Guides — United States
Every guide answers its question in the first two sentences, dates every price, and names every source. 434 published, grouped into the questions buyers actually ask.
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Start with your question
What should I buy, and how do I not get cheated?
29 guides
FixesWhy is my inverter beeping?
5 guides
SystemsHow do I size it, and what changed with net billing?
86 guides
ElectricShould I go electric, and what will it really cost per km?
21 guides
MoneySchemes, instalments, loans — what can I actually get?
288 guides
ReportsWhat do the numbers say?
5 guides
All guides — page 16 of 19
Money
Schemes, instalments, loans — what can I actually get?
US FERC 18 CFR 35.37 & 35.42 Market-Based Rate Solar Filing Guide
This guide details US FERC 18 CFR 35.37 and 35.42 regulations for market-based rate solar filings, covering market power analyses and reporting (August 2026).
US FERC 18 CFR 35.41 Market Behavior Rules Guide
US FERC 18 CFR 35.41 rules for wholesale solar and storage sellers: unit operation, communications accuracy, and 5-year record retention (August 2026).
US FERC 18 CFR 35.42: Solar Change in Status Reporting Guide
Understand FERC's 18 CFR 35.42 rules for solar market-based rate sellers, including the 100 MW threshold and quarterly reporting deadlines (August 2026).
US FERC 18 CFR 385.206 Complaints: Rule 206 Guide for Wholesale Disputes
US FERC 18 CFR 385.206 (Rule 206) complaint guide: formal filing standards, financial impact quantification, and 20-day answer deadline (August 2026).
US FERC 18 CFR 385.207 Petitions: Declaratory Orders Guide
Understand US FERC Rule 207 (18 CFR 385.207) for petitions seeking declaratory orders to resolve disputes or clarify regulations (August 2026).
US FERC 18 CFR 385.213 Answers: A Rule 213 Guide
This guide explains US FERC Rule 213 (18 CFR 385.213), covering answer deadlines, content requirements, and default admissions (August 2026).
US FERC 18 CFR 385.214 Intervention Rule 214 Guide: Party Status and Late Filings
Understand FERC's 18 CFR 385.214 (Rule 214) for intervention, including motions, party status, and late filing criteria (August 2026).
US FERC 18 CFR 385.215: Guide to Pleading Amendment Procedures (August 2026)
This guide details US FERC 18 CFR 385.215 (Rule 215) procedures for pleading amendments, including 15-day opposition and effectiveness rules (August 2026).
US FERC 18 CFR 385.602 Settlement Offers: A Rule 602 Guide
US FERC 18 CFR 385.602 (Rule 602) settlement guide: evidence protections, 20-day comment deadlines, and uncontested certifications (August 2026).
US FERC 18 CFR 385.713 Rehearing Requests: Rule 713 Guide
Rule 713 (18 CFR 385.713) governs FERC rehearing requests. File within 30 days of a final order, include a Statement of Issues, or risk waiver (August 2026).
US FERC 18 CFR 388.112: Privileged CEII Treatment Guide
US FERC 18 CFR 388.112 guide: privileged and CEII filing rules, protective agreements, redactions, and 5-day document disclosure mechanics (August 2026).
US FERC 18 CFR 388.113: CEII Grid Interconnection Data Guide
Guide to US FERC 18 CFR 388.113 CEII rules for solar interconnection studies, data protections, and non-disclosure agreements (August 2026).
US FERC Form 556 Qualifying Facility Self-Certification Guide (August 2026)
Understand FERC Form 556 for US qualifying facility self-certification. This guide covers the 1 MW exemption, 90-day review, and protest windows (August 2026).
US IRS 26 CFR 1.45X-1 Clean Energy Manufacturing Rules Guide
Understand the US IRS 26 CFR 1.45X-1 rules for clean energy manufacturing credits. Learn about domestic production, qualified sales, related person elections...
US IRS 26 CFR 1.45X-3 Solar Manufacturing Credit Amounts Guide
This guide explains the US IRS 26 CFR 1.45X-3 regulations, detailing manufacturing credit amounts for solar cells, wafers, polysilicon, backsheets, inverters...
US IRS 26 CFR 1.48-13 Prevailing Wage and Apprenticeship Guide for Solar Tax Credits
Understand IRS 26 CFR 1.48-13 for solar tax credits. Learn prevailing wage, apprenticeship rules, the 1 MW exception, and penalties to secure the 30% ITC.
US IRS 26 CFR 1.48-14 Interconnection and Retrofitted Energy Property Guide
A guide to US IRS 26 CFR 1.48-14, covering qualified interconnection costs for lower-output energy properties, the 80/20 rule for retrofitted systems, and ru...
US IRS 26 CFR 1.48-9 Solar Energy Property and Process Heat Guide
Guide to US IRS 26 CFR 1.48-9, defining solar energy property for Section 48 investment tax credit. Covers eligible equipment like PV, solar thermal, and pro...
US IRS 26 CFR 1.48e-1 Low Income Communities Bonus Credit Guide
Understand the US IRS 26 CFR 1.48e-1 Low-Income Communities Bonus Credit Program, offering 10% or 20% ITC for qualified solar and wind projects.
US IRS 26 CFR 1.6417-1 Elective Payment Direct Pay Guide
US IRS 26 CFR 1.6417-1 guide: Direct Pay elective payments for tax-exempt solar, municipal clean energy, pre-filing registration, and Form 990-T.
US IRS 26 CFR 1.6418-1 Tax Credit Transferability Guide
US IRS 26 CFR 1.6418-1 guide: Tax credit transferability for commercial solar developers, cash payments, unrelated buyers, and pre-filing rules.
US IRS 26 USC 179D Commercial Building Energy Efficiency Deduction Guide
Understand the 26 USC 179D tax deduction for energy-efficient commercial buildings, including qualification, calculation, and allocation rules.
US IRS 26 USC 25D Residential Clean Energy Credit Guide
Guide to the 26 USC 25D Residential Clean Energy Credit. Learn eligibility, qualified expenses, 3kWh battery rules, and claiming the 30% federal tax credit.
US IRS 26 USC 45X Advanced Manufacturing Production Credit Solar Guide
Guide to IRS 26 USC 45X Advanced Manufacturing Production Credit: $0.04/W cell, $0.07/W module, $12/sqm wafer, and $3/kg polysilicon credit rates.