Enemmän ICT:tä, vähemmän päästöjä

Virransäästöautomatiikka pienentää sähkölaskua




Kuva: Elisa Oyj

Henkilökohtaisten työasemien ja niihin liitettyjen oheislaitteiden, kuten tulostimien ja kopiokoneiden, tarpeeton sähkönkäyttö aiheuttaa vuosittain yksinomaan julkishallinnossa jopa 10 miljoonan euron ylimääräiset kustannukset (Motivan selvitys vuodelta 2007).

Kun tietokoneen virransäästöominaisuus aktivoidaan, koneen virrankulutus puolittuu. Kun henkilökohtaisen tai verkkoon kytketyn päätteen käyttäjän huomio siirtyy muualle, näyttö uinahtaa annetussa määräajassa lepotilaan. Se säästää virtaa, ja laitteisto tuottaa vähemmän lämpöä. Näyttö avautuu muutamassa sekunnissa, kun käyttäjä hipaisee hiirtä tai näppäimistöä.

Esimerkkejä:
Esimerkki 1, Microsoft: Windows Vista - Powering Down Grows Up
Esimerkki 2, Ravensoft:Virransäästöautomatiikka pienentää IT- sähkölaskua kouluissa

Esimerkki 1, Microsoft: Windows Vista - Powering Down Grows Up

"IT administrators can control more than 35 power management settings via Windows Vista Group Policy"

Microsoft Windows Vista delivers an operating system for organizations that is designed to save more energy than prior versions of Windows. Whether at home or work, computers experience periods of inactivity. To avoid wasting energy during these periods, a computer's operating system can manage power consumption. Windows Vista contains more energy-saving features than prior Microsoft Windows operating systems, provides reliable, customizable power management, and includes:

  • Default settings that maximize energy efficiency.
  • More reliable power state transitions.
  • Seamless, intuitive user interaction with power-management features.
  • Enterprise-wide deployment of power management configurations.
  • Enterprise-wide power management through Group Policy settings.
Committed to Conservation

With Windows Vista, Information Technology (IT) managers, desktop administrators, and individual users can save energy and improve productivity simultaneously.

For IT managers, the new Windows Vista Group Policy power management settings offer efficiency and allow consistent configuration across an enterprise. Windows Vista has an improved Sleep mode that provides reliable and fast transitions between active and sleeping states. These improvements help users and IT departments strike the right balance between productivity and energy conservation. Inconsistencies in platform deployments and disabled power-saving settings waste energy. A recent PC Pro Labs study of 800 office workers in the United Kingdom showed that 25 percent of users leave their computers running all weekend. The study also found that 67 percent of the users left their computers running a screensaver rather than using Sleep mode. That translates into wasted energy and higher costs.

Take Control

The advanced power management features in Windows Vista enable IT managers to take control of computers to determine the best and most efficient power management settings, and to enforce these settings across an organization. With Windows Vista, IT administrators can manage more than just Sleep and Hibernate functions. Group Policy settings allow IT managers and organizations to define organization- wide policies for energy savings, including timeouts for screensavers, monitors, hard disks, Sleep mode, and Hibernate mode. With more than 35 power management-specific settings, organizations can design the powermanagement strategies that best suits their needs and put those strategies into practice immediately and with little effort. These settings give organizations the ability to configure power settings across networks, such as specifying a consistent amount of time of inactivity before Windows transitions to Sleep mode.



Match Power Plans to Individual Needs

Because people have varying requirements for their computers, Windows Vista provides three distinct power plans out of the box. Each plan offers an easy-to-use, easy-to-understand way to configure power settings based on how you want to use your computer. Each level provides reasonable default settings that reflect the power plan.

  • Balanced Offers full performance when you need it and saves power during periods of inactivity.
  • Power saver Saves power by reducing system performance. This plan can help mobile PC users get the most from a single battery charge.
  • High performance Maximizes system performance and responsiveness. Mobile PC users may notice that their battery doesn't last as long when using this plan.
These plans can be administered and tailored to the organizations needs and enforced via Group Policy, or users can configure the settings based on their own individual computing needs. Through Group Policy, organizations can mandate certain settings while allowing users to customize others.

Faster to Sleep, Faster to Resume

The combination of Windows Vista and today's hardware platforms transitions laptops into and out of Sleep mode reliably and with almost instantaneous resume times. By default, simply closing the laptop lid puts the computer to sleep, allowing the user to avoid lengthy shut-down times or Hibernate mode when travelling with the laptop. Windows Vista also makes Sleep mode easily accessible directly from the Start menu, and the laptop's power button can be configured to put the compu-ter to sleep.

Windows Vista offers an enhanced sleep feature designed for desktop computers. The new Hybrid Sleep mode simultaneously preserves data in memory and writes a copy of the memory to the hard disk (as a hibernate file). In the event of a power loss, the system is able to boot using the hibernate file. This allows desktop users to resume more quickly from memory and helps to prevent data loss if there's a power failure.

Laptops, which have their own batteries, are not configured to use Hybrid sleep mode due to the overhead associated with writing the hibernate file. However, if a low battery condition is reached, the system will automatically wake up and then immediately hibernate.

With energy-efficient features built-in, plus customizable power plans to fit individual and organizational needs, Windows Vista helps you and your organization make less of an impact on the environment.

Esimerkki 2, Ravensoft:Virransäästöautomatiikka pienentää IT- sähkölaskua kouluissa

Green Snapper http://www.greensnapper.fi säästää energiaa kouluissa.

Hyrylän lukiossa otettiin käyttöön innovaatiopalkittu Green Snapper-ohjelmisto, jolla pystyy hallitsemaan työasemien virransäästöasetuksia keskitetysti. Koulun 88 työaseman vuosittaiset energiakustannukset tippuivat n 1.200EUR.

Myös raportointi osoittaa säästön suuruusluokan.

Green Snapper käyttöpotentiaali on edelleen valtava. Tuotteen toimivuus on todistettu sekä suurissa, tuhansia työasemia käsittävissä yrityksissä, jossa säästöt on satojatuhansia euroja, kun valtion organisaatioissa, kouluissa ja oppilaitoksissa. Joko sinun yrityksesi säästää huomattavia summia energiakuluissa?

Hyrylän lukio
Kysymys: Missä kohdassa Green Snapper otettiin käyttöön?



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