ADVANCED THERMOVOLTAIC SYSTEMS INC. (FORMERLY BERKEN ENERGY LLC)

Lobbying Spend

—

Filings

Firms Hired

Active Period

2021–2025

Lobbying Spend by Year

Client-reported lobbying expenses on LDA filings

Year	Lobbying Spend	Filings	Firms
2025	—	2	1
2024	—	4	1
2023	—	5	1
2022	—	4	1
2021	—	3	1

Lobbying firms retained by this client; amounts are client-reported expenses when available

Firm Name	Reported Spend	Filings
HB STRATEGIES	—	18

Government entities explicitly identified as targets in LDA filings

Government Body	Filings
HOUSE OF REPRESENTATIVES	8
SENATE	8

Most frequently reported lobbying issues

Issue Code	Description	Reports
Environment/Superfund	Environment/Superfund	9
Energy/Nuclear	Energy/Nuclear	9
Taxation/Internal Revenue Code	Taxation/Internal Revenue Code	9
Science/Technology	Science/Technology	1

ADVANCED THERMOVOLTAIC SYSTEMS INC. (FORMERLY BERKEN ENERGY LLC) — Lobbying Disclosure | Poliscope