Atlanta Gas Light Company Rate Selection Guide
Atlanta Gas Light (AGL) is Georgia's largest natural gas local distribution company, owning the pipes and meters but not selling gas. In Georgia's deregulated gas market, customers buy commodity and receive bills from certificated marketers, while AGL handles delivery, metering, and consumption data via its Energy Connection Center and marketer EDI.
Atlanta Gas Light Company Rate Schedule Comparison
| Schedule | Type | Rate | Best For |
|---|---|---|---|
| AGL Base / Distribution | Pass-Through (PSC-set) | Fixed Customer Charge + distribution + capacity components | All accounts — not shoppable, identical across marketers |
| DDDC | Capacity Charge | Based on annual DDDC factor; monthly % schedule | Largest AGL cost driver; lower via reduced winter peak |
| Commodity (Marketer) | Competitive Supply | ~$0.622/therm lowest commercial advertised (Jun 2026) | Shoppable component; compare on PSC Pricing Index |
| GRAM | Annual Adjustment | Up/down PSC review, filed each July | Distribution rate tracking |
Market Overview
AGL is the regulated LDC delivering gas and maintaining meters; customers buy the commodity and receive bills from Georgia PSC-certificated marketers. AGL's distribution charges are PSC-regulated pass-throughs on the marketer bill.
Need to pull your actual usage data to compare rates? See the Atlanta Gas Light Company Data Access Guide →
Community Choice Aggregation (CCA) Options
Customers choose among Georgia PSC-certificated marketers (Gas South, Georgia Natural Gas, SCANA Energy, Constellation, XOOM, and others) for commodity supply and billing. The PSC publishes a Marketers Pricing Index for comparison.
Current Rate Schedules
An AGL customer's bill has two parts: (1) the commodity (gas) charge set by the chosen competitive marketer (per therm), and (2) AGL's PSC-regulated distribution pass-through charges. AGL's pass-throughs include a fixed Customer/Service Charge, Ancillary Service (meter reading), Firm Distribution Charge, Peaking Service (Atlanta/Macon/Valdosta areas), Environmental Response Cost, Franchise Recovery, and the Dedicated Design Day Capacity (DDDC) charge — the dominant component, recalculated annually each August per meter and billed on a fixed monthly percentage schedule. Specific per-unit AGL charges are published in the AGL tariff (version effective May 1, 2026). Verified market commodity reference: lowest advertised commercial rate ~$0.622/therm and residential ~$0.639/therm as of June 2026.
Effective: May 1, 2026 · Full Tariff Book →
| Schedule | Type | Applicability | Structure | Rate |
|---|---|---|---|---|
| AGL Distribution / Base Charges (Pass-Through) | commercial | All AGL-served commercial and industrial accounts, billed via the marketer. | Fixed Customer/Service Charge + Ancillary Service (meter reading) + Firm Distribution Charge + applicable Peaking Service, Environmental Response Cost, and Franchise Recovery fees. PSC-regulated; identical regardless of marketer. | — |
| Dedicated Design Day Capacity (DDDC) Charge | commercial | All AGL meters; the dominant distribution cost component. | Annual capacity charge based on each meter's DDDC factor (peak coldest-day demand), recalculated every August, billed across the year on a fixed monthly percentage schedule (heaviest Jan-Mar, lightest summer). | — |
| Commodity (Gas) Charge — Competitive Marketer | commercial | Set by the customer's chosen certificated marketer. | Per-therm commodity rate (fixed or variable). Verified market reference: lowest advertised commercial rate ~$0.622/therm as of June 2026; shop via the Georgia PSC Marketers Pricing Index. | — |
| GRAM (Georgia Rate Adjustment Mechanism) | commercial | All AGL distribution customers. | Annual PSC mechanism (in use since 2017) that adjusts AGL's base distribution rates up or down following a comprehensive review; AGL files proposed rates each July. | — |
Rate Recommendations by Use Case
Commercial facility on AGL distribution
Shop the commodity rate and manage winter peak demand to control both bill components.
