Category: Climate Change


  04:41:00 pm, by Laurel Hamilton, Projects Coordinator, Run on Sun   , 252 words  
Categories: All About Solar Power, Climate Change

Gloomy spring messing with your solar?

Run on Sun installs solar on a grey day.Angelinos typically struggle with cloudy “cold” days more than those accustomed to less sunny locales. So after the last few months of gloom it was no surprise to hear the National Weather Service announce that it was in fact a very abnormal year for Los Angeles. 

Temperature data from around Southern California showed that the region experienced a “reverse” meteorological spring, meaning average monthly temperatures decreased instead of increasing. Average temps for downtown Los Angeles in March, April and May were 68.2 degrees, 65.8 degrees and 64.2 degrees, respectively, according to NWS. The normal averages between 1981 to 2010 were 60.6 degrees, 63.1 degrees and 65.8 degrees. Since recordkeeping began in 1877 only three documented “reverse” springs have ever occurred. But this is the first in nearly a century! 

While many Angelinos may feel as if it is colder than usual, these past three months have actually been warmer and drier than normal across Southern California. The difference is we have been experiencing a cooling trend overall since the warmer than usual February. April and May actually felt more like LA’s “June gloom", typical only for June. 

For those fretting over low output from your solar system…don’t worry! Your system is NOT malfunctioning. We’ve just experienced a less productive than normal spring. I’m sure the sunshine will return and your solar meter will continue to spin in the right direction before you know it. In the meantime, be thankful for any precipitation we get, and maybe even get out and enjoy the grey days that are neither too hot nor too cold!


  09:40:00 am, by Laurel Hamilton, Projects Coordinator, Run on Sun   , 374 words  
Categories: All About Solar Power, Solar News, Climate Change, State of Solar

Top 3 Ways Solar = Water Conservation

After 4 years of severe drought and this year’s winter snowpack at a pathetic 8% of typical levels, it’s obvious that California will have to find real solutions as populations rise and the effects of climate change worsen. We rely on the High Sierras’ snowmelt throughout the year for everything from our green lawns and fresh food (throughout the US) to our hydroelectric power.

Governor Jerry Brown’s recent mandate for cutting water use by 25 percent was overdue and necessary, but communities will have to step up conservation efforts in a big way. Ever since the Governor’s big announcement ideas for how best to curb water use have been flowing. So why should PV solar power generation be at the top of the list? What does water conservation have to do with solar?

    1. As noted previously in “Thirsty? Think Solar!“… compared to other energy sources, photovolataic solar energy systems have the lowest life cycle water use.  Increasing the amount of electricity generated by PV directly reduces our water demand
    2. Once a big player in California energy production, hydropower dropped from 12 percent in 2013 to just 6 percent in 2014 due to the extreme drought conditions. But solar has stepped in to fill that gap, with production more than doubling to provide 5 percent of California’s power in 2014—and that figure doesn’t even count rooftop solar! According to the Energy Information Administration, solar PV and concentrating solar power together offset 83 percent of the total hydropower decline.
    3. With drought comes a severe shortage of rainy days. Anyone with solar panels knows the joys of monitoring your energy output on a sunny day and the much sadder numbers that result on a gray day. As the drought persists, California’s sunshine provides an endless resource that should be tapped.

Solar is an increasingly important solution to water scarcity as well as energy security. With no sign of a solar slowdown in California—we are the first state to get 5% of its energy from solar—strong generation records are likely in coming years. While solar has been included in some communities’ plans to reduce water use (such as in the Los Angeles “pLAn“), many people are unaware of this solution. Communities, individuals and businesses installing rooftop solar can make a real positive difference for California’s dire water situation.


  05:43:00 pm, by Laurel Hamilton, Projects Coordinator, Run on Sun   , 381 words  
Categories: All About Solar Power, Solar News, Climate Change

Solar Impulse Launches Zero-Fuel Flight Around the World Impulse is the first airplane to fly day and night on solar power alone. To be clear folks, that means 22,000 miles without a single drop of fuel.

