Caitlin Marquis

Recent Posts

Advanced Energy Buyers Group Brings Voice of the Customer to Solar Trade Case and Grid Pricing Proposal

Posted by Caitlin Marquis on Nov 8, 2017 11:00:00 AM


Just over a month ago, AEE launched a new group of advanced energy users, called the Advanced Energy Buyers Group, led by member companies including Microsoft, Amazon, Walmart, and others. The concept is simple: Just as AEE is the business voice of advanced energy, the Advanced Energy Buyers Group serves as the policy voice of energy users. In practice, that means the Buyers Group will weigh in on a range of energy policy issues that matter to companies on the customer side of the meter, specifically on behalf of companies seeking ways to increase their use of advanced energy.

In the month since its launch, the Buyers Group has kept busy on two high profile issues, both with big implications for large consumers: the Section 201 Solar Trade Case now before the U.S. International Trade Commission and the “Grid Pricing Rule” proposed by the Department of Energy late last month and under consideration by the Federal Energy Regulatory Commission.

Let’s dig in.

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Topics: Federal Policy, Advanced Energy Buyers Group

Renewable Energy Tariffs, Part Two: Meeting the Needs of Nonparticipating Customers

Posted by Caitlin Marquis on Aug 23, 2017 4:42:42 PM

This is Part Two of a two-part blog series on design of utility renewable energy tariffs. Part One (last week) addressed the needs of participating corporate customers, and Part Two considers the needs of nonparticipating customers.


Last week, we dug into the topic of renewable energy tariffs from the lens of prospective participants, listing out some of the considerations that make the difference between success and failure when it comes to customer uptake. In this post, we turn the tables and look at the same programs from a different perspective—that of nonparticipating customers. This post draws from the lessons offered by AEE Institute’s recent paper, Making Corporate Renewable Energy Purchasing Work for All Utility Customers, which looked at case studies of eight programs across seven states.

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Topics: State Policy

Renewable Energy Tariffs, Part One: Meeting the Needs of Participating Customers

Posted by Caitlin Marquis on Aug 17, 2017 9:14:00 AM

This post is Part One of a two-part series on design of utility renewable energy tariffs. Part One addresses the needs of participating customers, and Part Two (next week) considers the needs of nonparticipating customers.


Followers of the advanced energy sector are, by now, very familiar with the trend of leading companies, cities, universities, and other organizations choosing to source their electricity from renewable energy. To date, the majority of renewable energy projects contracted to meet this demand have been in restructured states, where companies face few regulatory barriers to signing a power purchase agreement (PPA). That’s not to say, however, that states with traditionally regulated utilities are doomed to miss out on the headline-grabbing, job-creating, tax-income-generating benefits of corporate renewable energy deals. On the contrary, utilities in vertically integrated states are developing programs to allow voluntary renewable energy procurement, often termed renewable energy tariffs, or “green” tariffs. But the experience to date of these renewable energy tariffs has been mixed, with some failing to generate much interest from corporate purchase because of their cost or terms, and others questioned for their impact on utility customers who are not part of the program.

A recent policy brief from AEE and new report from AEE Institute consider best practices for design of renewable energy tariffs that meet the needs of both corporate participants and for other utility customers. This post explains what we mean by “renewable energy tariffs,” and walks through the needs and preferences of corporate participants. Next week’s post will dive into detail on designing programs with all customers in mind, including nonparticipants.

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Topics: State Policy


Posted by Caitlin Marquis on Mar 1, 2017 10:01:00 AM

This post is one in a series featuring the complete slate of advanced energy technologies outlined in the report This Is Advanced Energy


Wind turbines convert the kinetic energy of wind into electricity. With more than 46,000 operating turbines totaling over 62 GW of wind capacity, the United States ranks first globally in wind power generation and second in installed capacity. Large-scale turbines typical of wind farms range in size from 100 kW to several MW each, while distributed wind turbines range from a few hundred watts to about 100 kW, and typically power homes, farms, or small businesses. The upwind three-blade design dominates the industry for large-scale wind, while some smaller turbines feature novel designs.

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Topics: This Is Advanced Energy


Posted by Caitlin Marquis on Feb 21, 2017 11:04:00 AM

This post is one in a series featuring the complete slate of advanced energy technologies outlined in the report This Is Advanced Energy

5.6 CNG-LNG-Vehicles-credit-Ford-Motor-Company-290881-edited.jpg

Natural gas vehicles (NGVs) are internal combustion engine vehicles designed to run on either Compressed Natural Gas (CNG) or Liquefied Natural Gas (LNG). There are three basic categories of NGVs: dedicated, bi-fuel, and dual-fuel. Dedicated NGVs are the most efficient as they are designed from the ground up to run only on natural gas. In contrast, both bi-fuel and dual-fuel NGVs have two separate tanks, one for natural gas and another for diesel or gasoline. Bi-fuel NGVs can run on either natural gas or a petroleum fuel (either diesel or gasoline), switching automatically when one fuel runs out. Bi-fuel technology is typically used in light-duty vehicles. Dual-fuel NGVs run on a mixture of natural gas and diesel. They rely mostly on natural gas, but use a small amount of diesel to aid in fuel ignition. Dual-fuel NGVs are more expensive, but their higher efficiency makes them an attractive option for heavy-duty vehicles. Most NGVs rely on less-expensive CNG, but some vehicles used for long-haul trucking run on LNG because its higher energy density increases driving range.

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Topics: This Is Advanced Energy