First, let me acknowledge that my own life is harming the planet on which we live. I drive a car, I buy stuff packaged in plastic, I have pets – all things that I know to have a negative impact on the planet that sustains me, my family, my friends, and everyone else.
I have repeatedly blogged about my concerns with the current and future energy codes because the codes are not keeping up with technology for lighting efficiency (see my previous blog posts titled “Why are Lighting Energy Standards Decreasing” and “More Issues with the Energy Code – Lighting is Running Rampant”). The graphs below, developed by our friends at Optimal Energy, show some comparisons of Department of Energy (DOE) predicted efficacies for lighting technologies and the efficacy needed to meet code for some common space types.
I’m writing this blog from the floor of the Andover Public Library in Andover, MA. After a major windstorm, power is out all over New England and people are scurrying for the few available power outlets and sources of internet.
Topics: Energy Efficiency
Hi, it’s me again – two blog posts in a row! I still haven’t had the time to compile the full TMY3 comparison picture that I envisioned when I started this rant. (See my last post if you want to learn the TMY3 basics.)
When we undertake energy analysis for commercial building energy retrofits, retro-commissioning, and even new construction projects, we normalize the energy savings to try to reflect average savings over the life of the measures. For measures like HVAC upgrades, savings are usually weather-dependent. The industry has used Typical Meteorological Year (TMY) data as the basis for weather normalization. These TMY data are generated by the National Renewable Energy Labs (NREL) and include actual weather data that is determined by NREL to be representative of typical weather over time for each month.
I’ve been writing for a few years about the deficiencies in current energy codes regarding commercial and industrial (C&I) lighting efficiency requirements. The problem isn’t fixed, even though I hear people decrying how the code is so stringent, they won’t be able to design buildings that exceed it.
I had hoped to share my recent sci-fi story about future decisions that might need to be made around a demand-constrained grid in the era of extreme heat waves and self-driving electric vehicles. But, fiction is not the point of this blog. If you want to receive a copy of the story, feel free to request it – we monitor comments. In this post, I’ll discuss a little of the back-and-forth we’ve been having regarding the New England Grid [PDF] and demand constraints.