SOUTH AFRICAN CLEAN ENERGY SOLUTIONS LIMITED Registration Number: 2007/022753/06

Address: 101 Oxford Road, Saxonwold, 2132, Johannesburg Phone: +27 11 530 9500; Fax: +27 11 530 9551

Directors: J. Rampedi (MBCHB), M. Antonie (BALLB), J.D. Kruger, L. Van Wyk B.Com CA (SA), C. T. Wood

www.saces.co.za

Introduction to SACE

SACE

Company Overview

Project Division The project division of SACE is responsible for everything from identifying potential clients and viable

technologies, to complete project implementation. We assist our clients in the initial phases of a project i.e.

pre-feasibility and feasibility studies through each step including project planning, project financing, project

management and plant operations.

Technical

The Project Division’s technical team assesses the capability, maturity and relevance of various

technologies as applied to an identified business opportunity. Once a specific opportunity has been

identified, the team determines whether a given technology can meet the technical requirements in that

specific context.

With a background ranging from in-house system development, advanced research, experimental

analysis, computer aided design, to project management and client relations, the technical team

approaches each opportunity professionally, efficiently and responsibly.

Management

The managerial team of the project division has extensive experience in the implementation of a variety of

commercial projects. Counting on their entrepreneurial experience, they can setup and execute projects of

any size, identify pitfalls early and coordinate all the role players in a project effectively.

Finance Division With experience in the merchant banking industry spanning decades, the role of the financial division

members is threefold.

Firstly, to lend their expertise to the technical division when new potential projects are being analysed on a

financial level. Secondly, to ensure that sound financial strategies and agreements are in place when

undertaking any new project. Thirdly, to secure funding for projects where needed, subject to

aforementioned financial strategies.

SACE

Technologies and Services

SACE is constantly investigating the renewable energy market to find the latest proven technologies. Over

the years the company has formed several lasting partnerships, giving our clients access to an array of

solutions to their power problems.

With a specific focus on generating clean energy from renewable sources to supplement our client’s

energy requirements, the company strives to guide our clients through the uncertain times regarding

stable power supply.

Waste-to-Energy Choosing from one of the following technologies, or combination thereof, electricity is generated from

waste products and made available directly, or through the transmission network, to our clients.

Gasification

This technology is capable of turning pre-treated biomass into both thermal and electrical energy. SACE

has access to cutting edge technology in the field of Gasification allowing an economical solution in many

cases where other technologies would fail. This technology is specifically very attractive to the forestry

industry.

Figure 1: A 180 Nm3/h Gasifier installation

Microwave

Using advanced technology from the leading suppliers of such systems, microwave technology can turn

the waste products such as scrap tyres or waste plastic into valuable base components, such as fuel for

combustion engines, carbon-black for new product manufacturing and steel for recycling. With the current

focus in South Africa again being turned to scrap tyre recycling, SACE has performed an extensive

investigation of the available technologies to determine the preferred supplier for the South African

market.

SACE

Figure 2: By products produced by Microwave process from scrap tyres

Plasma

Operating at very high temperatures this technology requires virtually no pre-treatment of waste. It can

handle most waste types and effectively destroys all the input waste, turning it into energy (electrical or

thermal) and a vitrified slag in a very clean process.

Figure 3: Schematic of Plasma process

Process The standard process for a Waste-to-Energy project follows the following steps:

1) Gathering of information from Client

2) Produce pre-feasibility on various technologies to establish viability

3) Gain approval for project from SACE Executive Board

4) Present Client with possible options for feasibility study

5) Produce feasibility study including bankable document showing technical and financial analyses

6) If project is approved by Client and SACE Executive Board, start process to gather finances

7) Procure new equipment and execute project – either through joint venture or own & operate

8) Perform project management and budget control to ensure successful project

9) Continued monitoring to ensure Client satisfaction

SACE views these steps as guidelines only and has a very flexible approach to dealing with our clients.

SACE

Solar Energy Solar power is the conversion of sunlight into electricity, either directly using photovoltaics (PV), or

indirectly using concentrated solar power (CSP). Solar heating is the process of heating water (or some

other medium) through a solar thermal collector. Both of these technologies are used to alleviate the base

load of a client’s energy requirements.

Solar Geysers

Solar Water Heating (SWH) is a well-established technology with records of solar collectors in the USA

dating back to before 1900. With the recent advances in the mass production of collectors and with

ESKOM’s rebate programme, SWH can compete strongly with grid power in terms of costs.

SACE’s has a strong partnership with Mavava Solar who manufacture high quality stainless steel geysers

with 85% local content.

Figure 4: Sample installation of Mavava Solar low pressure geyser

Photovoltaic Solutions

Using a semiconductor that exhibits the photovoltaic effect, PV panels are able to transform solar radiation

into direct current electricity. PV capacity is growing rapidly worldwide and currently supplies

approximately 0.5% of global electricity demand. Due to South Africa’s favourable solar irradiance profile,

the steady decrease in manufacturing cost of the panels and the sudden increase in ESKOM power

pricing, PV is becoming competitive with conventional electricity sources.

Through various partners, SACE has access to all relevant photovoltaic (PV) technologies including PV

panels, battery systems, inverters and power control systems. Combining these technologies with solar

geysers can almost completely remove daytime energy requirements from municipal power supply.

Our EPC technology partners have more than two decades of local experience with PV solutions,

procurement and installation.

SACE

Figure 5: Example of rooftop PV installation

The Process

The process of retrofitting usually follows the following steps:

1) Install intelligent metering and perform power audit

2) Study power profile in detail to determine specific problem areas

3) Design system to address problem areas using applicable technologies

4) Setup financial review of system to calculate savings and payback periods

5) Procurement and installation of new equipment

6) Continued monitoring to ensure client satisfaction

Throughout the process SACE is committed to keep our clients informed of progress and to ensure proper

management of the project.

Research and Investigation Besides SACE’s existing collection of available technologies, we have the ability to find and investigate

other technologies for our clients and determine the financial and technical viability of such technologies.

This research is usually done in the form of a feasibility study, which would typically become the property

of the client.

Conclusion With various technologies and services available, SACE can offer tailored solutions to our clients with

regards to any energy problems. While ESKOM remains an unreliable source of energy, it is becoming

more and more imperative for companies to invest in other sources of energy and to use their current

supply efficiently. SACE can assist our clients in achieving this goal.