Your manufacturer for premium vacuum tube collectors

U.S. Crude Oil* PricesJan. 2005 through Sept. 2009

Jan

2005

Jul 2

005

Jan

2006

Jul 2

006

Jan

2007

Jul 2

007

Jan

2008

Jul 2

008

Jan

2009

Jul 2

009

$ 0

$ 20

$ 40

$ 60

$ 80

$ 100

$ 120

$ 140

$ 160

02 s-power

Drastic increases in oil and gas prices together with uncontrolled environmental pollution demand innovative and efficient systems for heating and cooling. Despite the temporary fall in oil prices the price of crude oil has risen about 300 percent in the last ten years. In the following examples we assume a price increase of fifteen percent a year. High performance with TPS inside clearly pays off both economically and environmentally.

The Advantage of High Performance Vacuum Tube Systems At A Glance:

A. Economic Efficiency Through Precision Technology With TPS Inside:Triple Power System inside

1.) Vacuum Technology:

2.) Nano-Anti-Reflex Coating:

3.) Absorber coated on both sides:

B. More Heat Yield, Especially In Winter During Cold SeasonsThis image demonstrates the heat loss of a vacuum tube coll-ector with the NARVA High performance tube on the left and a flat plate collector on the right. The vacuum technology found in the System provides optimum insulation which transfers the heat directly into the system, resulting in a higher efficiency factor.(see page 7 for a more complete comparison)

-7,3 19,3-5 0 5 10 15Temp in °C:

* heating with oil

For additional examples please visit: s-power.de

C. Projected Savings of Heating Oil With A 15% Price Increase Per Year

Single Detached Home

Hotel

4 mil. outdated heating installa-tions (each 12,000 kWh per year)*

12,000 kWh

3 Mil. kWh

480 bil. kWh

$ 33,750

$ 843,750

$ 135 billion

3.2 tons

798 tons

128 mil. tons

Object: Heating support with the High Perfor-mance Collector

Approx Savings in 10 Years:

kWh Dollars CO2

s-power 03

2 2

"I‘d put my money on the sun and solar energy. What a source of power! I hope we don‘t have to wait until oil and coal run out before we tackle that."

Thomas Edison, 1847 — 1931

10 Advantages of High Performance Collector:

Made in Germany

A 50 percent higher output possible compared to a flat plate collector especially in winter.

A 50 percent labor cost reduction is possible with the assembly by means of the vacuum tube plug-in connection (one person can assemble without difficulty).

100 percent savings in installation materials. (Installation kit is included free-of-charge.)

Substantial savings on flat-roof construction because the NARVA High Performance tubes can be angled towards the sun. No on-roof construction on flat roofs is necessary for the High Performance vacuum tube collector

Installation on a façade in snowy climates is possible because the vacuum tubes can be angled towards the sun.

Payback of energy used for the production of the collector is less than one year due to the high degree of efficiency.

Return On Investment (ROI) is approximately 6 to 8 years for a homeowner.

NARVA High Performance vacuum tubes are used exclusively (recipient of the German Otti-Innovation award in 2008).

TPS inside = Triple Power System inside

1

2

3

4

5

6

7

8

9

10

1.) Vacuum technology

2.) Nano-anti-reflex coating

3.) Absorber coated on both sides

U.S. Oil PricesJan. 2005 through Sept. 2009

Jan

2005

Jul 2

005

Jan

2006

Jul 2

006

Jan

2007

Jul 2

007

Jan

2008

Jul 2

008

Jan

2009

Jul 2

009

$ 0

$ 20

$ 40

$ 60

$ 80

$ 100

$ 120

$ 140

$ 160

It‘s worth installing a solar heating system!Oil and gas prices cannot be calculated with any certainty, so the first priority is independence from fossil fuels. With the high performance systems you achieve top results and can achieve return on investment (ROI) in 6 - 8 years given a price increase of only 15 percent per year. Oil prices rose by approximately 300% from 1998 to 2008. A barrel cost approximately $10 in 1998, approximately $100 in January 2008; in June 2008 it was already $140 and it has now fallen again to approximately $60. It feels as if oil became cheap at the end of 2008. However, if you consider that this value is still 300% higher than it was in 1998 there can only be one decision: Get as far away from dependence on oil as possible to gain cost reliability. You can then determine what your costs will be in 10 years and that gives you security!

High Performance Vacuum Tube Collector Higher energy yield through precision engineering

2. Nano coating increases the transmission (up to 96%) and prevents weathering of the glasssurface

Absorberis connected to heat-carrier tube with ultrasonic welding

1. Vacuum technologyprovides highly efficient heat insulation

D

Ends of the vacuum tubes are embedded in the lowerend rail

Tube spacingis consistent, even when installing multiple s-power collectors in succession

Mounting railsincluded in the collector,hence a self-supportingconstruction

Low liquid volumehence faster energy conversionCollector engineered and

manufactured in Germany

Direct flowvacuum tube systems

Solar heat processingAlso suitable for hightemperature ranges

04 s-power

2 2

B

Easy access to the header via click system

A

Rotating vacuum tubesVacuum tubes are individually angled toward the sun. The variable mounting capabilities of the collectors (horizontal, vertical, and flat assembly) requires no extra cost for roof mounting

