Tankless Water Heater or Storage Type? Which Is Right For You?

With typical tankless heaters you end up with a tub full of tepid water. If you try to fill it more slowly to get it hotter, it takes so long to fill that it cools off before you get in anyway. So if you like to soak away in a hot tub, you better make sure you get a big enough heater to handle the job.

UTC Power Chalking Up Fuel Cell Installations

Over here in the United States, UTC Power has racked up several significant high profile fuel cell installations with more coming down the pipeline.

Who Needs a Tax Credit?

The oil and gas industry were provided a $17 billion tax credit from 2007-2011 in the latest energy bill passed last December. That's $3.4 billion in tax credits for each of five years.

ZIGBEE SMART ENERGY

ZigBee Smart Energy is a standard, easy and affordable way for communicating energy-related information, such as price, over ZigBee wireless home area networks. It is a global, open standard that facilitates the creation of interoperable energy-related devices from multiple vendors to monitor, control and automate the use of energy.

BEAT ONE HUNDRED MPG

Ford, Bell, Edison and the Wright Brothers would not be allowed to create their innovations today. Their businesses started too small; their ideas were "unproven." Issues with permits, insurance, rights of way would have killed their ingenuity. In a free market, ingenuity has a small chance of churning into commercial success. In a planned economy ingenuity is doomed.

FUTURE PERSPECTIVES OF NUCLEAR POWER

At present there are globally 439 nuclear power reactors in 31 countries with an installed electricity net capacity of about 372 GW in operation, generating approximately 16 per cent of the world's electricity.

GEOTHERMAL IS NOT WHAT MANY PEOPLE THINK IT IS

What: No "Old Faithful" in your back yard?

GREEN ROOFING OPTIONS AND ADVANTAGES

Working in conjunction with a well-insulated attic, environmentally friendly roofing can go a long way to keep the home's heating and cooling system functioning optimally. If it's about that time to renovate your roof, you've got a big and important project on your hands. That said, here are some things to look out for when planning for a green roof.

HOW TO INFORM PEOPLE AWAY FROM SUSTAINABLE

It is much easier to stress the unreliability of RE if you ignore the fact that wind and sun were never meant for baseload energy production, and that hydro, biomass, geothermal, etc. are continuous, storable and in fact easier to turn up/off than nuclear.

LIGHTS OUT FOR INCANDESCENTS & HALOGENS

It's clear that all large-scale lighting applications, from businesses to schools, stand to benefit from LEDs. Whether it's T8 fluorescent replacement, halogen replacement, or large-scale incandescent floodlight replacement, the benefits make the upgrade a no-brainer

RAINER WISCHINSKI - SPINWAVE SYSTEMS

Spinwave Systems develops and markets wireless EMS. This includes wireless sensors for temperature, relative humidity and motion (occupancy), wireless utility meter interfaces for electric, gas and water meters and wireless switches to control equipment and lighting loads.

ROGER COX - THE EVOPOD

Independent studies carried out in the UK have predicted that conservatively about 7% of the UK's present electricity usage could be produced from tidal stream energy sources. Evopod has been developed to extract energy from the deeper water sites where the water depth is greater than 35m to 40m.

SOLAR PHOTOVOLTAICS MARKET POTENTIAL

The three leading countries -- Germany, Japan and the USA -- represent almost 89% of the total worldwide PV installed capacity. Could these countries' renewable energy political decisions provide a model for the rest of the world?

SOLAR THERMAL AND EVACUATED TUBE TECHNOLOGY

The interesting thing is that despite the fact evacuated tubes have better performance throughout the day because of IAM, are more economical due to ease of installation, and are capable of reaching higher temperatures, the technology has not received the recognition it deserves since the majority of the publicity we currently see focuses on PV.

THE GREEN DATA CENTER

The average power consumption per server quadrupled from 2001 to 2006, while the average number of servers doubled and is expected to grow another 50% by 2010. This rapid growth has resulted in data centers typically consuming up to 100 times more energy per square foot than a typical office building.

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