Energy Exchange

How to Ensure New Natural Gas Infrastructure Doesn’t Lock Out Renewables

By N. Jonathan Peress / Published: June 5, 2015

In an ideal world, our electricity system would run on 100 percent clean, renewable energy. Moving toward that goal means transitioning away from a system of centralized, fossil fuel power plants, to an intelligent, efficient, networked energy grid that smoothly integrates vastly increased amounts of renewables and energy-efficient solutions.

To do that, we have to balance the intermittency of renewables with our steady need for electricity. That’s where natural gas comes in: When the sun stops shining or the wind stops blowing and renewables are offline, gas-fired plants can ramp up more quickly and efficiently than coal plants.

Many policymakers, regulators and industry members believe we have to build thousands of miles of new pipelines costing $150 billion or more to feed this need. But that could be an unnecessary and expensive mistake, not just now but over a very long term. Read More »

Posted in Clean Energy, Electricity Pricing, Energy Efficiency, Gas to Clean, General, Natural Gas, Renewable Energy, Utility Business Models / Tagged FERC, pipelines | Comments are closed

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

By Larissa Koehler / Published: March 10, 2015

Ask 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 »

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

What do the ERCOT Reports Really Say About Texas’ Cleantech Market?

By Kate Zerrenner / Published: January 12, 2015

The Electric Reliability Council of Texas (ERCOT), which manages 90 percent of Texas’ electric grid, has been busy. In the last two months of 2014, the agency released two very lengthy reports examining the future of a lower-polluting power grid in light of upcoming EPA clean air protections, in particular the Clean Power Plan. As the media described it, the reports did not provide the rosiest of outlooks for costs to Texans or electric reliability. But I think they are looking at the reports the wrong way.

The electric grid is changing. Innovative technologies – many of which are created right here in Texas – are lowering electricity bills and increasing energy independence. They are disrupting the way we produce and use electricity and they are changing the way ERCOT looks at grid reliability – albeit not in these two reports.

Cleantech entrepreneurs are at the helm of deciding Texas’ (and, let’s face it, America’s) energy future. And there are quite a few market opportunities outlined in the reports, if you look closely. Here are a few hidden in the report, plus other trends to keep an eye on: Read More »

Posted in Clean Energy, Clean Power Plan, Energy Efficiency, Grid Modernization, Renewable Energy, Texas / Read 3 Responses

Texas Grid Regulator Cites Very Little Burden in Complying with EPA’s Clean Power Plan

By Jim Marston / Published: December 18, 2014

Well, it didn’t take long before the Electric Reliability Council of Texas (ERCOT) released, at the request of Texas’ very political Public Utilities Commission, another report about the impacts of the Environmental Protection Agency’s (EPA’s) rules designed to protect public health.

This time ERCOT, which manages 90 percent of Texas’ electric grid, looked at the impact of seven EPA clean air safeguards on the electric grid, including the Cross State Air Pollution Rule (CSAPR), the Mercury Air Toxics Standard (MATS), the Regional Haze program (all of which go back before the Obama administration), the proposed Clean Power Plan, which would set the first-ever national limits on carbon pollution from existing power plants, and others. What was surprising to learn, though, is that after power companies in the state start complying with EPA’s other clean air protections, the proposed Clean Power Plan poses a minimal incremental impact to the power grid. We would only have to cut 200 megawatts of coal-fired generation, which equates to less than one coal-fired power plant. Read More »

Posted in Clean Energy, Clean Power Plan, Climate, Renewable Energy, Texas / Tagged EPA, ERCOT | Comments are closed

So, how do we Make Sustainability… Sustainable?

By Michael Panfil / Published: December 1, 2014

Last week the New York Times reported that, for the first time in history, clean energy resources like solar and wind are becoming cost competitive with conventional coal in some markets. This paradigm shift, where clean energy is beginning to compete head-to-head with traditional energy sources, calls for a change in perspective.

This ‘change in perspective’ is a movement toward what I would describe as “sustainable sustainability” – in which “sustainable” means the ability to stand the test of time, and “sustainability” refers to an environmentally responsible approach to making, moving, and using energy. In other words, we must find a way to ensure clean energy resources remain competitive in the marketplace and become ‘business as usual’ resources in the overall energy mix. The International Energy Agency (IEA) does a great job of explaining the need for this shift:

In the classical approach, variable renewables are added to an existing system without considering all available options for adapting it as a whole. This approach misses the point. Integration is not simply about adding wind and solar on top of ‘business as usual’. We need to transform the system as a whole to do this cost-effectively.”

Posted in Clean Energy, Climate, Demand Response, Energy Efficiency, Renewable Energy, Utility Business Models / Read 3 Responses

ERCOT Report on Clean Power Plan Misses the Big Picture

By Jim Marston / Published: November 19, 2014

We knew this was coming. Everyone knew. The power sector is the single largest source of carbon pollution in the U.S. and one of the largest in the world, yet there are no limits on how much carbon power plants can emit into our air. The U.S. Environmental Protection Agency’s Clean Power Plan (CPP) for new and existing power plants is urgently needed, is well within Texas’ reach, and can ensure that Texas (more so than other states) forges a strong and prosperous clean energy economy.

But this week, the Electric Reliability Council of Texas (ERCOT), which manages roughly 90 percent of Texas’ power grid, issued a report that overestimates the challenges posed by the CPP to the state’s electric grid reliability. Furthermore, it failed to appropriately recognize key tools available to ERCOT and the state to meet the proposed CPP.

Here’s a breakdown of what the report missed: Read More »

Posted in Clean Energy, Clean Power Plan, Energy Efficiency, Grid Modernization, Texas / Tagged ERCOT | Comments are closed