Two 300 MW natural gas / diesel plants proposed for Marshdale and Salt Springs in Pictou County - 600 MW of fossil fuel generation, 20 km apart, paid for by Nova Scotia ratepayers.
Both proposed sites in Pictou County, approximately 20 km apart on the same M&NE Pipeline lateral.
IESO Nova Scotia is procuring two "fast-acting natural gas power generation facilities" in Pictou County, each with a capacity of up to 300 MW. Both were registered for environmental assessment on December 22, 2025, and both received ministerial approval with conditions on February 19, 2026. Construction is scheduled to begin in 2027, with an expected operational life of at least 30 years.
The proponent for both projects is IESO Nova Scotia, a provincial agency created in 2024 to manage electricity procurement. Unlike typical Canadian electricity procurements where private companies propose their own sites, IESO Nova Scotia pre-selected these sites, conducted preliminary studies, and is now running a competitive RFP for a third party to build and operate the plants.
Marshdale site — PID 65245375, near Lorne, Hopewell, and Eureka. Project area: 55.95 ha.
The Marshdale facility is proposed for PID 65245375, near the communities of Lorne, Hopewell, and Eureka in the Municipality of Pictou County. The project would construct and operate a natural gas facility with combustion turbines and associated infrastructure including access roads, a substation, and buildings.
The EARD describes a water injection system for emissions control requiring a peak extraction rate of 175 m³/hour, serviced by 14–19 production wells. The EARD's own groundwater modelling shows that 18–42% of pumping at Marshdale could come from depleting Cameron Brook, a local watercourse.
The environmental assessment received public comments (published in two parts) and was approved with conditions by the Minister on February 19, 2026.
| Category | Detail | Source |
|---|---|---|
| Water — Peak Extraction | 175 m³/hr (175,000 L/hr) | EARD Section 3.3.2.3 |
| Water — Average Use | 23–31 m³/hr at 25% capacity factor | EARD Section 3.3.2.3 |
| Production Wells | 14–19 wells (up to 162 at peak demand) | EARD Table 8.3 |
| Stream Depletion | 18–42% of pumping from Cameron Brook depletion | EARD Section 8.5.4.3 |
| Wastewater Discharge | 50 m³/hr peak, discharged to surface water | EARD Section 3.3.2.3 |
| Diesel Fuel Storage | ~9 million litres (5-day supply at full load) | EARD Section 3.3.2.2 |
| Diesel Consumption | 75,000 L/hr at full capacity; up to 20% of operating hours | EARD Section 3.3.2.2 |
| Stack Height | 30 m, exhaust temperature 452°C | EARD Table 3-5, Appendix B |
| Noise at Nearest Home | 40 dBA (nighttime limit: 40 dBA) | EARD Table 7.18 |
| Construction Jobs | 100–125 short-term; 10–15 permanent | EARD Section 10.2 |
| Wetlands Altered | 3 wetlands totalling 1.75 ha | EARD Section 6 |
| Species at Risk Detected | Canada warbler (Threatened), Eastern wood-pewee (Special Concern), Atlantic salmon, American eel | EARD Tables 10.15, Section 9 |
On February 19, 2026, Minister Timothy Halman approved the Marshdale project. The decision letter contains a single substantive sentence:
“Following a review of the information provided by the Independent Energy System Operator (IESO) Nova Scotia, and all the comments received through the environmental assessment process, I am satisfied that any adverse effects or significant environmental effects of the undertaking can be adequately mitigated through compliance with the attached terms and conditions.”
The approval came with 8 categories of conditions — but read them carefully. These are not environmental limits. They are instructions to go do the actual environmental work: submit a design, write a wildlife plan, do the archaeology survey, form a committee. The substantive environmental questions — how much water can be withdrawn, what emissions are permitted, what noise levels are acceptable, how many hours the plant can operate — are not addressed. Those are deferred entirely to future Industrial Approval and Water Withdrawal Approval applications under Part V of the Environment Act, processes that have not yet begun.
| Condition | Requirement |
|---|---|
| Project Design (4.1) | Provide detailed final design and environmental mitigations before construction |
| Species at Risk (5.1–5.2) | Submit species location data to DNR; submit Wildlife Management Plan to ECC, DNR, and ECCC |
| Archaeology (6.1–6.2) | Stop work on any archaeological find; complete subsurface testing for elevated-potential areas |
| Wetlands (3.7) | Obtain Wetland Alteration Approval before altering any wetlands |
| Community Liaison (7.1) | Form and operate a CLC for the duration of the project |
| Mi’kmaq Engagement (8.1) | Develop and implement a Mi’kmaq Communication Plan |
| Commencement (3.2–3.3) | Begin work within 2 years; notify Department 30 days before starting |
| Annual Reporting (3.4) | Submit concordance table on condition status by January 31 each year |
The environmental assessment did not determine whether these plants can operate safely. It approved a plan to figure that out later. The conditions require IESO to submit a detailed design, a wildlife management plan, archaeological testing, and a Mi’kmaw communication plan — all after approval. The actual environmental limits on water, air, noise, and operations will be set in future Part V approval processes that have not yet begun. The Minister approved the project before the environmental work was done.
