Phyllis Theermann

This weekend Robert accomplished one of his green projects.

He changed out ten 50W halogen flood bulbs in his basement for ten 8W LEDs.

Here are the results:

Before:    500W


After:       80W

Bulbs Cost: $300

Yearly cost savings:  $50  (Assumes 11/c per kWh)

Payback period: 6 years (assuming 3 hours usage per day)

Lifetime savings:      $800 (over 22 years)


Unlike CFLs, the new LEDs have a warm look, no mercury, are dimmable and go on instantly. 

Light Facts

Light Facts

Go grab some new lights for your home. With the new standard light fact labels right on the box, accomplishing one of your green projects will be easier.

Tell us about your latest green project here.

Phyllis Theermann

Featured tip from the Wellesley Energy Action Guide is to reduce your thermostat 10 degrees for 8 hours.

According to the Department of Energy, households can achieve savings of as much as 1% for each degree if the setback period is eight hours long.  That’s as much as 10% savings for a ten degree setback overnight and even more for a larger setback on vacation!

Sustainable Wellesley used a Nest web connected thermostat to see how much could be saved on a December getaway…

Image (below) shows how the heating system was affected by reducing the temperature for 5 days from December 26 – 31.  The red bars indicate when the furnace was running and the red circles indicate temperature setting.  The “Away” setting was 50 degrees.  The heat barely needed to run for the first 2 days as the house temperature dropped.  Including more than 5 hours of re-heat time the vacation setback reduced home heating by 30%!

With a little help from a programmable thermostat or a web connected thermostat, like the Nest, the house is already heated by the time the vacation is over.

Phyllis Theermann

There are many things you can do.

1. Complete a Sustainable Wellesley Checklist (Whether you live in Wellesley or not!)

2. Get a free home energy assessment ☀ Call 888-772-4242 in Wellesley. ☀ Visit MassSave.org (all towns).

3. Buy Green/Renewable Electricity ☀ Visit WellesleyRenewableEnergy.com or call 781-235-7600 in Wellesley. ☀ Visit MassEnergy.org (NSTAR and National Grid customers).

Want to do More? Click on these links:

What Can My State Do?

What Can My Country Do?