Bill scenarios

Made by AI agents, with a person directing and checking the work.

How a typical Kansas Central home bill could change under different cost-sharing outcomes. Illustrations, not forecasts.

Bars of the added monthly residential charge from the construction-cost rider: $1.96 with Chisholm Trail half built, $3.91 fully built, $3.94 with both plants half built, and $7.88 with both fully built before service. — Construction-cost (CWIP) rider for the two gas plants: return at 8.45% on the construction balance, 45.37% assigned to residential customers. The rider can start no sooner than 365 days after construction begins (Chisholm Trail began May 12, 2026). Source: KCC 25-EKCE-294 order; 2024 HB 2527; KCC 7-7-25; EIA-861 2024.

During construction (CWIP rider)

Construction stage	Balance	Yearly charge (all customers)	Typical home, per month	Cross-check
Chisholm Trail (Viola) half built	$394M	$33.3M	$1.96	$2.21
Chisholm Trail (Viola) fully built	$789M	$66.6M	$3.91	$4.41
Both plants half built	$795M	$67.1M	$3.94	$4.44
Both plants fully built, before in service	$1,589M	$134.3M	$7.88	$8.89

Bars of added monthly bill under four cost-sharing scenarios for the two new gas plants: $0 if large loads cover them; $2.10-$3.03 at one quarter; $4.20-$6.06 at half; $8.39-$12.12 if existing customers carry all. — Illustrative added monthly cost for a typical Kansas Central home, by share of the new gas plants' fixed cost left on existing customers. Fuel, transmission and future rate cases not included. Source: out/scenarios.csv (KCC 7-7-25 costs; KCC 25-EKCE-294 allocation; EIA-861 2024 customers).

To turn a plant's capital cost into a yearly cost we use an assumed fixed charge rate of 9%-13% a year (return, depreciation, taxes, fixed upkeep); this is an assumption, not a filed number. We then assign 45.37% to homes, the residential share used for the construction rider ^[4], and divide by Kansas Central's 644,314 residential customers in 2024 ^[11]. As a cross-check, the 2025 rate case raised revenue $128M and a typical home's bill $8.47 a month ^[3]; scaling by that ratio gives results within about 15% of ours (last column).

Scenario	Assets	Yearly fixed cost	Typical home, per month	Share of 2024 average bill (high)	Cross-check (high)
1. Large loads cover the new plants (tariff works as designed)	gas plants only	$143M-$207M	$0	0.0%	$0.00
1. Large loads cover the new plants (tariff works as designed)	gas plants + Kansas Sky solar	$164M-$236M	$0	0.0%	$0.00
2. Existing customers carry one quarter	gas plants only	$143M-$207M	$2.10-$3.03	2.5%	$3.42
2. Existing customers carry one quarter	gas plants + Kansas Sky solar	$164M-$236M	$2.40-$3.47	2.8%	$3.91
3. Existing customers carry half	gas plants only	$143M-$207M	$4.20-$6.06	4.9%	$6.84
3. Existing customers carry half	gas plants + Kansas Sky solar	$164M-$236M	$4.80-$6.93	5.6%	$7.82
4. Existing customers carry all (upper bound)	gas plants only	$143M-$207M	$8.39-$12.12	9.9%	$13.67
4. Existing customers carry all (upper bound)	gas plants + Kansas Sky solar	$164M-$236M	$9.60-$13.86	11.3%	$15.63

Download: scenarios.csv, cwip_rider.csv.