The Energy Show

Our society is moving rapidly towards electrification. Building electrification is good for the climate, good for our health, and good for our economy. We’ll all be using more electricity — it’s inevitable. Luckily, using all this extra electricity for our heating and our cars is inexpensive when you get it from rooftop solar and storage. But utilities have a monopoly on electricity distribution. They’re rubbing their greedy hands together like Montgomery Burns, safe in the knowledge that as long as their monopoly holds, people without solar and storage will have to pay exorbitant rates for power. All the tax credits, IRA rebates and local incentives that benefit homeowners to electrify will ultimately mean even more profits for utilities -- and much higher electric bills for everyone. Even though electricity rates are supposed to be regulated, when it comes to safe, clean and inexpensive power — money talks much more loudly than morality. It’s a little known fact that utilities around the country contribute enormous amounts to politicians. For example, in 2022 over $18 million was spent by utilities and their employees to influence California politicians, $5 million to the governor alone. That’s why the California Public Utility Commission unanimously voted to eliminate net metering for solar. Think about it: utilities are using our money to lobby the government to enforce and extend their electricity monopoly. But you don’t have to be subject to escalating electricity rates and unreliable utility power. With rooftop solar and storage you can generate your own power at a fraction of the rates charged by your local utility. Solar and storage is the perfect complement to an electrified home, not only because your electric bills will be lower, but also because you’ll have a source of backup power during the next blackout. For more about utilities leveraging their monopoly on electricity — and what you can do about it -- please tune into this week’s Energy Show podcast.

On this week’s show we’re talking about the first steps toward your home electrification project. What I call the Low Hanging Fruit. These are easy and cheap energy efficiency measures — most of which you can do yourself (DIY) or do not require any special contractors. Many people recommend starting with an energy audit of your home. However, unless you're working with a local energy auditor that knows your local conditions and incentives down to the city level, the standard energy audit recommendations are almost always wrong or out of order. Beware of utility energy audits and recommendations because they almost always ignore energy efficiency measures that cut back on their own revenues — such as installing solar and battery systems. So here are some of the Low Hanging Fruit electrification measures that you can do on a weekend with a trip to your local hardware store: * Replace all of your incandescent and compact fluorescent lightbulbs with LED bulbs * Eliminate Vampire loads in your house * Install a wifi setback thermostat * Seal air leaks around doors, windows and ducts One step beyond these easy measures are upgrades or electrification of your energy hog appliances. You’ll need a few more bucks for these measures, and in some cases you may want to hire a local contractor. It’s a no brainer to replace your old gas dryer with an electric dryer, change out your old pool pump with a variable speed pump, and replace your gas range with an induction cooktop. If you live in an older home in a cold or very hot climate, consider adding insulation to your attic and walls, and changing out your single-pane windows with double or triple pane windows. But watch out, some of these building shell upgrades have long paybacks. So my advice is to get started on these DIY Home Electrification measures. When you consider newly available local, state and federal incentives, many of these Home Electrification measures have paybacks in fewer than two years!

More heat pumps were sold in 2022 than gas furnaces. And that was before the Inflation Reduction Act (IRA) kicked in, which provides an $8,000 rebate for most heat pump installations — on top of a $2,000 federal tax credit and city/county incentives that can exceed $3,000. Heat pumps are cleaner, more efficient and less expensive than most conventional gas furnaces and air conditioners. But the variety in heat pump system configurations, efficiency, and costs is enough to make even a geeky engineer’s head spin when trying to determine the best solution for a particular home. My guest on this week’s Energy Show is Dennis Stinson, VP of Sales at Fujitsu General America. Dennis has been in the heat pump business for over 30 years. Along the way he’s accumulated a wealth of practical knowledge about heat pump installations for just about every type of building in the U.S. So if you’re wondering what the difference is between a ducted and ductless system, why high efficiency heat pumps use inverters (but not the solar kind), the importance of variable speed fans and compressors, the meaning of a mini-split cassette (this happened to me when I ran over my collection of 70s classic rock tapes), the difference between SEER and COP efficiency metrics, or whether or not a roll of duct tape can seal your ducts — I think you’ll get a lot out of this week’s Energy Show.