Insulation materials in header ensureminimum heat loss

C

Plug-in tube connectionVacuum tubes are easilyinterchangeable

Easy mounting kit systemwith step-by-step instructionsmakes installation easy for oneor two people

Short-term productionenergy paybackThe energy amount used for manufacture can be realizedin less than a year due to the high degree of efficiency

3. Absorber coated on both sidesproducing higher efficiency with the absorption of diffused and reflected radiation

Direct flow vacuum tubescome in standard 2 meter lengths

Highly resistant to hailbecause of special glassproperties and thickness

Patented glass-to-metal connection protects the vacuum long term

Direct flowvacuum tube systems

s-power 05

06 s-powerT

EC

HN

ICA

L D

ATA

s-p

ow

er 1

0 10

00 +

s-p

ow

er 2

0 20

00 +

s-p

ow

er 3

0 30

00

s-p

ow

er H

P 1

0 10

00 +

s-p

ow

er H

P 2

0 20

00 +

s-p

ow

er H

P 3

0 30

00

Features - Direct Flow and Heat Pipe: Vacuum tubes and collectors are quality "Made in Germany" products

Vacuum tubes manufactured by NARVA won the German OTTI innovation award

Vacuum tubes have superior performance due to an anti-reflection coatingon the glass

High impact resistant glass has been tested for resistance to breakage due to hail

Patented glass to metal seal is made by NARVA who has over 40 years of experi-ence in glass to metal sealing technology

NARVA guarantees the integrity of the vacuum for 10 years

Vacuum tubes are quickly attached to the header using a nut and ferrule

Vacuum tubes can be rotated to be precisely positioned to the sun

The same tube separation can be maintained while connecting several modules

The collector construction is self supporting construction

Simple connections from the vacuum tube to the header

Light weight

Low liquid volume

Low pressure losses

Low heat losses due to connection-plus technology

Low heat loss values for each tube connection

Short payback times

Breakeven is possible in 6 to 8 years

* Data from TÜV reports # 21209370-5 and # 21209370-30

Technical Data*: 2 2 3 3

Weight - Direct Flow 59 lbs. 117 lbs. 177 lbs.

Length - Heat Pipe 85.2 in. 85.2 in. 85.2 in.

Width 28 in. 58.8 in. 84 in.

Depth 3.25 in. 3.25 in. 3.25 in.

Gross surface area 17.2 ft² 34.4 ft² 52.4 ft²

Performance** 0.84 − 1.01 kW 1.69 − 2.01 kW 2.53 − 3.01 kW

Aperture area 15.8 ft2 31.7 ft2 47.4 ft2

Number of tubes 10 each 20 each 30 each

Max. operating pressure 145 psi 145 psi 145 psi

Inspection pressure 220 psi 220 psi 220 psi

Max. stagnanation temp. 570 °F 570 °F 570 °F

Fluid volume - Heat Pipe 16 oz. 32 oz. 48 oz.

Fluid volume - Direct Flow 46 oz. 92 oz. 138 oz.

Weight - Heat Pipe 53 lbs. 106 lbs. 159 lbs.

Length - Direct Flow 84 in. 84 in. 84 in.

06 s-power

** with a solar radiation of 1.0 — 1.2 kW/m² depending on the amount reflected radiation

s-power 07s-power 07

Heat ImagesFor The Demonstration of Heat Loss

The heat image shows temperature in C°: -7,3 -5 0 5 10 15 19,3

This image demonstrates that NARVA vacuum tube technology offers a clear advantage in com-parison to a flat plate collector, especially in winter. Heat is transferred directly to the furnace system and not, as seen with flat plate collectors, passed onto the ambient area or air.

Legend: Conventional Flat plate Collectors Vacuum tube collectors with the thermos bottle principle (Sydney)

vacuum collectors with the direct flow NARVA vacuum tubes

Comparison: Efficiency of different collectors systems equipped with NARVA vacuum tubes offer clear advantages in comparison toflat collectors and the Sydney vacuum tube system collectors:

0 10 20 30 40 50 60 70 80

0,9

0,8

0,7

0,6

0,5

0,4

0,3

0,2

0,1

0

Temperature Difference/K

ETA

08 s-power

Development and Marketing, Inc.

Industriestrasse 24-2749716 MeppenGermany

Phone: +49 5931 88388-0Fax: +49 5931 88388-99

E-Mail: info@s-power.deInternet: www.s-power.de

The Principle of a solar thermal installationExplanation of the construction and the method of operation

Solar thermal installations consist of a solar collector on the roof, a control unit with a pump and a potable water storage tank.

The solar collector absorbs the heat from the sun‘s radiation (infrared and UV) and transfers it onto the solar liquid (transport medium) which heats the water in the potable water storage tank.

Sales Partners:

Proterra Solar470 Industrial AvenueWoostock, Ontario N4S-7L1

NTS Solar233 Libbey Industrial ParkwayWeymouth, MA 02189

1-888-781-4545 U.S.1-888-553-5505 CANADA