1. Copyright © 2010 The Alpha Group. All Rights Reserved. 2) Headends and Hubs

2. Copyright © 2010 The Alpha Group. All Rights Reserved. Photovoltaic Power System for DC loads Extra High Efficiency Photovoltaic Power System “PVPS” PVPS is a solar/power bay system that supplies DC power directly to the battery bank and DC load. Grid-tied, but continues to provide power in the event of an outage. Fully integrated. Ready for rapid deployment. Ideal for critical loads

3. Copyright © 2010 The Alpha Group. All Rights Reserved. Hybrid Power Systems - “HPS” PV Array Wind Turbine(s) Alpha Group DC Power Plant: Charge Controller, Cordex (Rectifier and Inverter optional) Battery Bank Customer AC Loads Customer DC Loads Generator(s) Hybrid Power System “HPS” For maximum power reliability, incorporates: Solar Battery And/or generator And/or wind turbine Designed for larger loads providing DC and/or AC output Custom Engineering

4. Copyright © 2010 The Alpha Group. All Rights Reserved. Case Study: Leading European MSO Purchased over 300kw of PV power from Alpha –80% went into Office installations Corporate and Sales –18% went into Headend and Hub site locations but using AC grid tie power to take advantage of high European feed in tariffs –2% Experimented with low load network powering locations. Was very hard to impossible to find locations to make this happen

5. Copyright © 2010 The Alpha Group. All Rights Reserved. 3) Network

6. Copyright © 2010 The Alpha Group. All Rights Reserved. Applying solar down in the network To go fully off grid: –Pricey: $18,000+ to go full off grid and not connect to the utility, Difficult to find enough space, rights of way –Vulnerable to theft –Lots of batteries Can be used to defer power costs –Can start to shed load for 1500$ on up –Projects in europe with one or four panels and a small charge controller Panel installation permissions were the biggest issue Can have a decent payback

7. Copyright © 2010 The Alpha Group. All Rights Reserved. Hybrid CableUPS in a Fibernode Power Enclosure (FPE) Nodes

8. Copyright © 2010 The Alpha Group. All Rights Reserved.

11. Case Study: Remote Cell or Microwave sites: Sierra Vista, AZ Cell Repeater The Choices: –High Capital Cost Contract with the utility to install distribution –High O&M Cost LP Generator with regular maintenance –Best Life Cycle Cost Solar power system with generator backup Alpha’s HPS arrives at the site fully tested and ready for deployment.

12. Copyright © 2010 The Alpha Group. All Rights Reserved. Case Study: Low power transmission sites: Cisco Wireless Mobility Alpha Technologies Model number MPS30-48CSL is a 48VDC Uninterruptible Power Supply Supporting Cisco Aironet 1500 radios for Outdoor Mesh Networks

13. Copyright © 2010 The Alpha Group. All Rights Reserved. Payback Analyses for a Photovoltaic Power System in the Caribbean

14. Copyright © 2010 The Alpha Group. All Rights Reserved. System Description $100,000 USD Estimated Upfront Cost for a 26.0 kW Alpha PVPS Roof-Mount Racking; PV Array Tilted at a 10° Angle due South Produces ~50,000 kWhs annually Installation, taxes, and shipping charges not included in estimated cost

15. Copyright © 2010 The Alpha Group. All Rights Reserved. Exception and Clarifications on Study  Weather data used in analysis was from Aruba.  Used various electricity rates in $0.10 increments, with an annual 4.0% cost /kWh escalation.  Assumed system would be installed at the beginning of the year.  Output degradation from the modules was estimated to be 0.5% annually.  NPV was calculated with a 7.0% discount rate over 20 years.  IRR was calculated over 20 years.  Following graphs show simple payback (revenue and costs per year) pre-taxed. Does not take inflation into account.  No costs due to taxes, shipping, installation or maintenance were included in analysis.

16. Copyright © 2010 The Alpha Group. All Rights Reserved. Payback Models with Varying Electricity Rates

17. Copyright © 2010 The Alpha Group. All Rights Reserved. Thank you for your time.