The Marshdale EA received 51 public and organizational submissions during the comment period (December 22, 2025 – February 9, 2026): 45 anonymous public comments and 6 organizations — Pictou Landing First Nation, Kwilmu’kw Maw-Klusuaqn (KMK), Sierra Club Canada Foundation, Ecology Action Centre, Canadian Association of Physicians for the Environment, and Margaree Environmental Association. Not a single submission supported the project.
KMK’s 6-page letter directly challenged the province’s claim that the project would not impact Mi’kmaq rights:
“Contrary to the statement in your previous letter that ‘the nature of this project is not likely to lead to appreciable adverse impacts to credibly asserted or established Mi’kmaq Aboriginal or Treaty rights,’ it is the understanding of the KMK that this project has significant potential to impact salmon, moose and black ash, at a minimum. Accordingly, it has the potential to cause appreciable adverse impacts to the Mi’kmaq’s established and asserted fishing, hunting and harvesting rights.” — Kwilmu’kw Maw-Klusuaqn (KMK), Director of Consultation
“Atlantic salmon are of great importance to the Mi’kmaq of Nova Scotia and are considered sacred to our culture and way of life. This species remains a foundational food source across Mi’kma’ki and would historically feed our people year-round. Loss of access to salmon threatens Mi’kmaq food security, self-determination, and rights-based harvesting practices.” — Kwilmu’kw Maw-Klusuaqn (KMK)
“With Pictou Landing being the nearest Mi’kmaw Community and having a dark history of large-scale industrial developments adjacent to their community, such as the Boat Harbor Project, it is imperative that the local Mi’kmaw Communities are adequately informed well in advance of large-scale projects such as this.” — Kwilmu’kw Maw-Klusuaqn (KMK)
“The Office of L’nu Affairs was in error when it failed to identify concerns or conduct an adequate assessment of impacts to rights. … KMK therefore emphasizes that a thorough, good faith consultation process must now be initiated both provincially and federally, consistent with the duty to consult.” — Kwilmu’kw Maw-Klusuaqn (KMK)
“Across multiple issue areas, the assessment exhibits a consistent and material pattern: potential adverse effects are systematically understated, not because evidence demonstrates they are insignificant, but because key analytical steps are deferred, scoped narrowly, or based on assumptions that are neither defined nor tested within the EA record itself.” — Sierra Club Canada Foundation
“We reviewed the Environmental Assessments for the proposed Marshdale and Salt Springs 300MW natural gas power generating facilities and find these assessments to be both inadequate and suspicious. They are inadequate because they fail to properly investigate non-fossil fuel alternatives, and suspicious because they do not establish the need for natural gas power development in the current Nova Scotia context.” — Margaree Environmental Association
“In the Pictou County region Mi’kmaq majority-owned, shovel-ready 150 MW/600–1,200 MWh BESS exists in Trenton. The EAC is concerned that the deployment of these gas plants will undermine this business case for the deployment of these BESS plants.” — Ecology Action Centre
“Groundwater withdrawal from nearby aquifers would reduce the natural cold-water inputs that sustain these refugia. … If this assemblage constitutes ‘low ecological significance,’ it raises serious questions about how ecological value is being defined.” — Anonymous commenter, Stellarton (self-identified marine ecologist)
“Summer 2025 produced a significant drought in our area. The East River flowing through Stellarton was so low that rocks were visible above the water — something I cannot recall seeing in my 39 years living here.” — Anonymous commenter, Stellarton area
“Spending roughly a billion dollars, committing us to burning fossil fuel for 20–30 or more years is fiscally irresponsible. There are cheaper and more environmentally appropriate alternatives.” — Anonymous commenter, Lower Three Fathom Harbour
Salt Springs site — PIDs 00851287, 65049983, 00846311, 65177198, near Limerock and Six Mile Brook. Project area: 72.08 ha.
The Salt Springs facility is proposed across four properties (PIDs 00851287, 65049983, 00846311, 65177198), near the communities of Limerock, Six Mile Brook, and Central West River in the Municipality of Pictou County. Like Marshdale, it would construct and operate a 300 MW natural gas facility with combustion turbines and associated infrastructure.
