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BESS Emission Reduction Dashboards

MADD methodology applied to Chile's National Electricity System (SEN).

Methodology
Long-form explainer

MADD methodology, in one battery, one week

Step-by-step walkthrough of the displacement methodology with real audited data — anchored on AES Atacama BESS, week of 1–7 Sep 2025. Interactive merit-order diagram, hour-by-hour CSV exports, 1:1 mapping to the Python implementation.

26
equations
11
interactive figures
5
downloadable CSVs
Emission Reductions — Ex-Ante
Ex-Ante · RHO La Ligua

RHO La Ligua — 90 MW / 360 MWh

BESS LFP 4h — Ex-ante emission reductions (MADD §5.4). Analysis 2024 + 2025.

0.3918
EF 2024
0.4849
EF 2025
47,614
tCO₂ RED 2024
58,758
tCO₂ RED 2025
Ex-Ante · DAS

DAS Diego de Almagro Sur — 228 MW / 912 MWh

BESS LFP 4h — Ex-ante emission reductions (MADD §5.4). Analysis 2024 + 2025.

0.3790
EF 2024
0.4495
EF 2025
117,070
tCO₂ RED 2024
138,487
tCO₂ RED 2025
Ex-Ante · Alianza

Alianza — 90 MW / 450 MWh

BESS LFP 5h — Ex-ante emission reductions (MADD §5.4). Analysis 2024 + 2025.

0.3894
EF 2024
0.4869
EF 2025
59,146
tCO₂ RED 2024
73,756
tCO₂ RED 2025
Ex-Ante · Taqui

Taqui — 20 MW / 80 MWh

BESS LFP 4h — Ex-ante emission reductions (MADD §5.4). Analysis 2024 + 2025.

0.3317
EF 2024
0.4494
EF 2025
9,225
tCO₂ RED 2024
12,468
tCO₂ RED 2025
Ex-Ante · AES Solar

AES Atacama Solar — 150 MW / 600 MWh

PV+BESS LFP 4h (Atacama) — Ex-ante emission reductions (MADD §5.4). Analysis 2024 + 2025.

0.3936
EF 2024
0.4760
EF 2025
80,102
tCO₂ RED 2024
96,597
tCO₂ RED 2025
Ex-Ante · AES BESS

AES Atacama BESS — 100 MW / 400 MWh

Stand-alone BESS LFP 4h (Atacama) — Ex-ante emission reductions (MADD §5.4). Analysis 2024 + 2025.

0.3940
EF 2024
0.4842
EF 2025
53,641
tCO₂ RED 2024
65,743
tCO₂ RED 2025
Ex-Ante · ENEL Finis Terrae

ENEL Finis Terrae — 100 MW / 460 MWh

BESS Li-ion 4.6h (Antofagasta, COD Apr 2028) — Ex-ante emission reductions (MADD §5.4). Analysis 2024 + 2025 as historical proxy.

0.3902
EF 2024
0.4868
EF 2025
60,686
tCO₂ RED 2024
75,513
tCO₂ RED 2025
Emission Reductions — Ex-Post
Ex-Post

Ex-Post Calculation — Existing BESS Fleet

Emission reduction (RED) calculation for the currently operating BESS fleet in the SEN, based on real CEN data.
Overview

BESS Operations · Overview

Consolidated view of the SEN BESS portfolio — installed capacity, operations and avoided emissions by facility.

815,010
tCO₂ RED 2025
0.4129
tCO₂/MWh EF
Projections
Ex-Ante

Ex-Ante Projection — BESS Under Construction

Emission reduction projection for the BESS fleet declared under construction, based on design parameters.
CEN Context — Electricity Market
Market Analysis

CEN Batteries — SEN Context

Renewable curtailment, generation by technology, BESS injection and the relationship between curtailment and thermal dispatch in the SEN.

2023–2025
coverage
49
active BESS
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