 years） 0.82

Shanxi

Jincheng0.42 / 0.2(5 years) 0.62

1.5 dollar/W

subsidies

Hong Kong 4 KDH / / 4 KDH/kW·h

Macau 4.8 MOP / / 4.8 MOP/kW·h

Unit：Dollar/kW·h

Application of self-cleaning nano photocatalyst

in photovoltaic project

Arid Desert Region◆ （Saudi Arabia）: Reduction of 26% to

40%◆ （Kuwait）: Decrease by 17%

Rainy area◆ （U.S. and Japan）: Decrease by about 5%◆ （Spain）: Decrease by 5%◆ （Italy）: Decrease 1.1% ~ 6.9%◆ （Mexico）: Decrease 4% ~ 7%

Effects of Dust on the efficiency of Photovoltaic Panels in different areas

Traditional methods of cleaning solar photovoltaic panels

Nepenthes

Super-hydrophilic surface

Less than 10 degrees

Super-hydrophilic（<10°） 、Super-hydrophobic（>150°）coatings are two different forms that can be made as self-cleaning slurries

< 90°>90°

Solar photovoltaic panels surface

Types of automatic cleaning slurries

A layer of titanium dioxide coating film.

Advantage:Through the photochemical action, the self-cleaning slurry with hydrophilic properties forms a water film on the glass surface, and the inorganic dust is washed away from the bottom.

1. Decompose organic oils by photocatalytic properties to make carbon dioxide and water.

2. Long lifespan

Disadvantages:1. Requires sunlight to activate

Nano-structured organic polymer or wax coated film layer

Advantages: Super-hydrophobic nature, water easily forms water droplets on the surface and removes dust by rolling off

Disadvantages:1. Unable to remove organic dirt2. High cost3. Manufacturing takes time4. Short lifespan

Super-hydrophobic automatic cleaning glass Super-hydrophilic automatic cleaning glass

15

17

Capacity：495kW　

Specifications：180W x 2,751pcs

Capacity：1,000kW　

Specifications：240W x 4,164pcs

Contact us

Sunlight Eco-tech Limited

Contact person：Eric Mak

Address：Room 507, Corporate Plaza, 5 Science Avenue West,

Hong Kong Science Park, Sha Tin, Hong Kong

Phone：(852) 3998 3439

Fax：(852) 3019 5871

Email：info@sunlight-eco.com