Run on Sun has been following the exciting developments of Solar Impulse since it’s prototype began its groundbreaking test flight across America in 2013.

After the lessons learned from the American flight, an upgraded Solar Impulse 2 was developed with a wingspan wider than a Boeing 747, more than 17,000 solar cells and 1,300 pounds of batteries. Amazingly, the aircraft still weighs no more than an average car!

Finally, this  morning, on March 9th, 2015, Solar Impulse 2 and her team were ready to embark on their record-breaking aeronautical journey around the world. The first leg officially departed from Abu Dhabi at 7:12AM UTC+4. Landing in Muscat, Oman at 20:13PM UC+4 pilots Bertrand Piccard and Andre Borschberg rested for a few hours before continuing onward to Ahmedabad, India.

With a top speed of 50 mph, the entire circuit is planned to take four or five months before returning safely back to Abu Dhabi. You can follow their flight online as well as chat with the mission control center and view cockpit measurements like solar battery storage and pilot heart rate!

Solar Impulse is not only about accomplishing the first round-the-world solar flight. Behind the development of this technological feat lies a very powerful message. Piccard and Borschberg are using each landing as an opportunity to reach out to governments, NGOs, education centers, and the broader public to share what is possible with clean technologies.

“We shouldn’t be listing targets, but rather solutions – ways of meeting those targets. Because these solutions exist. Our society could already cut energy consumption in half by replacing old, outdated, polluting technology with clean technologies. Couldn’t we, all together, persuade governments to modify the legal framework so as to encourage the replacement of polluting technologies by cleantechs? That would at least make debates constructive and international climate conferences interesting.” - Bertrand Piccard

In conjunction with Solar Impulse’s round-the-world flight, the pilots started an online campaign called “Future is Clean”. In December 2015, they will share the largest collective voice in favor of clean technologies with global leaders at COP21, the United Nations Climate Change Conference in Paris. You can add your pledge and share with your networks at


  09:07:00 am, by Laurel Hamilton, Projects Coordinator, Run on Sun   , 414 words  
Categories: All About Solar Power, Climate Change

Thirsty? Think Solar!

Water-Energy NexusHere in SoCal discussions on water conservation are a regular occurrence. We all know the management of water resources in California is critical given increasing populations, increasing strains on our enormous agricultural ‘breadbasket’, and ever-decreasing precipitation as the effects of climate change worsen. However, how many of us think about energy in terms of water conservation?

According to the International Energy Agency, energy production accounts for 15% of the world’s water withdrawal – water withdrawn from groundwater. Thermoelectric power plants account for over one third of the fresh water withdrawn in the US. Shockingly that volume is greater than the water used to grow our food!

So which energy sources are hogging our precious water and how? Actually, most energy generation technologies — including coal, nuclear, biomass and even concentrating solar power – consume astounding amounts of water.  It is necessary primarily for cooling thermal power plants, as well as fuel extraction, transport and processing. This results in both the depletion of available freshwater resources and affects the quality of our remaining resources downstream due to the polluting effects of energy-related outputs.

Global water use for energy productionSunlight, on the other hand, is an infinitely abundant resource in most water-stressed parts of the world, including here in California. The World Energy Outlook, published by the International Energy Agency reported that photovoltaic (PV) solar energy is one of only two electricity generation technologies with negligible water consumption.

PV energy systems provide a sustainable solution to the water-energy nexus by generating clean electricity with little to no water use. With the smallest carbon footprint, lowest life cycle water use, and fastest energy payback time in the industry, thin-film PV modules provide a sustainable solution to water scarcity and energy security.

Water conservation must be a priority in water-stressed parts of the world. While PV solar is unlikely to provide enough power for the entire state any time soon, individuals and businesses installing roof-top solar can make a positive difference. It turns out, not only in reducing air pollution from dirty energy but also in saving our water resources!