The Salt Springs site requires 9–12 production wells for water injection, with the same 175 m³/hour peak extraction rate as Marshdale. Both sites would also discharge approximately 50 m³/hour of treated wastewater to surface water.
The Salt Springs assessment received public comments (published in three parts) and was also approved with conditions on February 19, 2026.
| Category | Detail | Source |
|---|---|---|
| Water — Peak Extraction | 175 m³/hr (175,000 L/hr) | EARD Section 3.3.2.3 |
| Water — Average Use | 23–31 m³/hr at 25% capacity factor | EARD Section 3.3.2.3 |
| Production Wells | 9–12 wells (up to 65 at peak demand) | EARD Table 8.3 |
| Wastewater Discharge | 50 m³/hr peak, discharged to surface water | EARD Section 3.3.2.3 |
| Diesel Fuel Storage | ~9 million litres (5-day supply at full load) | EARD Section 3.3.2.2 |
| Diesel Consumption | 75,000 L/hr at full capacity; up to 20% of operating hours | EARD Section 3.3.2.2 |
| Stack Height | 30 m, exhaust temperature 452°C | EARD Section 10.2 |
| Noise at Nearest Home | 41 dBA unmitigated, 40 dBA mitigated (nighttime limit: 40 dBA) | EARD Tables 7.18, 7.19 |
| Construction Jobs | 100–125 short-term; 10–15 permanent | EARD Section 10.2 |
| Wetlands of Special Significance | 11 wetlands identified within project area | EARD Section 8 |
| Black Ash Trees | 52 individual trees (29 occurrences) in project area | EARD Section 10 |
| Species at Risk Detected | Canada warbler (Threatened), Eastern wood-pewee (Special Concern), wood turtle, mainland moose habitat nearby | EARD Sections 9, 10 |
The Salt Springs project was approved on the same day as Marshdale (February 19, 2026) with an identical decision letter containing the same single substantive sentence:
“Following a review of the information provided by the Independent Energy System Operator (IESO) Nova Scotia, and all the comments received through the environmental assessment process, I am satisfied that any adverse effects or significant environmental effects of the undertaking can be adequately mitigated through compliance with the attached terms and conditions.”
The conditions are identical to Marshdale’s — same 8 categories, same language. Same pattern: instructions to do the environmental work after the approval, not before. No limits on water withdrawal, emissions, noise, or operational hours. All deferred to future Part V approvals.
Salt Springs received 78 public and organizational submissions, published in three parts: 72 anonymous public comments and the same 6 organizations. As with Marshdale, not a single submission supported the project. Many commenters are local residents who raised concerns about their wells, the 2025 drought, and the rushed timeline:
“The project has been labeled as the most cost-effective path but to what end? … The environmental review report was released over the Christmas period with requests for commentary by February the 9th 2026. Everything seems to be rushed. The whole process to this point appears to be that the project is a done deal.” — Anonymous couple, Salt Springs
“We are very concerned about the proposed amount of water needed for this project which estimates usage to be equivalent to 750 homes per year. This is over 10 times the current draw in this area. … Should private wells go dry it appears that homeowners will be tasked to prove this project is the root of the problem. We have been here for 40+ years, raised a family and have never had an issue with our well, even with this past year of extreme drought.” — Anonymous couple, Salt Springs (40+ year residents)
“Approving a 300-megawatt industrial power generation facility in this location circumvents the zoning protections that rural residents relied upon when purchasing property and establishing homes. … If provincial approval processes can override municipal zoning restrictions to permit major industrial facilities in residential areas, then no rural community in Nova Scotia possesses meaningful protection against similar impositions.” — Anonymous commenter, within 1 km of site
“I live in Salt Springs, Nova Scotia. My grandmother and her grandmother washed their clothes in Six Mile Brook. Now, I am blessed to walk the same river with my granddaughter. … I really have no concerns, other than our Provincial Government thinks that they can fast track a fossil fuel burning energy plant within a stone throw from my family and neighbours. Really? I am very confused.” — Anonymous resident, Salt Springs
“The project proposes ongoing withdrawals of clean water for operational use at a time when local water systems have already demonstrated significant vulnerability. During the summer and early fall of 2025, severe drought conditions resulted in very low water levels in Six Mile Brook and the West River from June through October.” — Anonymous commenter, Gunn Road area
“Overbuilding of gas generation would be ineffective, inefficient, and environmentally damaging, and costly, especially when there are lower carbon alternatives. The dash to gas risks negative and unnecessary impacts on the environment and on ratepayers.” — Ecology Action Centre
Because these are two identical plants under a single procurement, the combined numbers are what Nova Scotia is actually signing up for.
