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Genset TCO
Ten-year cost of a standby or prime generator set: diesel vs gas vs dual fuel, fuel, maintenance, permitting, Tier 4 aftertreatment, run hours.
Method
TCO = capital + ten years of fuel and maintenance, undiscounted. Capital defaults are the midpoints of the Power Generation Enterprises 2026 pricing guide for a new 1,000 kW Tier 4 Final diesel ($580 to $720/kW base, $130 to $185/kW aftertreatment), as compiled for Gensets sold out to 2028. The diesel price is the EIA weekly US retail price via FRED. Fuel use at load, natural gas price, maintenance rates, permitting cost and gas-genset capital are not published in our sources, so the tool asks for them and shows the total as partial until they are entered. Unticking Tier 4 prices a Tier 2 emergency engine, which federal rule limits to 100 hours a year (50 non-emergency). The tool flags run hours beyond that.
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Default assumptions come from the Public Bid-Tab Price Book. Pro subscribers can save inputs. Institutional seats get the underlying series.
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