Only the commodity rate is shoppable; the DDDC distribution charge is driven by coldest-day peak, so reducing winter peak lowers the largest AGL component over time.
- Compare marketers on the Georgia PSC Pricing Index
- Weatherize and manage heating load to reduce winter peak / DDDC factor
- Verify AGL pass-through charges appear correctly on marketer bills
Industrial / high-volume gas user
Negotiate volume-based commodity pricing and request interval consumption data from AGL.
High-volume users have leverage on per-therm commodity pricing, and interval/consumption data supports demand management against the DDDC capacity charge.
- Solicit competitive per-therm quotes for your annual volume
- Request hourly/15-minute data for eligible commercial meters via 800.599.3770
- Target coldest-day peak reduction to lower the DDDC factor
Multi-site portfolio / energy manager
Centralize AGL/marketer data via aggregators and standardize marketer contracts across sites.
Manual per-site data requests do not scale; data platforms like Nectar consolidate consumption and billing for benchmarking, while a standardized marketer contract simplifies commodity cost.
- Use Nectar connectors that support AGL — see docs.nectarclimate.com
- Maintain customer authorizations on file for each site
- Benchmark DDDC factors across sites to find peak-reduction targets
Third-party / certificated marketer integration
Establish EDI trading-partner connectivity with AGL for automated enrollment, meter-read, and billing data.
AGL has no public API or Green Button; certificated-marketer EDI (NAESB X12 814/819/810/820) is the only automated, scalable data channel.
- Confirm Georgia PSC marketer certification
- Contact edimsg@aglresources.com to execute an EDI Trading Partner Agreement
- Set up VAN or SFTP/AS2 connectivity and complete sandbox testing
Historical Rate Trends
AGL's distribution rates are adjusted annually through the Georgia Rate Adjustment Mechanism (GRAM), in use by the PSC since 2017, with AGL filing proposed rates each July. DDDC factors are recalculated every August. The commodity portion is set independently by competitive marketers and moves with wholesale gas markets.
May 1, 2026
AGL tariff updated to version effective May 1, 2026, containing current distribution rate schedules and DDDC provisions.
n/aAugust 1, 2026
Annual DDDC factor recalculation per meter based on prior-winter peak usage (scheduled).
n/aOverall trend: Distribution rates adjusted up or down via annual GRAM review for infrastructure, safety, and compliance investment; commodity rates fluctuate with wholesale natural gas prices.
Next expected change: Next GRAM filing expected July 2026; next DDDC factor recalculation August 2026.
Cost Optimization Strategies
C&I customers manage AGL gas cost on two fronts: reducing the DDDC capacity charge by lowering coldest-day peak demand, and minimizing the commodity rate through competitive marketer selection.
Reduce winter peak (DDDC) demand
For: All AGL accounts
Lower coldest-day peak usage through weatherization, controls, and load management to bring down the annually-recalculated DDDC factor and the dominant distribution charge.
Shop the commodity rate
For: All AGL accounts
Compare certificated marketers on the Georgia PSC Marketers Pricing Index and lock a competitive per-therm rate (e.g., ~$0.622/therm lowest commercial advertised, Jun 2026).
Request interval/consumption data for analysis
For: C&I accounts
Obtain consumption data (and interval data for eligible commercial meters) from the Energy Connection Center to benchmark usage, validate marketer bills, and target efficiency.
Use aggregators for portfolio visibility
For: Multi-site C&I
For multi-site portfolios, use a data platform such as Nectar (docs.nectarclimate.com) to consolidate AGL/marketer data for benchmarking and anomaly detection.
To implement these strategies, you need your 15-minute interval data. Learn how to download Atlanta Gas Light Company interval data →
Deregulated Market Shopping
In Georgia's deregulated gas market, the cost lever customers control is the per-therm commodity rate from competitive marketers — AGL's distribution charges are fixed by the PSC and identical across marketers. Customers compare certificated marketers via the Georgia PSC Marketers Pricing Index. As of June 2026, the lowest advertised commercial rate was about $0.622/therm and the lowest residential about $0.639/therm.
