Add NY/RI default residential rate wiki pages and NY comparison

- Add utility overview and default rate field guides for: PSEG-LI (194),
  RG&E (1-RSS), NYSEG (SC1), National Grid NY (SC1), O&R (1), Central
  Hudson (1), Rhode Island Energy (A-16). Each rate page includes
  disclaimer, metadata, overview, Quick Reference table, charge
  breakdown, example bill, full tariff JSON, Understanding the JSON,
  and summary.
- Add NY default rate comparison page: cross-utility charge table and
  qualitative discussion (rate-case revenue vs adjustments vs policy
  charges).
- Update wiki index and utilities index with new utilities and
  ny-comparison link.

Co-authored-by: Cursor <cursoragent@cursor.com>

Author: jpvelez

docs/wiki/index.md

@@ -25,23 +25,62 @@ This wiki explains what all of that means so you can actually use the data.
 
 ## Utilities Covered
 
-| Utility                                                 | Region   | Guides Available |
-| ------------------------------------------------------- | -------- | ---------------- |
-| [Consolidated Edison (ConEd)](utilities/coned/index.md) | New York | EL1 Residential  |
+| Utility                                                       | Region       | Guides Available              |
+| ------------------------------------------------------------- | ------------ | ----------------------------- |
+| [Consolidated Edison (ConEd)](utilities/coned/index.md)       | New York     | EL1 Residential               |
+| [PSEG Long Island](utilities/psegli/index.md)                  | New York     | Rate 194 (default)           |
+| [RG&E](utilities/rge/index.md)                                | New York     | 1-RSS (default)              |
+| [NYSEG](utilities/nyseg/index.md)                             | New York     | SC1 (default)                |
+| [National Grid – NY](utilities/nimo/index.md)                  | New York     | SC1 (default)                 |
+| [Orange & Rockland](utilities/or/index.md)                     | New York     | Rate 1 (default)              |
+| [Central Hudson](utilities/cenhud/index.md)                   | New York     | Rate 1 (default)              |
+| [Rhode Island Energy](utilities/rie/index.md)                  | Rhode Island | A-16 (default)                |
+
+See also [NY default rate comparison](utilities/ny-comparison/index.md) for a cross-utility charge comparison.
 
 ## Structure
 
 ```
 wiki/
 ├── utilities/
-│   └── coned/                    # Consolidated Edison
-│       ├── index.md              # ConEd overview
-│       └── residential-el1/      # EL1 Residential tariff
-│           ├── index.md          # Tariff field guide
-│           ├── supply-charges.md # How supply charges work
-│           ├── delivery-adjustments.md
-│           ├── riders.md
-│           └── variable-rates-api.md
+│   ├── coned/                    # Consolidated Edison
+│   │   ├── index.md
+│   │   ├── residential-el1/
+│   │   │   └── index.md
+│   │   ├── delivery-adjustments.md
+│   │   ├── riders.md
+│   │   ├── supply-charges.md
+│   │   └── variable-rates-api.md
+│   ├── ny-comparison/            # NY default rate comparison
+│   │   └── index.md
+│   ├── psegli/                   # PSEG Long Island
+│   │   ├── index.md
+│   │   └── residential-194/
+│   │       └── index.md
+│   ├── rge/                      # RG&E
+│   │   ├── index.md
+│   │   └── residential-1-rss/
+│   │       └── index.md
+│   ├── nyseg/                    # NYSEG
+│   │   ├── index.md
+│   │   └── residential-sc1/
+│   │       └── index.md
+│   ├── nimo/                     # National Grid NY
+│   │   ├── index.md
+│   │   └── residential-sc1/
+│   │       └── index.md
+│   ├── or/                       # Orange & Rockland
+│   │   ├── index.md
+│   │   └── residential-1/
+│   │       └── index.md
+│   ├── cenhud/                   # Central Hudson
+│   │   ├── index.md
+│   │   └── residential-1/
+│   │       └── index.md
+│   └── rie/                      # Rhode Island Energy
+│       ├── index.md
+│       └── residential-a16/
+│           └── index.md
 ```
 
 ## Contributing

docs/wiki/utilities/cenhud/index.md

@@ -0,0 +1,36 @@
+# Central Hudson Gas & Electric (Central Hudson)
+
+**LSE ID**: 2033
+**Region**: Mid-Hudson Valley, NY (Ulster, Dutchess, and surrounding counties)
+**Service Types**: Electricity, Gas
+
+## Overview
+
+Central Hudson Gas & Electric Corporation serves the Mid-Hudson Valley, including Ulster, Dutchess, and surrounding counties. The default residential electric rate is Rate 1: flat, non-TOU, with customer charge, energy (delivery), MFC components (lost revenue, base supply, administration), market price and purchased power adjustments, and standard NY policy riders.
+
+## Service Territory
+
+Single primary territory (territoryId 2285) for default residential.
+
+## Residential Tariffs
+
+| Tariff | Name       | Type    | Key Feature        | Guide                              |
+| ------ | ---------- | ------- | ------------------ | ---------------------------------- |
+| 1      | Residential | Default | Flat; MFC split into 3 components | [View Guide](residential-1/index.md) |
+
+## Key Characteristics
+
+- **Flat rate**: No TOU; single energy charge for delivery.
+- **MFC**: Allocated into lost revenue, base supply, and administration charges.
+- **Supply**: Market Price Charge, Market Price Adjustment, Purchased Power Adjustment, Electric Bill Credit (lookups or variable).
+- **NY riders**: RDM, Transition, SBC, EAM, RAM, CBC (solar), low-income discount (tiered).
+
+## Regulatory Context
+
+- NY PSC. Revenue decoupling, Clean Energy Standard, system benefits, and low-income programs apply.
+
+## Data Sources
+
+- [Central Hudson Rates](https://www.cenhud.com/)
+- [NY PSC](https://www.dps.ny.gov/)
+- Arcadia Signal API (LSE ID: 2033)