What does voltage optimisation do What is Voltage

What does voltage optimisation do?

What is Voltage Optimisation?

What do the Experts say? “A 230 V linear appliance used on a 240 V supply will take 4. 3% more current and will consume almost 9% more energy …” and “… only achieve 55% of its rated life” Savings with Voltage Optimisation completely depends on the load the company has and therefore a full site survey is essential.

Why is it important to optimise site voltage? In addition, VO helps with Targets, obligations, pressures… § Reduce k. Wh § Reduce CO 2 § CRC, CSR § Save money

How does Voltage Optimisation help? Reduces k. Wh Consumption

Will everything consume less energy? § NO not everything … § Greatest savings come from inductive loads (Motors, Lighting) § Some loads will yield less savings (VSDs) § Some loads will yield zero savings, but will benefit in other ways It is important to understand the electrical loading characteristics of your site. § § Remember no two sites are the same

Installation

Optimise at HV side or LV side? The diagram below shows a typical onsite plant room set-up, without any voltage optimisation technologies being utilised

Optimise at HV side or LV side? The diagram below shows the same typical plant room set up, but highlights where Powerstar voltage optimisation technologies can be installed on either the HV or LV supply High voltage side POWERSTAR HV MAX: An amorphous core super low-loss transformer with integral voltage optimisation and electronicdynamic regulation Low voltage side POWERSTAR VOLTAGE OPTIMISATION Powerstar voltage SYSTEM: optimisation Available in fixed or system, available in electronic-dynamic fixed or electronicvariations dynamic variations

Case studies and testimonials

Guoman Hotels Group Ltd – Thistle Hyde Park • Total before (k. Wh) (24 days) • Total after (k. Wh) (24 days) • Savings (k. Wh) • % Savings • Annual savings based on 8 p/k. Wh 34355. 3 25403. 8 8951. 5 26. 1% £ 10, 891 “So far the Powerstar installations in our hotels have achieved as much as an amazing 26. 1% saving in total electricity consumption at our Thistle Hyde Park Hotel and elsewhere, never less than an 11. 5% saving. ” David Hannah, Head of Property, Guoman Hotels Group Ltd

Department for Business Innovation & Skills Seven Powerstar units were installed into BIS, the results of five of these installations are shown below. Two of the units currently have no data for savings as BIS changed the meter and have not had data since. Annual energy consumption reduction and cost savings • Unit 1: • Unit 2: • Unit 3: • Unit 4: • Unit 5: 24. 7% reduction / £ 8, 067 saving 11. 3% reduction / £ 3, 391 saving 13. 65% reduction / £ 4, 537 saving 8. 59% reduction / £ 6, 598 saving 6. 2% reduction / £ 8, 204 saving

NHS – Ashworth Hospital The hospital were looking for a reliable system to effectively reduce high energy costs and consumption caused by lighting, plant & IT equipment in the hospital. Following the installation of four Powerstar units the hospital is benefiting from the following savings: • Savings (k. Wh) • % Savings • Annual savings • Payback period 458, 272 12% £ 51, 213 3 years

Derby City Council is aiming to reduce its carbon emissions by 25% by 2013/14 as part of a ‘Climate Change Strategy’. The Council’s Eagle Centre market, Environmental Services parks management depot and the Market Hall have had Powerstars installed. • Savings (k. Wh) • % Savings • Annual savings • Emission Reductions 128. 972 14. 6% £ 10, 000 69. 2 tonnes

TEV Ltd Two Powerstar units creating a 125 k. VA system were installed at TEV to optimise the incoming supply to the factory. As a result an actual reduction in electricity consumption of 17. 8% was achieved. • Total before (daily) 857. 8 k. Wh • Total after (daily) 704. 9 k. Wh • Savings (k. Wh) 153. 1 k. Wh • % Savings 17. 8% “The installation of the Powerstar systems has cut our energy cost by nearly 20%” Chris Chisman, Engineering Manager, TEV Limited

University of Surrey The University of Surrey has held sustainability at the heart of its CSR agenda for over a decade. The campus is home to 17, 900 students and 2, 597 staff and views investing in sustainable technology as a critical component. • Savings (k. Wh) • % Savings • Annual savings • Payback period 189, 474 8. 1% £ 13, 911 3 years

London City Hall Home of the Greater London Authority accommodates the Mayor of London, the London Assembly and 600 or so permanent GLA employees. . % Savings: 13. 6%

Can we help? YES, we can… If you are not sure what to do to reduce your energy consumption, contact us and we can organise a free no-obligation proposal. Call us on +44 (0)1142 576 200 or e-mail us at powerstar@ems-uk. org

Civic Offices n Installed ~2008/9 q n n Large office building with considerable amounts of LF Lighting and various pumps, fans etc. Paid for through corporate Invest to Save fund Expected 10% saving Achieved: uncertain as new data centre installed around the same time but very likely exceeded 10% Has now been removed as building sold - will be relocated to suitable building

Oakengates Leisure Centre n Installed 200 k. Va unit in 2010 q n n n Leisure centre with large swimming pool with considerable amounts of LF Lighting and pool equipment including AHU, pumps, fans etc Paid for through Salix – 0% Loan Expected annual saving of 32, 000 k. Wh (~9%) leading to 4 year payback Achieved: uncertain as building extended at the same time. Likely exceeded 10%

Oakengates Theatre n Installed 288 k. Va unit in 2011 q n n Mixed use building. Primarily theatre but also children's centre. Large AHU unit with pumps, fans etc. Paid for through Salix – 0% Loan Expected annual saving of 25, 000 k. Wh (9. 3% - guaranteed) leading to 5 year payback.

n 11 Fe b 1 M 1 ar -1 1 Ap r-1 M 1 ay -1 1 Ju n 11 Ju l-1 1 Au g 11 Se p 11 O ct -1 1 N ov -1 D 1 ec -1 1 Ja n 12 Fe b 1 M 2 ar -1 2 Ap r-1 M 2 ay -1 2 Ju n 12 Ju l-1 2 Au g 12 Se p 12 O ct -1 2 N ov -1 D 2 ec -1 2 n Ja Oakengates Theatre – AMR Achieved savings – 27, 063 k. Wh year on year (~£ 3, 200) Consumption- k. Wh/month 30000 25000 20000 15000 10000 5000 0

Contact Details n Please contact Elliot Jones – Sustainable Development Officer n email: elliot. jones@telford. gov. uk n Call: 01952 384225