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Distributed generation and rooftop solar

Last verified: 2026-10-30 · Status: Changing

Resolución SIE-007-2026-REG of 19 January 2026 replaced the old rooftop solar rules. Distributors have 45 days to answer or the request is deemed approved, the 15% circuit cap is gone if studies support it, and year end surplus credit rises from 75% to 100%. Users under 10 kW now face a charge for use of the network.

USD figures use the Banco Central de la República Dominicana reference selling rate of RD$60.9007 per US dollar, as shown on its home page on 30 October 2026, rounded to the cent.

Key facts

Maximum approval time, then deemed approved	45 daysSIE-007-2026-REG, as of 2026-10-30 · in force
Annual credit for surplus energy	100 %SIE-007-2026-REG, as of 2026-10-30 · in force
Network use charge applies under	10 kWSIE-007-2026-REG, as of 2026-10-30 · in force
Circuit penetration limit	Eliminated, subject to studies SIE-007-2026-REG, as of 2026-10-30 · in force

The rule

1. The SIE issued the Regulation for the Approval, Interconnection and Operation of Distributed Generation Facilities, covering request, approval, interconnection and operation of projects that connect to medium or low voltage networks.Resolución SIE-007-2026-REG, art. 1, 2026-01-19 official text · verified 2026-10-30 · changed: New regulation issued 19 January 2026, replacing the 2012 framework.

2. The regulation enters into force 90 working days after the date of the resolution.Resolución SIE-007-2026-REG, art. 3, 2026-01-19 official text · verified 2026-10-30

3. Every distributed generation project whose processing starts after 1 February 2026 must follow the new regulation.Resolución SIE-007-2026-REG, art. 5 paragraph III, 2026-01-19 official text · verified 2026-10-30

4. The tariff scheme for the network use charge starts 90 working days after the date of the resolution.Resolución SIE-007-2026-REG, art. 5 a, 2026-01-19 official text · verified 2026-10-30

5. The digital platform must be enabled by 30 October 2026 at the latest. Until the tools are in place, current procedures continue.Resolución SIE-007-2026-REG, art. 5 b and paragraph I, 2026-01-19 official text · verified 2026-10-30

6. The regulation gets a full review every 3 years, and the SIE reports on implementation at 3 and 6 months.Resolución SIE-007-2026-REG, art. 4 and art. 5 paragraph II, 2026-01-19 official text · verified 2026-10-30

7. Existing interconnection contracts keep their current conditions until the agreed expiry.SIE note on the regulation, published by the Presidency, summary of SIE-007-2026-REG, 2026-01-28 official text · verified 2026-10-30

8. Approval time falls from as much as 4 months to a maximum of 45 days. If the distributor does not answer in that period, the request is approved automatically.SIE note on the regulation, summary of SIE-007-2026-REG, 2026-01-28 official text · verified 2026-10-30

9. The 15% penetration limit per circuit is eliminated, as long as network safety is guaranteed through technical studies.SIE note on the regulation, summary of SIE-007-2026-REG, 2026-01-28 official text · verified 2026-10-30

10. The distributor installs the bidirectional meter at no cost. If the user buys it directly, it must be refunded after verification by Indocal.
Cost to do it: Meter at no charge to the user.SIE note on the regulation, summary of SIE-007-2026-REG, 2026-01-28 official text · verified 2026-10-30

11. Annual credit for surplus energy injected into the network is paid back at 100%, instead of the previous 75%.SIE note on the regulation, summary of SIE-007-2026-REG, 2026-01-28 official text · verified 2026-10-30

12. A user may choose a no injection mode after notifying the distributor, at no cost.SIE note on the regulation, summary of SIE-007-2026-REG, 2026-01-28 official text · verified 2026-10-30

13. A network use charge in favor of the distributor applies only to new projects with demand under 10 kW, or to current contracts when they expire.
Cost to do it: The amount of the charge was not found in official text, so it is omitted.SIE note on the regulation, summary of SIE-007-2026-REG, 2026-01-28 official text · verified 2026-10-30

Point	Before	Under SIE-007-2026-REG
Approval time	Up to 4 months	Up to 45 days, then automatic
Circuit cap	15%	None, subject to studies
Annual surplus credit	75%	100%
Bidirectional meter	Not stated in the note	Free from the distributor
Network use charge	None stated	Only under 10 kW, or on contract expiry

Old and new rules, according to the SIE

Worked example

A store with 40 kW of demand starts a request in March 2026. It falls under the new regulation (art. 5 paragraph III), stays outside the charge for users under 10 kW, and can rely on the 45 day limit.
A home with a 2019 contract keeps its terms until expiry. At expiry, the note says the network use charge applies, so model the savings without assuming the old terms roll over.

Step by step

Size the system and confirm the demand band (under or over 10 kW).
File with the distributor, on the digital platform once it is live.
Provide a capacity study if the circuit requires it.
Track the 45 day period and keep proof of filing.
Install the meter and sign the interconnection contract.
Claim Ley 57-07 benefits separately if eligible.

Common traps

The text in force is a 146 page scan. The points on 45 days, 100% and 10 kW come from the SIE summary. Read Annex I before signing, since definitions of demand and credit sit there.
The automatic approval depends on the digital platform and the procedures in force. Until the tools are ready, art. 5 paragraph I keeps the old procedures alive.
Press reports name a start date of 1 November 2026 for one distributor to bill the charge. We could not confirm it officially, so treat it as unverified.
Sales to third parties are a different activity. Distributed generation does not replace the concession regime in the page on electricity concessions.

Sources

← Electricity market and concessionsMining concessions →

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