| Metric | Marshdale | Salt Springs | Combined |
|---|---|---|---|
| Capacity | 300 MW | 300 MW | 600 MW |
| Turbines | 6 | 6 | 12 |
| Project Area | 55.95 ha | 72.08 ha | 128.03 ha |
| Cleared Footprint | 12.55 ha | 12.72 ha | 25.27 ha |
| CO²e / Year | 325,594 t | 325,594 t | 651,188 t |
| Peak Water Extraction | 175 m³/hr | 175 m³/hr | 350 m³/hr |
| Production Wells | 14–19 | 9–12 | 23–31 |
| Wastewater Discharge | 50 m³/hr | 50 m³/hr | 100 m³/hr |
| Diesel Storage | ~9 million L | ~9 million L | ~18 million L |
| Nearest Residence | 833 m | 706 m | — |
| Construction Jobs | 100–125 | 100–125 | 200–250 |
| Permanent Jobs | 10–15 | 10–15 | 20–30 |
No analysis has been published explaining why two sites were chosen over one, or why both are located in Pictou County. The community has not been told why this decision was made.
If the justification is redundancy, the 20 km separation between Marshdale and Salt Springs does not deliver it. Both sites share the same vulnerabilities:
Two sites 20 km apart protect against a localized fire or equipment failure at one plant. They do not protect against the regional events - ice storms, pipeline disruptions, transmission failures - that actually threaten an isolated grid like Nova Scotia's.
Meanwhile, two sites mean the community hosts double the infrastructure and double the environmental footprint. The Maritimes & Northeast Pipeline runs through five counties. Existing generation sites like Trenton or Point Tupper would provide genuine geographic separation. The decision to concentrate both plants in Pictou County was made before any public process began.
The EARDs describe the plants as using "combustion turbines," but the RFP's Functional Specifications leave the door open for either aeroderivative gas turbines (such as the GE LM6000) or reciprocating internal combustion engines (RICE), such as those manufactured by Wärtsilä. The final technology choice will be made by the winning bidder.
The EARDs describe water injection as the method for controlling nitrogen oxide (NOx) emissions. Water is injected into the combustion chamber to lower flame temperatures, reducing NOx formation. This is the oldest method of emissions control for gas turbines, dating to the 1970s.
Water injection drives the massive water demand: 175 m³/hour peak extraction per site, dozens of production wells, and ongoing wastewater discharge. However, the EARDs themselves acknowledge that "alternative Project technology with less water demand" exists.
Two commercial alternatives eliminate nearly all water demand. Dry Low Emissions (DLE) combustion turbines achieve equal or better NOx performance through combustion chamber design, with near-zero water consumption. Reciprocating engines use closed-loop radiator cooling and need less than 5 litres of water per hour. The RFP does not require water injection - the 175 m³/hour figure reflects a design choice in the EARD, not a requirement of the procurement.
Despite being described as power plants, these facilities would generate electricity less than 25% of the time. More than 70% of the time, they would operate as synchronous condensers - the turbine or engine is shut down and disconnected, but the generator keeps spinning, connected to the grid.
A synchronous condenser provides physical grid stability: resistance to frequency changes, the ability to ride through short circuits, and voltage support. These services become critical as coal plants retire and wind and solar - which do not inherently provide them - increase. These are primarily grid stability machines that occasionally generate electricity, not power plants in the traditional sense.
The speed of this procurement has a specific cause, and it is not the 2030 coal phaseout. NS Power was originally developing the first 300 MW itself, targeting 2027. The plan was to build in two stages. In Fall 2024, the Department of Natural Resources transferred the procurement to the newly created IESO Nova Scotia, resetting the clock. The target is now 2029–2030, and all 600 MW must be built at the same time.
The real driver of the timeline is the federal Clean Electricity Regulations. A new gas plant emits 460–550 tonnes of CO2 per gigawatt-hour but faces an emissions limit of 65 t/GWh. It cannot operate under that limit. However, plants that qualify as "planned units" are exempt until the end of 2049.
To qualify, four milestones had to be met by December 31, 2025:
The EARDs were filed on December 15, 2025 - sixteen days before the deadline. This likely explains why IESO Nova Scotia pre-selected the sites rather than letting bidders propose their own. Three of the four milestones are publicly verifiable. The fourth - the $10 million equipment contract - has no public trace.
| Date | Event |
|---|---|
| Fall 2024 | Procurement transferred from NS Power to IESO Nova Scotia |
| December 15, 2025 | EARDs filed for both Marshdale and Salt Springs |
| December 22, 2025 | Both projects registered for environmental assessment |
| December 31, 2025 | Federal "planned unit" qualification deadline |
| February 19, 2026 | Both projects approved with conditions |
| March 10, 2026 | Draft RFP released |
| 2027 | Scheduled construction start |
| 2029–2030 | Target operational date |