It is important to note the other half of the energy-water nexus. Energy is required to produce, treat, and distribute water. So, even if solar is providing your electricity, the water you use is still linked to polluting energy sources. Combining smart water conservation techniques, such as those suggested in this EPA list of household water saving methods, with going solar is the best bet for ensuring our planet’s resources will continue to provide for our future.


  06:06:00 pm, by Laurel Hamilton, Projects Coordinator, Run on Sun   , 517 words  
Categories: All About Solar Power, Utilities, Climate Change, Energy Efficiency

Internet of Things: Energy Saver or Vamping Nightmare?

Wikipedia Internet of ThingsAs its moniker suggests, the Internet of Things (IoT) is about the connectivity of ‘things’, not people. Hence, managing our hyper-connected world by using data from remote sensors in our devices to provide control in a smarter, more efficient way. As nebulous and vague as the ‘Internet of Things’ is, it has been cited as the hot technology trend of the future. In a recent Business Insider report, they estimate IoT growth will increase connections from 1.9 billion devices today, to 9 billion by 2018 (see chart below).

In fact, IoT is already a reality with 24/7 connectivity to laptops, tablets, smartphones, smart TVs, gaming consoles, and even wearable devices.

One of the best known applications for IoT is the smart metering of electricity, water, and waste systems as well as integrated management of home and building systems. Building temperature, humidity, ambient light and occupancy could be monitored by sensors and used to control heating, lighting, air-conditioning, and the operation of doors and windows, etc.

Business Insider IoT ChartSmart thermostats such as Google’s Nest allows home owners to manage their heating requirements remotely via their smartphone. Where utilities participate, users can program their biggest energy inefficient appliances (heating and cooling systems, washers and dryers, refrigerators, ovens, dishwashers, and pool pumps) to respond to varying energy tarifs and avoid peak demand periods. Sometimes demand reward credits are offered by utilities.

While these applications may make the workplace and home more comfortable and secure, the real motivation for adoption of such systems will be from potential energy benefits and hence cost savings. Avoiding peak periods would also have the broader environmental benefit of spreading demand, allowing power plants to operate more efficiently and reduce the need to build generating capacity to meet demand spikes.

But opinion seems divided over whether the Internet of Things will deliver improved energy efficiency overall. The exponential growth in the number of connected ‘things’ that all consume power could negate many of the efficiency gains of things like smart thermostats. More than $80 billion in power is wasted by connected ‘things’ according to an IEA (International Energy Agency) report. This is what is known as “vampire power”, or “vamping", and refers to energy used when devices are switched off or in standby mode. The IEA report notes the problem could result in $120 billion USD wasted by 2020 due to vamping!

One potential smart solution to vamping is to make appliances in the off or sleep mode actually power off but respond to a timer which is only responsive to the “on” switch during a portion of each second.  The long term key to whether IoT improves energy efficiency lies with improving the energy efficiency of the devices themselves while at the same time providing innovative applications.

The wider potential of the Internet of Things is enormous and exciting. Wider ’smart grids’ could make our urban centers dynamic and responsive to energy demands, optimizing city-level energy use. As the Internet of Things continues to grow, the opportunity for bigger energy and environmental benefits from applications like smart grids could become a valuable reality assuming the overall efficiency of our ‘things’ also continues to improve. 

1 2 3 4 5 6 7 8 9 10 >>

Jim Jenal is the Founder & CEO of Run on Sun, Pasadena's premier installer and integrator of top-of-the-line solar power installations.
In addition, Run on Sun offers solar consulting services, working with consumers, utilities and municipalities to help them make solar power affordable and reliable.

Ready to Save?

Let’s Get Started!

We're Social!

Follow Run on Sun on Twitter Like Run on Sun on Facebook


Run on Sun helps fight Climate Change
multiblog platform