ENERGY TRANSFORMATION FOR FUTURE

Business Structure Trading

Energy Industrial

Investment

Compressed Bio-Methane Gas

(CBG) - 11 Projects at the North

Petroleum Production Project

(PPP) – in Sukhothai

Renewable & Alternative Projects

Associated Company

Bangchak Biofuel

(BBF) (UAC : BCP = 30% : 70%)

Subsidiary Company

UAC Hydrotek ( UAC : Hydrotek )

(50.003% : 49.997%)

Water Treatment Projects

Water Supply Projects

UAC&TPT Energy (UAC = 100%)

CBG 10 projects at the North

Eastern

Listed in MAI

THE FIRST CBG IN THAILAND

Established 2010, Investment Cost 180 Million Baht (100% UAC)

Plant location Mae Tang, Chiang Mai

Capacity CBG : 6 ton per day

Fertilizer : 25 ton per day

Customers PTT (contract signed for 15 years)

Technology Biogas: Rescom Engineering GmbH

Biogas Purification: UOP

Status Start Production Since February 2013

THE FIRST CBG IN THAILAND

GRAND OPENING DAY

February 15, 2013 by Thai P.M.

Gas Purification unit

Fertilizer

Recycle Water

Sludge Separator

Mixing

Biogas

Fertilizer

1. Pig manure 700 m3/D, 1-2% solid

2. Napier Grass Silage 15TPD

Current 40 acres and increasing to 160 acres

Compositions Typical UAC

Methane 50-60% 60-72%

CO2 25-40% 25-35%

Water 0-5% 0-3%

N2 0.01-2% 0.01-0.5%

O2 0.01-0.6% 0.01-0.2%

H2 0.1% -

H2S 3000 ppm 800 ppm

No.

Requirement CBG Spec. CNG Spec.

1 Water Dew Point at 20,000 kPa - 15 C Max 9.2 C

2. Hydrocarbon Dew Point at 4500 kPa

- 65 C Max 15.5 C

3. Wobbe Index 39-41 MJ/m3 37-42 MJ/m3

4. Methane Number 101 Min. 65

5. Hydrogen Sulfide max 23 mg/m3 Max 23 mg/m3

6. Hydrogen max 0.1% vol. Max 0.1% vol.

7. Carbon Dioxide max 18% vol. Max 18% vol.

8. Oxygen max 1% vol. Max 1% vol.

9. Sulfur max 50 mg/m3 Max 50 mg/m3

LOCAL ALTERNATIVE ENERGY FROM WASTES REPLACE CNG IN REMOTE AREA SUSTAINABILITY – LONG TERM PROJECT

TOTAL WASTE MANAGEMENT SOLUTIONS

BETTER INCOME TO FARMERS WHO GROW NAPIER GRASS

UAC have decided to develop another 10 new CBG projects at the same capacity (6TPD of CBG) using Napier grass silage. New plants will be located in the northern part of Thailand. UAC have set up a JV with TPT to set up another 10 new CBG projects in

northeastern part of Thailand

New 20 CBG projects in 2013-2015

Capacity/plant CBG: 6TPD

Organic Fertilizer: 25 TPD

Raw Materials Napier Grass 100 TPD

CAPEX 100 million Baht per plant

Total 2 billion Baht

Funding EPPO Fund 10% Equity 40% Bank 50%

Project Status

Doing Engineering Design and will start the civil

construction by 3Q 2013 for the first two plants

All 20 projects will be completed by 1Q 2015

Technology Germany, USA and Thailand