© BIOFerm™ Energy Systems 2016

Akron, Ohio—KB BioEnergy’s anaerobic digester

was first constructed in 2007 to process

wastewater sewage sludge from the City’s

municipal treatment plant. An expansion of the

facility in 2013 now allows the digester to

process 100% of the sewage sludge from the

wastewater treatment facility and create

additional renewable energy. The system was

built as a joint venture between the City of

Akron and KB BioEnergy (formerly KB Compost

Services). The plant is a Schmack EUCO® Titan

system and is the first of its kind to be installed

in the U.S. by the Viessmann Group.

Benefits at a Glance

� Renewable electricity generation

� Production of pelletized fertilizer

� Odor reduction

� Savings on electricity purchasing

� Decreased carbon footprint

Phase I + Phase II EUCO® Titan Plant:

� 3 horizontal plug-flow EUCO® digesters with

a combined capacity of 696,000 gallons

� 3 complete mix COCCUS® digesters with a

combined capacity of 1,900,000 gallons

� 1 All-in-One (AIO) technical container with a

Jenbacher Type 2 J208 GS combined heat

and power unit

� 3 additional 600 kW MWM engines

Feedstock

The original system was designed to treat up to

7,000 dry tons of biosolids per year. After the

expansion in 2013, however, the facility can now

handle 15,000 tons a year. The biosolids have a

solids content up to 30%.

Power Production—Phase I (2007)

330 kWel continuous power engine (combined

heat and power unit)

� 330 kW electrical capacity

� 395 kW thermal capacity

Average annual energy production:

� 2,890,800 kWh electrical production

� 11,796 MMBTU thermal production

The estimated energy from the CHP could:

� Provide electricity to 256 homes

� Heat 269 homes per year

Power Production—Phase II (2013)

Additional 1.8 MWel capacity (1 of the 3 600 kW

MWM engines is a back-up)

� 1.2 MW electrical capacity (normal operation)

� 1.3 MW thermal capacity (normal operation)

Additional average annual energy production

� 10,530 MWH electrical production

� 28,868 MMBTU thermal production

The estimated produced added energy could:

� Provide electricity to 932 homes

� Heat 878homes per year

Financials

Phase I: $7 million capitol investment

� Offset by the City’s investment of $835,0000

funded by annual compost sales of $250,000

� Offset by a $9.6 million federal renewable tax

credit

� Remainder was funded by KB BioEnergy

Phase II: $32 million

BIOFermTM Energy Systems is

a Wisconsin-based renewable

energy company providing

North American operations

with sustainable waste

management technology

through anaerobic digestion.

BIOFermTM is a member of

the Viessmann Group, a $2.8

billion family owned business

since 1917. Viessmann has

installed over 350 AD facilities

through the biogas companies

of the Viessmann Group.

BIOFermTM Energy Systems

was founded in 2007 and now

offers all biogas technologies

of the Viessmann Group.

About BIOFerm™

References

Case Study KB BioEnergy, Akron, OH

BIOFermTM Energy Systems is

a Wisconsin-based renewable

energy company providing

North American operations

with sustainable waste

management technology

through anaerobic digestion.

BIOFermTM is a member of

the Viessmann Group, a $2.8

billion family owned business

since 1917. Viessmann has

installed over 400 AD facilities

through the biogas

companies of the Viessmann

Group. BIOFermTM Energy

Systems was founded in

2007 and now offers all

biogas technologies of the

Viessmann Group.

About BIOFerm™