From 25b67ca5b95b62194b0b7df2e7f89a55575bd824 Mon Sep 17 00:00:00 2001 From: Martin Staadecker Date: Mon, 26 Jul 2021 16:39:21 -0700 Subject: [PATCH 1/4] Update transmission lifetime --- switch_model/wecc/get_inputs/get_inputs.py | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/switch_model/wecc/get_inputs/get_inputs.py b/switch_model/wecc/get_inputs/get_inputs.py index c340e15d3..2d2de25a4 100644 --- a/switch_model/wecc/get_inputs/get_inputs.py +++ b/switch_model/wecc/get_inputs/get_inputs.py @@ -367,7 +367,7 @@ def query_db(full_config, skip_cf): ], f""" SELECT trans_capital_cost_per_mw_km, - 20 as trans_lifetime_yrs, + 85 as trans_lifetime_yrs, 0.03 as trans_fixed_om_fraction FROM switch.transmission_base_capital_cost WHERE transmission_base_capital_cost_scenario_id = {transmission_base_capital_cost_scenario_id} From 3e1b3185bce17c76c768c8c7f30132491009f508 Mon Sep 17 00:00:00 2001 From: Martin Staadecker Date: Mon, 26 Jul 2021 16:43:29 -0700 Subject: [PATCH 2/4] Update changelog --- REAM Model Changelog.md | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/REAM Model Changelog.md b/REAM Model Changelog.md index 9afd194b5..8c4bfd753 100644 --- a/REAM Model Changelog.md +++ b/REAM Model Changelog.md @@ -15,4 +15,5 @@ Changes are listed from oldest (first line) to newest (last line of table). | #36 | May 2021 | Correct inputs to only list transmission lines in one direction. | | #56 | June 2021 | Convert 2020 predetermined build years to 2019 in `get_inputs.py` to avoid conflicts with 2020 period. | | #57 | June 2021 | Specify predetermined storage energy capacity in inputs (previously left unspecified). | -| #68 | June 2021 | Change financial params to 2018 dollars & 5% interest rate. Start using terrain multipliers (which now include the economic multiplier). | \ No newline at end of file +| #68 | June 2021 | Change financial params to 2018 dollars & 5% interest rate. Start using terrain multipliers (which now include the economic multiplier). | +| #90 | August 2021 | Change the lifetime of transmission lines from 20yr to 85yr | \ No newline at end of file From 3fe66724ca7c9d1862ebf67635649ebf0a58a58a Mon Sep 17 00:00:00 2001 From: Martin Staadecker Date: Tue, 28 Dec 2021 16:54:11 -0500 Subject: [PATCH 3/4] Improve changelog --- REAM Model Changelog.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/REAM Model Changelog.md b/REAM Model Changelog.md index 7a50b4870..101611b38 100644 --- a/REAM Model Changelog.md +++ b/REAM Model Changelog.md @@ -8,7 +8,7 @@ completed runs. Changes are listed from oldest (first line) to newest (last line of table). -| PR | Month | Change description | +| PR | Estimated Merge Time (check PR for exact date) | Change description | | ---- | --- | ---------------------| | #12 | March 2021 | Use the middle of the period instead of the start as the cutoff for retirement and predetermined buildout. | | #15 | March 2021 | Fix bug where storage costs where being over-counted. | From 576c0887ce496f44968f388d173495d7b2aaf336 Mon Sep 17 00:00:00 2001 From: Martin Staadecker Date: Tue, 28 Dec 2021 16:59:57 -0500 Subject: [PATCH 4/4] Add reference to reasoning behind 85 year lifetime --- switch_model/wecc/get_inputs/get_inputs.py | 1 + 1 file changed, 1 insertion(+) diff --git a/switch_model/wecc/get_inputs/get_inputs.py b/switch_model/wecc/get_inputs/get_inputs.py index 61ae7eab1..e906eeb5e 100644 --- a/switch_model/wecc/get_inputs/get_inputs.py +++ b/switch_model/wecc/get_inputs/get_inputs.py @@ -401,6 +401,7 @@ def query_db(full_config, skip_cf): "trans_lifetime_yrs", "trans_fixed_om_fraction" ], + # See Issue #80 for reasoning behind the 85 year lifetime. f""" SELECT trans_capital_cost_per_mw_km, 85 as trans_lifetime_yrs,