How would you like to reduce your home energy costs, improve your health and comfort, and at the same time do your part to improve the environment? If your answer is “yes,” then listen to this week’s Energy Show episode. If your answer is “no,” then maybe you don’t need your share of the $10,000-$40,000 incentives that are available for your home. The concept of Home Electrification is simple: you replace gas appliances with electric appliances — either all at once, or as the old gas appliances stop working. But the whole-home electrification process can be daunting. You will need to evaluate the costs and incentives for each electrification measure, hire several different types of contractors, and then sort through their varying recommendations. The biggest barrier to Home Electrification is that people just don’t know where to start. So here is my recommended Three Step Electrification Process: * First, attack what I call the Low Hanging Fruit — mostly simple DIY changes like installing LED lighting, weatherstripping and home controls. * Second, get quotes from contractors for each major project: electrical upgrades, solar and storage, heat pumps for HVAC and water heating, EV charger, induction cooktop, etc. Remember, there is no cost to just getting quotes — so don’t delay this step. * Third, evaluate the costs and incentives for these electrification measures, define contractor schedules and get started. In six to twelve months you’ll be delighted with much lower energy costs, a more comfortable and healthier home, and a much lower carbon footprint.

Batteries are becoming an essential part of home solar systems. With solar-connected batteries, homeowners can avoid paying peak utility electricity charges. Batteries can provide backup power during blackouts. And if you’re in California, after net metering ends in April 2023, you will need batteries to avoid peak electric rates. In the old days, automobile-style lead acid batteries were used for backup power and time-shifting energy use. I still have holes in my old blue jeans where battery acid splashed (my kids think they are fashionable now). Starting in 2016, lithium ion batteries became popular for home use. Now, over 50% of our customers are installing batteries with their solar systems. My guest on this week’s Energy Show is Magnus Asbo, Senior Director of Technical Marketing for SolarEdge. I’ve known Magnus for almost 15 years, starting when we worked together on the first AC solar module. He’s a wealth of knowledge when it comes to designing and installing practical battery systems. Some of the questions that Magnus and I cover in this week’s Energy Show are: - What are the real world kw and kwh limitations of battery systems? - Every battery manufacturer offers a 10 year warranty on their batteries – what are the terms and limitations of these warranties? - Rooftop solar systems don’t need a lot of care and feeding. Do battery systems need more attention? - Is it easy for a solar installer to start installing batteries, and do they need an electrician on staff? - How does the UL-9540a building code affect the locations in which batteries can be installed? - Are there additional software and communication requirements for installing battery storage? - Why do I need a battery after net metering ends in California? If you’re thinking about installing battery storage with your solar system, you’ll get a lot out of this week’s Energy Show.

According to Wikipedia -- which has supplanted the Oxford English Dictionary and Encyclopedia Brittanica as the world’s definitive source of information -- an Atmospheric River consists of narrow bands of enhanced water vapor winds that form over the oceans. In plain English, Atmospheric Rivers are windy rainstorms that dump a huge amount of water in a relatively short time. They account for about 50% of annual precipitation – so these storms are critical to reducing California’s current drought conditions. Since our crews work on rooftops, we’re very concerned about rooftop safety. As a result we always look at forecasts when planning rooftop work for our customers. This morning I noted that significant rain is projected for eight of the next nine days. In over 22 years of installing solar in Silicon Valley I have never seen such a severe and extended series of storms. The National Weather Service is predicting that this next atmospheric river storm will be as bad or worse than the recent New Year’s Eve deluge. You can look at the detailed forecast yourself. Suffice it to say that wind gusts will be in the 35-55 mph range, with rainfall estimates ranging from 2 to 10 inches. With storms like this one -- especially when the ground is soggy -- it’s reasonable to expect many power failures due to downed electric lines and flooded underground wiring. Storm drains will clog, leading to widespread street flooding. And some local creeks are already at flood stage. But there is some good news. Reservoirs and aquifers are filling up, reducing drought conditions. Sierra snowpack is growing, so there should be more water available for summer hydroelectricity — and the skiing is terrific. Your rooftop solar panels are getting cleaned from these downpours. If you have a solar-powered battery backup system, please take note of two features available on most systems. First, we recommend that you increase your minimum battery reserve to 50%. Second, enable the Weather Guard or Storm Preparation feature on your system, which will automatically keep your battery at 100% state of charge if there is an imminent bad weather event or PSPS. To learn more about these crazy atmospheric river storms and how solar and battery storage can keep your lights on, fridge cold and family connected, listen to The Energy Show.

In our opening Energy Show we discuss frequently asked questions about residential solar.