A bit of mathematics at the end of the week. The

The first table shows three different installations. The old one is equipped with T8 fluorescent lamps that are at the end of their lifetime and dirty. That is why the luminous flux is so low for the 60W tube. In this situation, the need for a replacement is present. The choice is between a fluorescent tube, a LED tube or a completely new installation with controls. Controls reduce the average power consumption to 1/3 and less of the original load. We can estimate the new fixtures will consume 12W only when connected to controls that detect presence in the hall and reduce the lighting level in areas that are not in use. Each light point will be replaced. It is (often) possible to reduce the number of fixtures with a new installation. The example is concentrating on a one-by-one replacement to make it easier to understand.

The table above shows the sum of all costs for running and maintaining the installation each year and in total. The Retrofit Solution reaches an ROI after 2 years already. The New Installation with controls is going to turn back the high investment after 10 years. Both LED solutions do better than the conventional one, save energy and CO2 emissions. Let’s go green with LED light sources!

Looking to buy or rent the perfect vehicle for your summer vacation? You might want to consider going electric. From reducing carbon emissions to improving air quality and limiting noise pollution, electric cars are a great alternative to regular vehicles and can save you money on gas! The benefits of an electric car surpass the benefits of other vehicles while helping the environment. Here are a few reasons why using an electric car will be great for your summer vacation!

Greener Alternative

According to EPA estimates, transportation accounts for 28 percent of U.S. greenhouse gas emissions, 80 percent of that belonging to automobiles and trucks. How much are you contributing? While electric cars produce slightly higher manufacturing emissions than traditional vehicles, after you consider vehicle manufacturing, fuel combustion and fuel production, the carbon footprint of an electric vehicle is nearly half that of its gas-powered cousin – 300g CO2e/km for the average gas vehicle versus 180g CO2e/km for electric. This protects not only the environment, but your wallet as well!

Increase in Charging Stations

The number of charging stations available for electric cars across the U.S. is increasing in response to the surge in popularity of electric cars. More than 9,500 electric stations and over 24,000 charging outlets are available across the country, searchable by zip code. Since 2010, more than 18,000 stations have been added, including free, pay-as-you-go and monthly subscription style services. Many states are also rolling out tax incentives to increase accessibility to charging stations at home and during travel.

Electric vs. Gas Power

Powering electric cars is cheaper than fueling cars that operate on gasoline. Solar and time-of-use (off-peak) electricity pricing also decreases the costs of operating electric vehicles, and available government grants and tax incentives can greatly reduce the sticker price. Add to that the fact that electric vehicle prices are continuing to fall while gasoline prices continue to rise, and you’ve got a recipe for some serious saving!

No Tailpipe Emissions

Nearly all credible researchers believe that electric cars, even in coal-dependent regions, have a smaller environmental impact than conventional vehicles. In regions with a strong grid mix of renewables—such as hydro, wind and solar—or for electric car drivers with home solar, the emissions benefits are dramatic. You can expect some analysts to argue the opposite. But it’s undeniable that electric cars don’t have a tailpipe, and therefore provide a real benefit to improving air quality for you, your family, and your community.

Home Recharging

If you decide to purchase an electric vehicle, there’s a good chance you’ll never have to go to the gas station again. All you have to do is pull into your garage or driveway, reach over for a plug, and push it into the charging inlet. It’s very convenient and takes all of about 15 seconds. Wake up the next morning, and you have a car ready to go another 80 to 100 miles—or double that, depending on the model. That’s plenty for everybody except interstate travelers. (The charging task can be more difficult for people living in condos and apartments, but access to multi-family and workplace charging is improving every day.)

Renting an electric vehicle for your summer vacation could save you a lot of money and trips to the gas station. This will leave extra money in your pocket for other fun things to cross off your vacation bucket list. Who knows? You may end up loving your experience with an electric vehicle that you’ll probably buy one when you get back from your vacation!

The smart grid can be thought of as national and personal all at once. On a personal level, the smart grid connects all of the electronics in your house, letting them communicate on an internet for electronics. This electronic internet also communicates with you via your smart phone or computer in real time, letting you monitor your electricity usage.

Your appliances will talk to each other and organize times of non-peak electrical usage for them to complete cycles that use a lot of energy. Your home will talk to you, letting you know if you’ve left your television running or if the light in the garage is still on.

On a national level, your home will be tied into the national grid like it is already, but two-way communication will happen with the power plant. If your home has solar panels installed by an electrician, any extra energy you produce will be sold to the power plant. The power company will be able to monitor your electrical usage too. They will use this information to create a picture of your neighborhood. This tells them exactly how much energy needs to be sent in your direction.

This system will be a replacement for our current power grid, and it will allow two-way communication between the power plant and your home. The meters for this system will report themselves. You won’t need a stranger tromping through your yard once a month to read your meter anymore.

This system will create a more efficient use of electricity by sending it where it needs to be. It will also report problems as soon as they happen. Before you could find a flashlight during a blackout, the power company will know exactly what wire went down and why. This will cut repair times. Since everything will operate more efficiently, there will be less cost to keep everything operating, which will translate into cheaper power prices for you.

Maintenance for your home will be easier. Having an electrician wire your house for this system will let you know exactly what your home is doing. If your water heater sees problems that could indicate a breakdown, you will get a text message alert. This will let you drain it before it turns your basement into a hot tub.

While you will need to replace your current electronics with applicances designed for this new grid, the cost will be worth it. The power grid will be more reliable, which means fewer blackouts. Your house can even report suspicious electrical activity to you, creating increased security. You may find yourself pressured to have an electrician install solar panels, but the power company will pay you for the extra energy. It will be an improvement for everyone involved.