Studies show that electrifying our transportation and building sectors are the fastest ways to reducing greenhouse gas emissions. These sectors combined generate nearly 70% of total greenhouse gases in many states, including California.
Our country is making excellent progress in the transportation sector as electric vehicles replace conventional gas vehicles – which generate zero emissions when powered by solar- and wind-generated electricity. Since trucks and buses are larger, it will take a few more years before electrification of these vehicles becomes commonplace. Nevertheless, since average vehicles are on the road for about 10 years, it is entirely feasible to completely electrify California’s vehicles in 10 to 20 years. Without national leadership, this transition will take longer in the rest of the country.
25%of green house gas (GHG) emissions come from the building sector – mostly heating, cooling and lighting. When many buildings were constructed they were heated by fossil fuels, most commonly natural gas for both space heating and water heating. With new heat pump technology it is actually cheaper to heat and cool a building with electricity – resulting in zero GHG emissions if this electricity is generated by solar or wind. Other GHG savings measures — such as LED lighting, better windows and insulation, electric ovens, induction cooktops, and better building controls – are also relatively straightforward to implement.
For new construction, it is easy to build these more efficient and cost effective solutions in. But just in the state of California it will take 50+ years for the approximately 12 million existing single family homes 3 million apartments and 700,000 commercial buildings to completely change over to these new technologies.
Unfortunately, we don’t have 50 years to make this transition – more like 10-20 years if we want to prevent global temperatures from rising more than 1.5 degrees C. On the surface, the key barrier to making this transition is the cost for new vehicles and the cost to retrofit existing buildings. New buildings are relatively easy since building electrification is actually cheaper than space and water heating with fossil fuels.
The real barrier to this transition in existing buildings is the stubborn and selfish attitude of incumbent fossil fuel industries. Architects, builders and contractors are happy to install appliances powered by electricity instead of natural gas. But fossil fuel providers, including gas utilities, oppose these electrification efforts at every opportunity. Just consider the extra costs your utility adds to upgrading your electric service and removing your natural gas connection. Please Listen Up to this week’s Energy Show as we discuss solutions to removing these barriers to building electrification.
To slow the global warming trend, a number of states have committed to the aspirational goal of 100% carbon-free energy. As a species that literally evolved from burning wood and hydrocarbons, how can we possibly run our modern lives and economy without fossil fuels?
We can indeed achieve this transition quickly and economically. First, by converting all power generation to renewable, non-carbon sources. And second, by converting all fossil-fuel burning vehicles and appliances to electricity. Steady progress towards these conversions is being made. For example, 32% of California’s retail power came from renewable energy in 2018. The state is well on the way to converting to 100% renewable electricity. Use of EVs is growing steadily, and new building codes mandate the use of rooftop solar and electric appliances instead of natural gas.
The challenge is with the existing stock of residential and commercial buildings. Homes and businesses predominantly use natural gas for space heating, hot water heating and cooking. That’s where the concept of Whole House Electrification come in. Whole House Electrification is conceptually simple: replace gas appliances with electric appliances. In reality, one needs an energy audit to prioritize these conversions, then hire five different specialty contractors to do the work: insulation, solar, HVAC, plumbing, electrical and pool. It can be a daunting task.
Fortunately there are some pioneers out there – one of whom is my friend Howard Wenger. Howard was also a pioneer in the solar industry, with stints at AstroPower, PowerLight and SunPower. Please listen up to this week’s Energy Show as Howard discusses his experiences as he converted his house to 100% electricity, supplied — naturally — by solar.
There is a new electricity provider serving customers in the city of San Jose: San Jose Clean Energy (SJCE). Technically they are not a utility since PG&E still provides distribution services: maintaining local wires and transformers, as well as providing billing. SJCE’s electricity is cleaner (almost all from renewables) and slightly cheaper.
Some people wonder why we need another utility or electricity provider. The reason is simple: investor owned utilities (IOUs) like PG&E charge more for electricity than municipally owned utilities. These new electricity providers, called Community Choice Aggregation (CCA) utilities, are managed by the cities and/or counties they serve, operate with low overheads, and buy power from inexpensive wind and solar farms.
The utility industry is going through a massive transformation. Old fashioned coal, nuclear and gas power plants are more expensive than wind and solar. In fact, business and residential customers can install solar on their rooftops for much less than it costs their local utility to delivery power. Prices for battery storage are dropping, making it cost effective for customers to install a battery system both for time-shifting energy use as well as backup power. As a result of these “behind the meter” electricity technologies, the economics of centrally generated power sold by an investor-owned utility no longer make sense in many locations.
In addition to San Jose Clean Energy, Northern California is already served by CCAs in Marin (Marin Clean Energy), San Mateo (Peninsula Clean Energy), Santa Clara County (Silicon Valley Clean Energy), with about a dozen more CCAs in operation or in formation. To learn more about CCAs and how they are taking off in communities across the U.S., listen up to this week’s Energy Show.
You know what they say: “Video killed the radio star.” Well I’m going out on a limb and adding video to this week’s podcast. But since my fans say I have a perfect face for radio, I’m not worried that this video podcast will affect my Arbitron ratings. Nevertheless, my guests on this video podcast are much more telegenic, so I encourage you to click through to this video link. (more…)
We have all seen those big power plants outside cities that provide power — historically from coal, oil and nuclear and now more recently, natural gas. These utility power plants have served us well for over a century. But technology is passing them by. These old central generation power plants are obsolete. They are more expensive than power generated by wind, solar and energy storage. Even some of the newest gas peaker plants under construction are destined to be obsolete within a decade. New power generating technologies – solar, wind, battery storage, distributed energy resources, virtual power plants, etc. — are steadily improving in terms of cost, duration and reliability. (more…)
Great solar policy is just as important as great solar technology. Obviously we need the technologies for these products — but we also need the policies so that solar products can be cost-effectively installed. And I’m not just talking about incentives…policies related to net metering, interconnection and permitting are just as important. (more…)
Barry Cinnamon has been blogging about the Solar Industry since 2007.
Barry hosts The Energy Show, a weekly 30 minute talk show that runs every Saturday at 1:30 PM on KDOW Radio AM in San Jose California.
Every week Barry provides practical money-saving tips on ways to reduce your home and business energy consumption.
Barry Cinnamon heads up Cinnamon Solar (a San Jose residential and commercial solar and energy storage contractor) and Spice Solar (suppliers of built-in solar racking technology). After 10,000+ installations at Akeena Solar and Westinghouse Solar, he’s developed a pretty good perspective on the real-world economics of rooftop solar — as well as the best products and services for homeowners, manufacturers and installers. His rooftop tinkering led to the development of integrated racking (released in 2007), AC solar modules (released in 2009), and Spice Solar (the fastest way to install rooftop solar modules).
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