THE SOURCE - Summer 2018 - 23

feature

Enhancing Resilience of
Critical Infrastructure with
Combined Heat and Power

C

By Gavin Dillingham and Carlos Gamarra, HARC Research
ombined Heat and Power (CHP), also known as cogeneration,
has been providing electric and thermal energy to facilities
for decades. For many years, factory and building owners and
operators have recognized the operational cost savings and
energy efficiency benefits of CHP to simultaneously produce

there is a high and constant thermal load
and there are high or potentially high
power prices in the near future.
CHP is compatible with a variety
of fuels, which can include biomass,
biogas, landfill gas, etc. However, the
greatest proportion of CHP applications
utilize natural gas. Eighty-four percent
of the 82.6 GW of installed CHP capacity
is fueled by natural gas1.

electric and thermal energy from a single fuel source at their

site. With over 4,400 installations, CHP makes up about 8 percent of generating capacity
in the United States. Much of the installed capacity is in the chemicals and refining sector,
though there is significant growth in other non-traditional CHP sectors, discussed below.

CHP has been in the news with the
growing realization that beyond energy
savings, it also provides significant
power resilience benefits. These systems
can keep the lights on when the power
grid goes down. CHP has demonstrated
effectiveness by withstanding large
storms such as Hurricane Sandy, and
more recently Hurricane Harvey.

for cooling with an absorption or steam
driven chiller, or thermal applications such
as high pressure steam, domestic hot
water, or sterilization. When determining
whether CHP is a good fit for a facility,
it is important to consider certain site
and operational characteristics. For
example, CHP is most likely to be the most
economical and efficient option when

What is CHP?
CHP is a type of distributed generation
that is located near or at the point of
energy consumption (Figure 1). The
system provides concurrent power and
thermal energy from a single source. This
single source is a prime mover, such as
a reciprocating engine or turbine that
drives a generator. The efficiency benefit
comes from the ability to capture the
waste heat to provide useful thermal
services. Heat from the prime mover is
recovered by a heat exchanger to be used

Figure 1: CHP Schematic.

Trends in CHP
CHP continues to receive a growing
market and policy interest in the
benefits that CHP provides. This can
in part be attributed to a growing
number of state and local utility
financial incentive programs, a federal
investment tax credit2, and adoption
of system interconnection standards
across states. Beyond the financial
incentives and standards, there is
also a growing demand in the market
for improved energy resilience, as
well as emission reductions. CHP has
been shown to provide both of these
benefits.

THE SOURCE | SUMMER 2018, VOL. 10, ISSUE 4 23



Table of Contents for the Digital Edition of THE SOURCE - Summer 2018

APGA Events
First Person
2018 Starts off with Gas Records
Energy Regulatory Update
The Result of Not Addressing Increasing Cybersecurity Risk
Conversation with an APGA Member
APGA Leads Charge to Lower Pipeline Rates to Match Lower Tax Rates
Legislative Outlook
Enhancing Resilience of Critical Infrastructure with Combined Heat and Power
The Pipeline
The Importance of Getting Involved with State and Local Building Code Developments
At Last
Advertisers’ Index/Advertiser.com
THE SOURCE - Summer 2018 - Intro
THE SOURCE - Summer 2018 - bellyband1
THE SOURCE - Summer 2018 - bellyband2
THE SOURCE - Summer 2018 - cover1
THE SOURCE - Summer 2018 - cover2
THE SOURCE - Summer 2018 - 3
THE SOURCE - Summer 2018 - 4
THE SOURCE - Summer 2018 - 5
THE SOURCE - Summer 2018 - 6
THE SOURCE - Summer 2018 - APGA Events
THE SOURCE - Summer 2018 - First Person
THE SOURCE - Summer 2018 - 9
THE SOURCE - Summer 2018 - 2018 Starts off with Gas Records
THE SOURCE - Summer 2018 - 11
THE SOURCE - Summer 2018 - Energy Regulatory Update
THE SOURCE - Summer 2018 - 13
THE SOURCE - Summer 2018 - The Result of Not Addressing Increasing Cybersecurity Risk
THE SOURCE - Summer 2018 - 15
THE SOURCE - Summer 2018 - 16
THE SOURCE - Summer 2018 - 17
THE SOURCE - Summer 2018 - Conversation with an APGA Member
THE SOURCE - Summer 2018 - 19
THE SOURCE - Summer 2018 - APGA Leads Charge to Lower Pipeline Rates to Match Lower Tax Rates
THE SOURCE - Summer 2018 - 21
THE SOURCE - Summer 2018 - Legislative Outlook
THE SOURCE - Summer 2018 - Enhancing Resilience of Critical Infrastructure with Combined Heat and Power
THE SOURCE - Summer 2018 - 24
THE SOURCE - Summer 2018 - 25
THE SOURCE - Summer 2018 - The Pipeline
THE SOURCE - Summer 2018 - The Importance of Getting Involved with State and Local Building Code Developments
THE SOURCE - Summer 2018 - 28
THE SOURCE - Summer 2018 - At Last
THE SOURCE - Summer 2018 - Advertisers’ Index/Advertiser.com
THE SOURCE - Summer 2018 - cover3
THE SOURCE - Summer 2018 - cover4
THE SOURCE - Summer 2018 - divider1
THE SOURCE - Summer 2018 - divider2
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