How to Compare Atlanta Gas Light Company Suppliers
- 01Pull your annual therm usage and DDDC factor (from a recent bill or AGL)
- 02Compare certificated marketers on the Georgia PSC Marketers Pricing Index
- 03For C&I, request volume-based quotes; fixed vs. variable per-therm pricing
- 04Confirm contract term, fees, and whether AGL pass-through charges are shown separately
Contract Terms for Atlanta Gas Light Company Supply Agreements
- Fixed per-therm rates commonly 6-24 months
- Variable / market-indexed rates that change monthly
- C&I contracts may include volume commitments and swing tolerances
Common Pitfalls When Shopping Atlanta Gas Light Company Rates
- AGL DDDC and base charges are NOT shoppable — only the commodity rate is
- Variable rates can rise sharply after introductory periods
- Early-termination fees on fixed contracts
- Confirm the marketer's customer-service charge in addition to the per-therm rate
Frequently Asked Questions
Why doesn't Atlanta Gas Light send us a bill?▾
Because Georgia has a deregulated natural gas market. AGL is the local distribution company that owns the pipes, reads the meter, and maintains the system, but does not sell gas. You buy gas from a Georgia PSC-certificated marketer (such as Gas South, Georgia Natural Gas, SCANA Energy, or Constellation), and that marketer issues your bill, including AGL's pass-through distribution charges.
How does a commercial customer get consumption (usage) data from AGL?▾
Submit a Commercial Project Data Request through atlantagaslight.com/business or contact the Energy Connection Center (800.599.3770 / G2constructionoperat@southernco.com) with your service-location number and date range. AGL provides historical consumption (typically up to 3 years) as CSV/spreadsheet, usually within 5-10 business days. Hourly or 15-minute granularity may be available for eligible commercial meters on request.
Can a third party (consultant or aggregator) access our gas data?▾
Yes, with written customer authorization. Options are: (1) request consumption data directly from AGL's Energy Connection Center, (2) work through your certificated marketer, or (3) use a data platform — Nectar provides API access to this utility's billing and consumption data (see docs.nectarclimate.com). AGL has no public utility API and no Green Button program, so automated access flows through marketer EDI or platforms like Nectar.
What is the DDDC charge on our bill?▾
Dedicated Design Day Capacity (DDDC) is AGL's distribution capacity charge — the cost of reserving pipeline capacity for your peak (coldest-day) demand. AGL recalculates each meter's DDDC factor every August based on prior-winter peak usage, and the annual capacity charge is billed across the year on a fixed monthly percentage schedule (heaviest in winter). It is the largest AGL pass-through cost driver for most accounts.
How do we lower the AGL portion of our gas bill versus the marketer portion?▾
AGL's distribution (base/DDDC/pass-through) charges are set by the Georgia PSC and are the same regardless of marketer — you cannot shop those. What you CAN shop is the commodity (per-therm) rate from competitive marketers; as of June 2026 the lowest advertised commercial rate in Georgia was about $0.622/therm. Reducing winter peak usage lowers your DDDC factor over time, and choosing a competitive marketer rate reduces the commodity portion.
Automate Atlanta Gas Light Company Rate Analysis with Nectar
Nectar continuously monitors your Atlanta Gas Light Company rate options and alerts you when a better schedule is available. Save 10-30% on energy costs.
Nectar for Energy & Sustainability Teams
Managing utility costs for commercial or industrial buildings? Nectar offers a free rate analysis — we'll review your current rate schedules and identify where switching tariffs or shifting load can save 10-30%.
Get a Free Rate AnalysisNectar for Energy Brokers & Consultants
Advising clients on rate optimization? Nectar works with energy consultants who need reliable interval data and automated rate comparison tools.
Partner with Us