Energy Exchange

Here Comes the Sun: How California is Bringing More Renewables to the Grid

Have a sunny dayAsk most people what the Beatles and California have in common and they might very well be at a loss. However, the answer is pretty simple: they are both unabashed trendsetters in the face of resistance – the former in their musical style and the latter in its clean energy policies.

Not content with setting a Renewable Portfolio Standard that ends at 2020, Governor Jerry Brown and state legislators are pushing for the Golden State to get 50 percent of its energy from renewable resources by 2030.

To meet this ambitious target, California must build a system that is largely based on renewable electricity, like wind and solar. This is not an easy task. The primary reason? Sunshine and wind are only available at certain times of the day and can be variable during those times.

Traditionally, managers of the electricity grid have relied upon dirty “peaker” power plants – usually fossil fuel-fired and only needed a couple of days a year – to balance the grid during periods of variability or when electricity demand exceeds supply. But, in a world where 50 percent of our energy comes from renewable sources as a means to achieving a clean energy economy, we can’t rely on these dirty peaker plants to balance the variability of wind and solar.

Luckily, technology is available today that can help fill the gap of these peaker plants – and the California Public Utilities Commission (CPUC) is starting to embrace it. Read More »

Also posted in Air Quality, California, Cap and Trade, Clean Energy, Climate, Demand Response, Electricity Pricing, Energy Efficiency, Energy-Water Nexus, Grid Modernization, Renewable Energy / Tagged | Read 1 Response

Disruptive is a Buzzword…but it’s true for Batteries

batteryFor more than 100 years, the U.S. power system relied on fossil-fueled power plants to meet our growing energy demand. Now, clean energy resources like renewables are quickly changing our energy mix. But what happens when the sun isn’t shining or the wind isn’t blowing? What about when power demand momentarily outpaces supply? That’s where batteries and energy storage come in, offering a fundamental, even disruptive change to the U.S. electricity system as we know it.

Batteries are energy game-changers

Today’s electricity system not only overproduces to be prepared for unforeseen problems, it also deploys dirty “peaker” plants that fire up during those few times per year when electricity demand is high (like during a heat wave) and the electric grid is stressed. With batteries, there’s no need for either overproduction or inefficient backup reserves, ultimately saving both utilities and customers money.

Batteries can provide bursts of electricity incredibly fast, often in milliseconds, and with far quicker reaction times than traditional power plants. As a result, energy storage helps the electric grid absorb and regulate power fluctuations, providing electricity fast, when and where it’s needed. Since the supply and demand of power must be carefully balanced, this ability helps prevent the grid from experiencing brownouts or blackouts. Read More »

Also posted in Clean Energy, Energy Efficiency, Grid Modernization, Illinois, Renewable Energy / Tagged | Read 1 Response

New Jersey Transit Becomes a Leader in Microgrids

Source: WallyFromColumbia

Source: WallyFromColumbia

Superstorm Sandy crippled much of New Jersey’s critical infrastructure when it swept through the state two years ago. Stuck without power at home, many of the state’s residents also couldn’t get to work because the operations center for New Jersey Transit (NJ Transit) flooded, damaging backup power systems, emergency generation, and the computer system that controls train operations.

New Jersey is doing its best to make sure that won’t happen again. After a highly competitive grant process, NJ Transit last week received $1.3 billion in federal funds to improve the resilience of the state’s transportation system in the event of devastating future storms. The funds include $410 million to develop the NJ TransitGrid into a first-of-its-kind microgrid capable of keeping the power running when the electric grid goes down.

Microgrids are different from traditional electric grids in that they generate electricity on-site or nearby where it’s consumed. They can connect to the larger grid or island themselves and operate independently. Read More »

Also posted in Clean Energy, Energy Efficiency, Grid Modernization, New Jersey / Tagged | Read 3 Responses

The 2014 U.S. Clean Tech Leadership Index: Did your State, City Make the Cut?

cleantech indexjpgIf there is one thing that works in the world of advocacy, it is a ratings table that shows how one state, metropolitan area, or utility compares to its peers. The latest report, U.S. Clean Tech Leadership Index, from Clean Edge does just that.

The fifth annual U.S. Clean Tech Leadership Index finds that California, Massachusetts, Oregon, Colorado, and New York lead the way among states in solar and electric vehicle adoption, with smart climate policies and clean energy financing driving the clean tech leadership index growth.

Clean energy is becoming a popular choice for mainstream America with 11 states now generating more than ten percent of their electricity from non-hydro renewable sources, according to the Clean Edge report. As seen in the graph below, Iowa leads the way in utility-scale wind, solar, and geothermal electricity generation. Read More »

Also posted in Clean Energy, Energy Financing, Renewable Energy / Comments are closed

Mapping the California Companies Fueling a Cleaner Future

green-roads-mapBy: Emily Reyna, Senior Manager, Partnerships and Alliances

Clean energy and clean tech sound exciting, but most people don’t see these businesses as a major part of our economy, especially when traditional fossil fuels rule at the pump.

But thanks to policies like California’s Low Carbon Fuel Standard and cap and trade, more and more businesses are giving us options when we need to get from point A to point B, and they form an increasingly important source of economic growth in the state. From cars running on used vegetable oil (biodiesel) to cars you can plug into your house, new and exciting innovations are fast coming to market.

The new interactive Green Roads Map that EDF created in partnership with CALSTART, Environmental Entrepreneurs (E2), and the Natural Resources Defense Council, shows that we have many emerging options for our cars and transportation fleets, and that clean transportation is a flourishing industry in California.

The Green Roads Map is more than just a collection of dots – the map presents an important picture of the investors, researchers, producers, and salespeople who are transforming our economy and transportation system today. Read More »

Also posted in Air Quality, California, Clean Energy, Climate, General / Comments are closed

This Smart Energy Experiment in Texas will Benefit You, Too

Workers install solar panels on a home in Austin's Mueller neighborhood, a project of Pecan Street Inc.

Workers install solar panels on a home in Austin’s Mueller neighborhood, a project of Pecan Street Inc.

As I stroll through the Mueller neighborhood in Austin, TX, I see parks, fountains, two-door garage homes – absolutely nothing out of the ordinary – just your average suburban neighborhood. But I know better.

Under the surface of this community lives the most “connected” network of energy customers in the country. Mueller is the launching site for Pecan Street Inc.’s living smart-grid research project and, according to a recent issue of Time Magazine, America’s Smartest City.

The Time article features homeowners who generate and make money on their solar panels, while enjoying access to minute-by-minute energy use data. It shows their sense of stewardship and empowerment.

The story does a good job summarizing the mission of Pecan Street, of which Environmental Defense Fund is a founding member and environmental partner. But the author misses one important point when he writes: “The rest of America may never realize Mueller’s vision for the future.”

The truth is, we have cause for a lot more optimism than that. We believe that the Mueller model is scalable and EDF is working hard to make sure the rest of the country can also enjoy the benefits of a smarter, cleaner home. Read More »

Also posted in Clean Energy, Energy Efficiency, Grid Modernization, Renewable Energy, Texas / Comments are closed