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 13 of 19
Money
Schemes, instalments, loans — what can I actually get?
North Carolina Solar Property Tax Exemption and Permitting Guide
Claim North Carolina 80% solar property tax exemptions. Learn local county building permits, rapid shutdown rules, Section 25D, and AHJ inspections.
North Dakota Mdu Solar Interconnection And Engineering Guide
Montana-Dakota Utilities North Dakota technical interconnection screening, anti-islanding compliance, and meter verification.
North Dakota Otter Tail Power Small Power Producer Guide
Otter Tail Power Small Power Producer Rider, energy buyback rates, and monthly customer-generator billing adjustments.
North Dakota Psc Net Metering And Avoided Cost Guide
North Dakota PSC 100kW customer-generation rules, monthly avoided-cost compensation, and dual-channel net billing.
North Dakota Xcel And Otter Tail Power Solar Interconnection Guide
Xcel Energy and Otter Tail Power North Dakota simplified distributed generation interconnection and disconnect switch rules.
Nv Energy Rule 15 Solar Interconnection And Permitting Guide
How does NV Energy Rule 15 regulate solar grid interconnection under IEEE 1547-2018 standards, AC disconnect rules, and PUCN oversight?
Ohio Aep And Firstenergy Solar Interconnection Guide
How do AEP Ohio and FirstEnergy review simplified Level 1 residential solar interconnection applications under UL 1741-SB standards?
Ohio Net Metering And Puco Chapter 4901 Guide
Learn how Ohio residential solar and storage qualify for the 30% Section 25D tax credit alongside NEC 690.12 and IEEE 1547-2018 grid compliance standards.
Ohio PUCO Level 1 25kW Solar Interconnection: Procedure Guide for Expedited Review
Understand Ohio's PUCO Level 1 interconnection process for solar and storage systems up to 25 kW. Review technical limits, application fees, and review timel...
Ohio PUCO Level 2 Commercial Solar Interconnection Guide
Understand Ohio's PUCO Level 2 interconnection rules for commercial solar and storage systems, including capacity limits, screening criteria, and review time...
Ohio PUCO Level 3 Study Process and Interconnection Guide: Understanding the 365-Day Review
Understand Ohio's PUCO Level 3 interconnection process for complex DERs, including the 365-day review cap, application fees, and cost billing for engineering...
Ohio PUCO OAC 4901:1-10-28 Solar Net Metering Guide: Sizing, Credits, and SRECs
This guide details Ohio's OAC 4901:1-10-28 net metering rules, effective April 8, 2024, covering the 120% sizing limit, SSO monetary credits, and SREC owners...
Ohio PUCO Rule 4901:1-22: Distributed Generation Interconnection Guide
Ohio Administrative Code Rule 4901:1-22-04 outlines uniform interconnection standards for distributed energy resources under PUCO rules, as of August 2026.
Ohio SREC Market and Certified Facility Registration Guide
Trade solar credits in the Ohio SREC market. Learn PUCO generation certification, PJM-EIS GATS tracking, multi-year lifespans, and revenue meters.
Oklahoma Pso And Oge Net Metering And Avoided Cost Guide
Public Service Company of Oklahoma (PSO) and OG&E small power producer tariffs (SPP), avoided-cost energy buyback rates, and monthly bill credits.
Oklahoma Pso And Oge Solar Interconnection Guide
Oklahoma Corporation Commission (OCC) Chapter 45 standard interconnection rules with PSO and OG&E, Level 1 expedited review, and witness testing.
Oregon Net Metering Rules And Oar 860 039 Guide
Why do Oregon net metering rules under OAR 860-039 and Section 25D federal clean energy tax credits not apply to UK solar installations?
Oregon PUC Level 1 OAR 860 039 0030 Interconnection Guide: Rules for 25 kW Inverter Systems
Understand Oregon's OAR 860-039-0030 Level 1 interconnection rules for inverter-based solar facilities up to 25 kW, including review timelines (August 2026).
Oregon PUC OAR 860-039-0010 Solar Net Metering: Capacity Limits and Rules
Understand Oregon PUC OAR 860-039-0010 net metering rules, including residential 25 kW and non-residential 2 MW capacity limits (August 2026).
Paying Cash vs Financing Solar: The 2026 Comparison
Four ways to pay, and the ranking changed when the federal credit expired: cash wins if you have it, a HELOC beats a dealer-fee loan, and TPO revived.
PECO and PPL Electric Pennsylvania Solar Net Metering Guide
Connect solar with PECO and PPL in Pennsylvania. Learn 1:1 retail net metering under Chapter 75, annual May true-ups, Level 1 review, and PTO.
Pennsylvania AEPS SREC Market and Trading Guide
Qualify for Pennsylvania AEPS SREC trading under Act 40. Learn PJM-EIS GATS tracking, 3-year compliance lifespans, and Section 25D tax credits.
Pennsylvania Net Metering And Pa PUC Chapter 75 Guide
What safety standards and 30% federal tax credit rules apply to Pennsylvania residential solar systems under UL 1741-SB and NEC 705.12?
Pennsylvania Peco And Ppl Solar Interconnection Guide
Understand Pennsylvania PECO and PPL Level 1 solar interconnection rules, including UL 1741-SB standards and mandatory AC disconnect locations.