Renewable Energy Continues to Grow

Buildings Magazine recently published an article "Renewable Energy Surges Ahead" which indicated that wind, solar, geothermal, biomass, and hydropower are giving coal and natural gas a run for their money. While that may be good news on the surface the total percentage of renewable energy production is still is only 11.2% of total generation for 2012. 

While this is laudable and an important step for renewable energy, the important fact I saw was that over the report period of 2000 to 2012 renewable energy accounted for 56% of all new generation capacity. That in itself is pretty astounding. Most of that is reportedly from wind and PV solar.

These are impressive numbers, but for all the increased capacity from renewable sources, commercial buildings are only getting about 1% of their power needs from renewable sources. More reform needs to be done at the legal organization level of power generation. Many states regulate power generation for the benefit of large, centralized power companies. Most of their new generation from clean sources have come from large wind and solar farms at some distance from the consumer of power. This continues to perpetuate the centralized generation paradigm they are most familiar with. So much so, in some western states there is a movement from the utilities to stop roof-top solar PV installations because they say it is an unfair advantage to the homeowner to use their distribution systems without any cost. The reality of these arguments is that it really makes the utility distribution systems more effective and reduces the overall transmission energy losses because as the energy comes in from one house it can be immediately used by a neighbor close by. 

If distributed, clean energy is ever to work effectively our state governments are going to have to realize distributed energy production is in everyone's best interest, including the power generation companies. As the markets and technolgy change, so our utilities are being called on to change and grow too. 

If you support clean energy production and more sustainable power generation, then you should be in support of all generation, recovery, and conservation opportunities. One of those is to allow small groups of individuals and companies to form local power cooperatives which reduce transmission losses by generating power close to the point of use and encourage local diversity at the neighborhood level, rather than relying on singular power generation sources. That diversity also provides greater security and reliability for all users. 

To gain this benefit we have to change the state laws and regulations on the formation of utilities and power cooperatives. The large utilities don't want to give up their regional monopolies they have held for decades, but it's time we moved ahead and looked seriously and thoroughly at the benefits and risks involved with distributed, multi-source power generation. Write your state legislators about this issue and help them learn about the benefits of distributed power generation in your state.

Texas Revises Legislation to allow more CoGeneration - Designers Awaken

If you don't know much about the power system in Texas they are about the only state in the 48 which has their own power grid isolated from their neighbors and it's been more blessing than curse to them. They don't worry about neighboring regional power glitches creating problems for them. Their energy policy is obviously driven by the oil and gas reserves they have which generates nearly all the power in Texas. But the folks in Texas aren't blind to the issues petrol-powered energy has and has a pretty aggressive policy to see a diversified energy production profile for the state.

Recently the legislators did something pretty bold for them, they lessened regulation on CoGeneration facilities. You see the Utility Commission has previously looked at these facilities as small utilities and as such it hampered the development of significant CoGen power where it could really help the grids in TX.

The Texas Legislature recently passed House Bill 2049, which removes regulatory barriers and improves the business climate for cogeneration facilities by clarifying language in the Texas Utility Code. "…this policy change will help the entire Texas grid by relieving grid congestion, increasing grid capacity and reducing the amount of water used in the generation of electricity," said Paul Cauduro, executive director of the Texas Combined Heat and Power Initiative.

See an article on this new legislation here from Fierce Energy

So how does this tie into the issues surrounding the Built Environment and my interests expressed here? Well it's pretty simple. While PV power is nice, it is designed as an add-on system to normal operations and is by it's nature diurnal. CoGen isn't. GoGen systems are designed to recover waste energy and increase overall efficiency by using that waste heat to create more power. Too many times we don't look at our buildings in terms of their waste energy profile. How much energy are our buildings throwing away with single-pass heating and cooling and even the recapture of excess heat in the summer being exhaled from our buildings by cooling systems.

The important thing to realize here these systems have been around a long, long time and even today there are emerging technologies which can absorb more and more excess energy to be either stored and used later or recovered and used immediately to generate power. We do have the technology now, we can use commercially available systems which are designed from residential scale to large industrial complexes. The problem is we are so in love with the PV solar story we have likely forgot some basics of systems design along the way.

My challenge to building design and execution teams is get educated about CoGeneration and it's advantages and educate your client base to it's advantages and quick paybacks and long-term benefits. Our neighbors in Texas have decided CoGen makes sense for their power needs, maybe the rest of us should start looking at CoGen harder and push for easier regulation and implementation in our own back yards.

Recycling Renewable Energy-Seems like a natural but is it?

I was kind of pulled out of my chair this morning when I was reviewing some news feeds and came across this article.

Richard Gross, a professor of chemical and biomolecular engineering at the Polytechnic Institute of New York University (NY-Poly), is deeply troubled that clean energy technologies meant to help preserve the planet employ nonsustainable, petroleum-based materials.
"The blades on a wind turbine, for example, are massive and need to be replaced about every 25 years," Gross said. "They end up in landfills, like any other nonrecyclable garbage."

This a clip from "When Wind Turbine Blades and Solar Panels End Up in Landfills" published in Electric Light&Power. What seems quite improbable to me is the statement by Professor Gross that a lot of the equipment used for sustainable "green" power ends up in landfills! What's going on with this. So I started doing some research for other articles and sources to support the professor's claim. [see delicious and search for recycle wind turbines]

I also looked back at the source of the information. Professor Gross has his own axe to grind here since he is looking for practical application for his research in bimolecular engineering. I'd add to his cry for other building materials which often end up in the landfills. For example, how about porcelain fixtures that get thrown out. Can they be ground up and re-purposed again? How are we recapturing the heavy and toxic chemicals used in PV based panels. Are a lot of these ending up in landfills, or not.