1. Reciprocating Engines
Vic Ranalletta, P.E.
Senior Project Manager
Burns & McDonnell

2. What Provides the Following?
• 10 MW
• 20-40% Capacity Factor
• Good Part Load Heat Rate
a t oad eat ate
• Black Start
• 5 Mi
Minute S
Start
• Reactive Power and Frequency Support
q y pp

3. Natural Gas Engine Generators
Caterpillar 6 5 MW
6.5
Wärtsilä 8.4 – 9.3 MW
Mitsubishi 3.6 – 5.5 MW

4. Why Do We Need Recip Engines?
The sun doesn’t always shine
and
d
the wind doesn’t always blow.

5. Natural Gas Engine Generators
• Reciprocating Engine Power Project Benefits
– Multiple Shafts
– Minimal Air Temperature Degradation
– Minimal Altitude Degradation
– Near Zero Water Usage (Radiator Cooling)
– CHP Potential (Jacket Water and/or Exhaust)

6. Large Scale Natural Gas
Reciprocating Plants
MID GEUS
Midwest Energy
gy
Lea County STEC
Proposed Engine Plant
p g
Existing Engine Plant

7. Natural Gas Engine Generators
Engine plant “sweet spot”

8. Natural Gas Engine Generators